Dental appliance, tooth straightening system, dental appliance design method and manufacturing method

Abstract

The present application provides a kind of dental appliance, dental treatment system, dental appliance design method and preparation method, including the first shell body containing maxillary teeth and the second shell body containing mandibular teeth, the position of the first shell body posterior occlusal surface is provided with protrusion part to the opposite jaw direction, the protrusion part is used to induce and adjust the protrusion part of the upper and lower jaw position relationship, the second shell body dental occlusal surface is provided with guide part, the guide part is used to guide the protrusion part to the normal upper and lower jaw position relationship, the protrusion part and the guide part are respectively provided with the contact surface of mutual action to induce and adjust the upper and lower jaw position relationship;The protrusion part is provided with holding part to the opposite jaw occlusal surface, and the holding part is stably contacted with the second shell body;When the first shell body and the second shell body interact, the guide part guides the protrusion part to move, and simultaneously, the protrusion part moves to the predetermined position, so that the holding part is stably contacted with the occlusal surface on the second shell body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and relates to a dental device, a tooth correction system, a dental device design method and a preparation method. BACKGROUND

[0002] Malocclusion refers to a phenomenon of dental malformation caused by congenital genetic factors or acquired environmental factors during the growth and development of children. The acquired environmental factors are, for example, diseases, bad oral habits, replacement tooth disorders, and the like, and can also be factors such as trauma and periodontal disease during the growth and development process. The formation factors and mechanisms of malocclusion are complex, and the occurrence process can be caused by a single factor and a single mechanism, or can be caused by multiple factors or multiple mechanisms.

[0003] According to the Angle classification method, malocclusion is divided into Class I malocclusion (neutral malocclusion), Class II malocclusion (distal malocclusion), and Class III malocclusion (proximal malocclusion). Among them, Class II malocclusion is one of the common malocclusion deformities in oral orthodontics, and the typical manifestations of Class II malocclusion are upper anterior teeth protrusion, anterior teeth deep overbite, deep overbite, open-lip smile, inwardly inclined deep overbite, short lower face, or deep chin-lip groove. For patients with mild to moderate mandibular retrusion, because of insufficient mandibular development, the patients are in the growth and development period, and some patients are even in the growth and development peak period, functional appliances such as Twin-Block, myostimulators, Herbst appliances, and functional regulator type II (FR-II) can stimulate and promote the forward growth of the mandible, and can play a good role in the correction of many Class II malocclusion anterior teeth deep overbite and distal molar relationship.

[0004] Among them, the Twin-Block appliance can effectively utilize all functional correction forces including masticatory force by guiding the mandible to the protrusive position through two convex inclined planes when the patient bites. The reverse Twin-Block appliance guides the mandibular retrusion by guiding the mandible to the retrusive position through two convex inclined planes when the patient bites. The invisible dental appliance is selected by more and more people because of its comfortable and removable wearing and aesthetic appearance, but how to combine the functional correction effect of the Twin-Block appliance with the invisible appliance and achieve the same or better correction effect, or how to improve the structure of the invisible appliance to achieve the same or better correction effect of the Twin-Block appliance, is a problem to be solved.

[0005] Therefore, it is of great significance to study a dental device that adjusts the relationship between the upper and lower jaws with safety, comfort and convenience. SUMMARY

[0006] The present application solves the technical problem of providing a dental appliance, a dental treatment system, a dental appliance design method and a preparation method, which adopts the form of setting a protruding part on the upper jaw shell body and a guiding part on the lower jaw shell body, and the two parts cooperate with each other to adjust the upper and lower jaw position relationship. The dental treatment system comprises at least one set of the dental appliance for adjusting the upper and lower jaw position relationship, and under the action of the dental appliance, not only the upper and lower jaw position relationship is adjusted to be normal, but also the malocclusion teeth can be treated at the same time.

[0007] The present application provides a dental appliance for adjusting the upper and lower jaw position relationship, which comprises a first shell body for accommodating the upper jaw teeth and a second shell body for accommodating the lower jaw teeth, a protruding part for inducing the adjustment of the upper and lower jaw position relationship is provided on the occlusal surface of the posterior teeth region of the first shell body in the direction of the opposite jaw, a guiding part for guiding the protruding part to make the upper and lower jaw position relationship normal is provided on the occlusal surface of the second shell body, the mesial surface of the protruding part and the distal surface of the guiding part are provided with interacting contact surfaces to induce the adjustment of the upper and lower jaw position relationship; a retaining part for stably contacting the second shell body is provided on the occlusal surface of the protruding part in the direction of the opposite jaw; when the first shell body and the second shell body interact, the distal surface of the guiding part guides the mesial surface of the protruding part to move, at the same time, the protruding part moves to a predetermined position to make the retaining part stably contact the occlusal surface of the second shell body.

[0008] As an optional technical solution, the interacting contact surfaces provided on the mesial surface of the protruding part and the distal surface of the guiding part are smooth contact or non-smooth contact.

[0009] As an optional technical solution, the structure of the retaining part is a concave-convex structure which is the same as the anatomical features of the occlusal surface of the posterior teeth region of the second shell body.

[0010] As an optional technical solution, the structure of the retaining part is a concave-convex structure which is formed by extending the anatomical features of the occlusal surface of the posterior teeth region of the first shell body in the direction of the opposite jaw.

[0011] As an optional technical solution, the structure of the retaining part is one of a structure with a sanding surface, a structure with protrusions, a structure with a hollow surface or a structure with a hole surface, or a combination of two or more thereof.

[0012] As an optional technical solution, the rigidity of the protruding part is greater than the rigidity of the region of the first shell body for accommodating the upper jaw teeth, and the rigidity of the guiding part is greater than the rigidity of the region of the second shell body for accommodating the lower jaw teeth.

[0013] As an optional technical solution, the convex part and the first shell body accommodate at least one of the thickness, hardness, material, and layer number characteristics of the upper jaw tooth region; the guide part and the second shell body accommodate at least one of the thickness, hardness, material, and layer number characteristics of the lower jaw tooth region.

[0014] As an optional technical solution, the hardness and / or elastic modulus of the retaining part on the convex part is greater than the hardness and / or elastic modulus of the first shell body accommodating the upper jaw tooth region.

[0015] As an optional technical solution, the second shell body is further provided with a limiting part that cooperates with the guide part to limit the relative movement of the convex part. The mesial direction surface of the limiting part and the distal direction surface of the convex part are provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw position relationship. When the first shell body interacts with the second shell body, the convex part is located between the guide part and the limiting part.

[0016] As an optional technical solution, the mesial direction surface of the limiting part and the distal direction surface of the convex part are provided with interacting contact surfaces that are non-smooth surfaces.

[0017] As an optional technical solution, the non-smooth surface is one of a structure with a frosted surface, a structure with protrusions, a structure with a hollow surface, or a structure with a hole surface, or a combination of two or more thereof.

[0018] As an optional technical solution, the convex part and the limiting part are respectively provided with magnets that induce adjustment of the upper and lower jaw position relationship and have the same polarity.

[0019] As an optional technical solution, the convex part and the guide part are respectively provided with magnets that stabilize the relative jaw position relationship and have opposite polarities, and the limiting part is provided with a magnet with the same polarity as the magnet in the convex part.

[0020] As an optional technical solution, the first shell body is provided with a plurality of convex parts, and the second shell body is provided with a plurality of guide parts that interact with the convex parts. The plurality of convex parts and the plurality of guide parts interact to induce adjustment of the upper and lower jaw position relationship to normal.

[0021] As an optional technical solution, the length of the convex part along the mesial and distal direction of the dentition at least partially covers the length of the posterior tooth region along the mesial and distal direction of the teeth; the length of the guide part along the mesial and distal direction of the dentition at least partially covers the length of the canine along the mesial and distal direction.

[0022] As an optional technical solution, the convex part and / or the guide part is filled with a filling part for strengthening the occlusal strength.

[0023] As an optional technical solution, the convex part and the guide part are respectively provided with magnets with stable relative jaw position relationship and opposite polarity.

[0024] As an optional technical solution, the convex part and the first shell body are integrally formed; and the guide part and the second shell body are integrally formed.

[0025] The application further provides another dental instrument for adjusting the upper and lower jaw position relationship, comprising a first shell body for accommodating the upper jaw teeth and a second shell body for accommodating the lower jaw teeth, characterized in that: a convex part for inducing the adjustment of the upper and lower jaw position relationship is protruded in the direction of the opposite jaw at the position of the occlusal surface of the posterior teeth of the first shell body; a guide part for guiding the convex part to make the upper and lower jaw position relationship normal is arranged at the position of the occlusal surface of the second shell body; the distal direction surface of the convex part and the mesial direction surface of the guide part are provided with interacting contact surfaces to induce the adjustment of the upper and lower jaw position relationship; a retaining part for stably contacting the second shell body is arranged at the position of the occlusal surface of the opposite jaw of the convex part; when the first shell body and the second shell body interact, the mesial direction surface of the guide part guides the movement of the distal direction surface of the convex part, and at the same time, the convex part moves to the predetermined position to make the retaining part stably contact the occlusal surface of the second shell body.

[0026] As an optional technical solution, the interacting contact surfaces arranged at the distal direction of the convex part and the mesial direction of the guide part are smooth contact or non-smooth contact.

[0027] As an optional technical solution, the structure of the retaining part is a concave-convex structure same as the anatomical features of the occlusal surface of the posterior teeth of the second shell body.

[0028] As an optional technical solution, the structure of the retaining part is a concave-convex structure formed by extending the anatomical features of the occlusal surface of the posterior teeth of the first shell body in the direction of the opposite jaw.

[0029] As an optional technical solution, the rigidity of the convex part is greater than the rigidity of the region of the first shell body for accommodating the upper jaw teeth; and the rigidity of the guide part is greater than the rigidity of the region of the second shell body for accommodating the lower jaw teeth.

[0030] As an optional technical solution, at least one of the thickness, hardness, material and layer number of the convex part is different from the region of the first shell body for accommodating the upper jaw teeth; and at least one of the thickness, hardness, material and layer number of the guide part is different from the region of the second shell body for accommodating the lower jaw teeth.

[0031] As an optional technical solution, the hardness and / or elastic modulus of the retaining part on the convex part is greater than the hardness and / or elastic modulus of the region of the first shell body for accommodating the upper jaw teeth.

[0032] As an optional technical solution, the second shell-shaped body is further provided with a limiting portion that cooperates with the guide portion to limit the relative movement of the protruding portion. The distal direction surface of the limiting portion and the mesial direction surface of the protruding portion are provided with interacting contact surfaces to stabilize the adjusted maxillofacial relationship. When the first shell-shaped body interacts with the second shell-shaped body, the protruding portion is located between the guide portion and the limiting portion.

[0033] As an optional technical solution, the distal direction surface of the limiting portion and the mesial direction surface of the protruding portion are provided with interacting contact surfaces that are non-smooth surfaces.

[0034] As an optional technical solution, the non-smooth surface is one of a structure with a frosted surface, a structure with protrusions, a structure with a hollow surface, or a structure with a hole surface, or a combination of two or more thereof.

[0035] As an optional technical solution, the protruding portion and the limiting portion are respectively provided with magnets that induce adjustment of the maxillofacial relationship and have the same polarity.

[0036] As an optional technical solution, the protruding portion and the guide portion are respectively provided with magnets that stabilize the relative maxillofacial relationship and have opposite polarities, and the limiting portion is provided with a magnet that has the same polarity as the magnet in the protruding portion.

[0037] As an optional technical solution, the first shell-shaped body is provided with a plurality of protruding portions, and the second shell-shaped body is provided with a plurality of guide portions that interact with the protruding portions. The plurality of protruding portions and the plurality of guide portions interact to induce adjustment of the maxillofacial relationship to normal.

[0038] As an optional technical solution, the length of the protruding portion along the mesial and distal direction of the dentition at least partially covers the length of the teeth in the posterior dental area in the mesial and distal direction. The length of the guide portion along the mesial and distal direction of the dentition at least partially covers the length of the canine teeth in the mesial and distal direction.

[0039] As an optional technical solution, the protruding portion and / or the guide portion are filled with a filling portion for strengthening the occlusal strength.

[0040] As an optional technical solution, the protruding portion and the guide portion are respectively provided with magnets that stabilize the relative maxillofacial relationship and have opposite polarities.

[0041] As an optional technical solution, the protruding portion and the first shell-shaped body are integrally formed; the guide portion and the second shell-shaped body are integrally formed.

[0042] The present invention also provides a dental correction system, comprising multiple sets of dental instruments for adjusting the relationship between the upper and lower jaws, characterized in that the multiple sets of dental instruments for adjusting the relationship between the upper and lower jaws include at least one set of dental instruments for adjusting the relationship between the upper and lower jaws as described above.

[0043] As a preferred technical solution, the multiple groups of dental instruments for adjusting the relationship between the upper and lower jaws have a geometric shape that allows the teeth to be gradually repositioned from an initial position to a target correction position.

[0044] As an optional technical solution, the protrusion height of the protrusion toward the opposite jaw and the protrusion height of the guide portion toward the opposite jaw provided on different groups of dental instruments for adjusting the upper and lower jaw position relationship gradually decrease during the correction process.

[0045] The present invention also provides a method for designing a dental appliance for adjusting the relationship between upper and lower jaws, comprising:

[0046] Obtaining a first initial dental digital model;

[0047] Designing a raised portion model on the occlusal surface of the posterior tooth region of the first initial dental digital model, specifically including obtaining characteristic information of the raised portion; wherein the characteristic information of the raised portion includes the size and preset position of the raised portion, and the occlusal surface of the raised portion facing the opposing teeth is concavely matched with the occlusal surface of the posterior tooth region of the opposing teeth or is occlusally matched with the occlusal surface of the posterior tooth region of the opposing teeth;

[0048] generating a first dental digital model having a raised portion based on the first initial dental digital model and the raised portion model;

[0049] designing a first shell-shaped dental appliance based on the first digital model of the dental jaw, such that the first shell-shaped dental appliance is in a shell shape having a cavity for accommodating the first tooth row, and a posterior tooth region of the first shell-shaped dental appliance has a raised portion protruding toward the opposing jaw, the raised portion including a mesial surface and a distal surface;

[0050] Obtaining the second initial dental digital model;

[0051] Designing a guide part model on the occlusal surface of the second initial dental digital model specifically includes obtaining characteristic information of the guide part; wherein the characteristic information of the guide part includes the size and preset position of the guide part;

[0052] generating a second dental digital model with a guide part based on the second initial dental digital model and the guide part model;

[0053] designing the second shell-shaped dental instrument based on the second dental arch digital model, so that the second shell-shaped dental instrument is a shell shape with a cavity accommodating a second dentition, and the second shell-shaped dental instrument has a guide portion cooperating with the protruding portion of the first shell-shaped dental instrument, the guide portion comprising a guide portion mesial surface and a guide portion distal surface;

[0054] Wherein, the first shell-shaped dental instrument and the second shell-shaped dental instrument are respectively the first shell-shaped body accommodating maxillary teeth and the second shell-shaped body accommodating mandibular teeth as described above; when the first shell-shaped body and the second shell-shaped body interact, the guide portion guides the movement of the protruding portion, and at the same time, the protruding portion moves to a predetermined position to make the retaining portion stably contact the occlusal surface on the second shell-shaped body.

[0055] As an optional technical solution, the distal direction surface of the guide portion guides the mesial direction surface of the protruding portion to move, or the mesial direction surface of the guide portion guides the distal direction surface of the protruding portion to move.

[0056] As an optional technical solution, in the process of designing the second shell-shaped dental instrument based on the second dental arch digital model, a limiting portion design step is further included, so that the designed dental instrument limits the relative movement of the protruding portion through the limiting portion and the guide portion, wherein the limiting portion comprises a limiting portion mesial surface and a limiting portion distal surface.

[0057] As an optional technical solution, the limiting portion mesial surface and the protruding portion distal surface are provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw position relationship; or the limiting portion distal surface and the protruding portion mesial surface are provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw position relationship.

[0058] The application also provides a preparation method of an adjusting upper and lower jaw position dental instrument, which is based on the above-mentioned design method to prepare the designed dental instrument accordingly, and the preparation method comprises a hot-press forming preparation method or a direct 3D printing method.

[0059] Compared with the prior art, the present application provides a dental instrument for adjusting the position relationship between upper and lower jaws, which comprises a first shell-shaped body for accommodating upper teeth, a second shell-shaped body for accommodating lower teeth, a protruding part provided on the first shell-shaped body, and a guiding part provided on the second shell-shaped body, a mesial surface of the protruding part and a distal surface of the guiding part are provided with interacting contact surfaces to induce adjustment of the position relationship between upper and lower jaws, and a retaining part for stable contact with the second shell-shaped body is provided on the protruding part facing the counter-occlusal surface, when the first shell-shaped body and the second shell-shaped body interact, the distal surface of the guiding part guides the movement of the mesial surface of the protruding part, and at the same time, the protruding part moves to a predetermined position to make the retaining part stably contact with the occlusal surface on the second shell-shaped body. The protruding part and the guiding part provided on the occlusal surface can open the occlusion while inducing adjustment of the position relationship between upper and lower jaws when the first shell-shaped body and the second shell-shaped body interact, and specifically can guide the protrusion of the lower jaw, and has good treatment effect for Angle II cases with a spee curve depth greater than 3 mm.

[0060] The present application also provides a dental instrument for adjusting the position relationship between upper and lower jaws, which comprises a first shell-shaped body for accommodating upper teeth, a second shell-shaped body for accommodating lower teeth, a protruding part provided on the first shell-shaped body, and a guiding part provided on the second shell-shaped body, a mesial surface of the protruding part and a distal surface of the guiding part are provided with interacting contact surfaces to induce adjustment of the position relationship between upper and lower jaws, and a retaining part for stable contact with the second shell-shaped body is provided on the protruding part facing the counter-occlusal surface, when the first shell-shaped body and the second shell-shaped body interact, the distal surface of the guiding part guides the movement of the mesial surface of the protruding part, and at the same time, the protruding part moves to a predetermined position to make the retaining part stably contact with the occlusal surface on the second shell-shaped body. The protruding part and the guiding part provided on the occlusal surface can open the occlusion while inducing adjustment of the position relationship between upper and lower jaws when the first shell-shaped body and the second shell-shaped body interact, and specifically can guide the protrusion of the lower jaw, and has good treatment effect for Angle II cases with a spee curve depth greater than 3 mm.

[0061] The present invention also provides a dental correction system, comprising multiple sets of dental instruments for adjusting the relationship between the upper and lower jaws. The multiple sets of dental instruments for adjusting the relationship between the upper and lower jaws have geometric shapes that gradually reposition the teeth from an initial position to a target correction position. During the entire correction process, a series of multiple sets of dental instruments for adjusting the relationship between the upper and lower jaws simultaneously adjust the relationship between the upper and lower jaws while also correcting the malocclusion, thereby achieving simultaneous correction and correction. The present invention also provides a design method for dental instruments for adjusting the relationship between the upper and lower jaws. A protrusion is designed on a first shell-shaped dental instrument, and a guide portion is provided on a second shell-shaped dental instrument. The two are designed in coordination so that when the first shell-shaped dental instrument and the second shell-shaped dental instrument are engaged, the protrusion and the guide portion contact to adjust the relationship between the upper and lower jaws. The design of the retaining portion makes the relative position of the upper and lower jaws more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 FIG. 1 is a schematic diagram of a dental device for adjusting the relationship between the upper and lower jaws according to a first embodiment of the present invention.

[0063] Figure 2 for Figure 1 Schematic diagram of the relative position of the first shell body and the second shell body of the dental instrument when occluding.

[0064] Figure 3 FIG2 is a schematic diagram of a dental device for adjusting the relationship between the upper and lower jaws according to a second embodiment of the present invention.

[0065] Figure 4 for Figure 3 Schematic diagram of the relative position of the first shell body and the second shell body of the dental instrument when occluding.

[0066] Figure 5 FIG. 1 is a schematic diagram of a dental device for adjusting the relationship between the upper and lower jaws according to a third embodiment of the present invention.

[0067] Figure 6 for Figure 5 Schematic diagram of the relative position of the first shell body and the second shell body of the dental instrument when occluding.

[0068] Figure 7 for Figure 6 Enlarged schematic diagram of the dotted area.

[0069] Figure 8 Schematic diagram of the relative position of the first shell body and the second shell body of the dental device for adjusting the upper and lower jaw position relationship during occlusion according to the fourth embodiment of the present invention.

[0070] Figure 9 Schematic diagram of the relative position of the first shell body and the second shell body of the dental device for adjusting the upper and lower jaw positions during occlusion according to the fifth embodiment of the present invention.

[0071] Figure 10 Schematic diagram of the relative position of the first shell body and the second shell body of the dental device for adjusting the upper and lower jaw position relationship during occlusion according to the sixth embodiment of the present invention.

[0072] Figure 11 for Figure 10 Enlarged schematic diagram of the dotted area.

[0073] Figure 12 The figure is a flow chart of the method for designing a dental appliance for adjusting the relationship between the upper and lower jaws according to the present invention. DETAILED DESCRIPTION

[0074] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs. The words "including" and similar words used in this article mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0075] To address the problems of the prior art, embodiments of the present invention provide a dental device for adjusting the maxillary and mandibular position, effectively guiding mandibular movement and opening the posterior teeth for occlusion. More specifically, the friction structure provided on the occlusal surface of the jaw pad of the dental device for adjusting the maxillary and mandibular position stabilizes the relative position of the maxillary and mandibular during occlusion, constraining the mandibular position to a protruding position while maintaining a relatively stable occlusal relationship. The jaw pad corresponds to the raised portion described below for inducing the adjustment of the maxillary and mandibular position. The "posterior region" is defined according to the tooth classification in "Introduction to Stomatology," 2nd edition, pages 36-38, published by Peking University Medical Press. It includes premolars and molars, teeth 4-8 indicated by the FDI notation, and teeth 1-3 indicated by the FDI notation in the anterior region. The mesial and distal surfaces are the two surfaces where the crown of a tooth adjoins the adjacent tooth, collectively referred to as the proximal surfaces. The surface closer to the facial midline is called the mesial surface, and the surface farther from the facial midline is called the distal surface. The direction closer to the facial midline is the mesial direction, and the direction away from the facial midline is the distal direction.

[0076] Figure 1 A schematic diagram of a dental device for adjusting the relationship between the upper and lower jaws according to a first embodiment of the present invention; Figure 2 for Figure 1Fig. 1 is a schematic view of the mutual positional relationship of the first shell body and the second shell body of the dental appliance in occlusion.

[0077] Referring to Figure 1 With Figure 2 The dental appliance 10 for adjusting the maxillomandibular relationship comprises a first shell body 1 for accommodating the upper teeth and a second shell body 2 for accommodating the lower teeth, and a protruding portion 3 for inducing the adjustment of the maxillomandibular relationship is provided on the posterior occlusal surface of the first shell body 1 in the direction of the opposite jaw; a guide portion 4 is provided on the occlusal surface of the second shell body 2, and the guide portion 4 is used to guide the protruding portion 3 to induce the adjustment of the maxillomandibular relationship; a retaining portion 32 is provided on the protruding portion 3 in the direction of the opposite jaw, and the retaining portion 32 is used to stably contact the second shell body 2; when the first shell body 1 and the second shell body 2 interact with each other, the distal surface 41 of the guide portion 4 guides the mesial surface 31 of the protruding portion 3 to move, and at the same time, the protruding portion 3 moves to the predetermined position so that the retaining portion 32 stably contacts the occlusal surface of the second shell body 2.

[0078] In a preferred embodiment, the interaction contact surfaces provided on the mesial surface 31 of the protruding portion 3 and the distal surface 41 of the guide portion 4 are smooth contact. When the patient wears the dental appliance 10 for adjusting the maxillomandibular relationship and performs occlusion, the protruding portion 3 can be induced to move to the predetermined position through the interaction of the smooth contact. The mesial surface 31 and the distal surface 41 are, for example, smooth planes, smooth curved surfaces or smooth inclined surfaces, and the smooth planes or curved surfaces or inclined surfaces interact and contact to form the smooth contact.

[0079] In a preferred embodiment, the interaction contact surfaces provided on the mesial surface 31 of the protruding portion 3 and the distal surface 41 of the guide portion 4 are non-smooth contact, and the non-smooth contact surfaces are provided with friction structures, concave-convex matching structures, surface texture structures and the like. When the patient wears the dental appliance 10 for adjusting the maxillomandibular relationship and performs occlusion, the protruding portion 3 can be induced to move to the predetermined position without relative movement through the interaction of the non-smooth contact. The mesial surface 31 of the protruding portion 3 and the distal surface 41 of the guide portion 4 are, for example, non-smooth planes, non-smooth curved surfaces or non-smooth inclined surfaces, and the non-smooth planes or curved surfaces or inclined surfaces interact and contact to form the non-smooth contact.

[0080] In a preferred embodiment, the protruding part 3 is provided with a structure of retaining part 32 on the facing occlusal surface of the opposite jaw, which is the same as the concave-convex structure of the posterior tooth area occlusal surface of the second shell body 2. When the first shell body 1 interacts with the second shell body 2, the concave-convex structure of the retaining part 32 surface of the protruding part 3 is the same as the posterior tooth area occlusal surface feature of the second shell body 2, so that when the retaining part 32 contacts the posterior tooth area of the second shell body 2, the protruding direction of the concave-convex structure is the same, and the two are combined more tightly. Alternatively, the protruding part 3 is provided with a structure of retaining part 32 on the facing occlusal surface of the opposite jaw, which is the same as the concave-convex structure of the posterior tooth area occlusal surface of the first shell body 1 extending in the opposite direction. When the first shell body 1 interacts with the second shell body 2, the concave-convex structure of the retaining part 32 surface of the protruding part 3 is the same as the posterior tooth area occlusal surface feature of the first shell body 1, so that when the retaining part 32 contacts the posterior tooth area of the second shell body 2, the protruding direction of the concave-convex structure is not the same, that is, the concave-convex structure extending in the opposite direction is combined more tightly with the posterior tooth area of the second shell body 2 to form a sharp and concave occlusal concave-convex structure. The occlusal surface feature refers to the concave-convex structure composed of tooth cusps and fossa grooves on the occlusal surface of the teeth.

[0081] In a preferred embodiment, the structure of the retaining part 32 can also be one of a structure with a sanding surface, a structure with protrusions, a structure with a hollow surface, or a combination of two or more of the structures. By adding various structures that can increase friction to the retaining part 32, when the upper and lower jaws are occluded, it helps to stabilize the contact between the retaining part 32 and the occlusal surface of the second shell body 2, preventing the correction error caused by the relative movement of the protruding part 3 and the guide part 4.

[0082] In a preferred embodiment, the rigidity of the protruding part 3 is greater than the rigidity of the first shell body 1 accommodating the upper jaw teeth area; the rigidity of the guide part 4 is greater than the rigidity of the second shell body 2 accommodating the lower jaw teeth area. In addition, at least one of the thickness, hardness, material, and layer characteristics of the protruding part 3 and the first shell body 1 accommodating the upper jaw teeth area is different; at least one of the thickness, hardness, material, and layer characteristics of the guide part 4 and the second shell body 2 accommodating the lower jaw teeth area is different. Since the protruding part 3 and the guide part 4 are protruding cavities, when they interact with each other, they are prone to deformation, affecting the correction effect, and increasing the rigidity of the protruding part 3 and the guide part 4 can effectively prevent deformation when they interact with each other.

[0083] In addition, the hardness and / or elastic modulus of the retaining portion 32 on the protruding portion 3 is greater than the hardness and / or elastic modulus of the first shell body 1 accommodating the upper jaw tooth region, since the protruding portion 3 is arranged on the occlusal surface of the first shell body 1 and the retaining portion 32 is in contact with the second shell body 2, under the action of the occlusal force, deformation and damage are prone to occur, and increasing the hardness and / or elastic modulus of the retaining portion 32 can effectively prevent the occurrence of the above phenomenon.

[0084] In the present application, by adjusting the physical parameters of the protruding portion 3 and the retaining portion 32, the service life of the protruding portion 3 and the retaining portion 32 is prolonged, and the wear is reduced.

[0085] In a preferred embodiment, the thickness of the first shell body 1 and / or the thickness of the second shell body 2 is 0.1mm-2.0mm.

[0086] In a preferred embodiment, a plurality of protruding portions 3 are arranged on the first shell body 1, a plurality of guide portions 4 are arranged on the second shell body 2, the plurality of guide portions 4 correspond to the plurality of protruding portions 3 one by one, and the plurality of protruding portions 3 and the plurality of guide portions 4 interact to induce the adjustment of the upper and lower jaw position relationship to be normal. In the present embodiment, the number of protruding portions 3 is 2, the number of guide portions 4 is 2, and the two protruding portions 3 are arranged in the left posterior tooth region and the right posterior tooth region of the first shell body 1 respectively, and the two guide portions 4 are arranged in the left posterior tooth region and the right posterior tooth region of the second shell body 2 respectively. It should be noted that when the number of protruding portions 3 and guide portions 4 is respectively multiple, the plurality of protruding portions 3 need to be distributed on the left tooth region and the right tooth region of the first shell body 1 at the same time, and the plurality of guide portions 4 need to be distributed on the left tooth region and the posterior tooth region of the second shell body 2 at the same time.

[0087] The plurality of protruding portions 3 and the plurality of guide portions 4 interact to induce the adjustment of the upper and lower jaw position relationship to be normal, the plurality of protruding portions 3 and the plurality of guide portions 4 interact, the force is stronger, and the first shell body 1 and the second shell body 2 better play the role of adjusting the upper and lower jaw position relationship to be normal. Specifically, as the first shell body 1 is provided with two protruding portions 3 on the left and right buccal sides respectively, and the second shell body 2 is provided with two guide portions 4 on the left and right buccal sides respectively, taking the left side as an example, the first shell body 1 is provided with a front protruding portion and a rear protruding portion on the left side, and the second shell body 2 is provided with a front guide portion and a rear guide portion on the left side, at this time, the front protruding portion is arranged between the front limiting portion and the rear limiting portion, the front protruding portion can be in contact with the rear limiting portion, or can not be in contact, when not in contact, the distal surface of the front protruding portion is not in contact with the mesial surface of the rear limiting portion, and there is a certain distance between them; when in contact, the distal surface of the front protruding portion is in contact with the mesial surface of the rear limiting portion, and there is no distance between them.

[0088] In other embodiments, the occlusal surfaces of the posterior teeth regions of the first shell body 1 on both sides are respectively provided with a plurality of protrusions 3 (not shown), and the occlusal surfaces of the second shell body 2 on both sides are respectively provided with a plurality of guides 4 (not shown). The plurality of protrusions 3 and the plurality of guides 4 interact to induce the upper and lower jaw positions to tend to be normal. For example, in the present embodiment, two protrusions 3 are provided on each side of the upper jaw, and three guides 4 are provided on each side of the lower jaw. Alternatively, in the present embodiment, two protrusions 3 are provided on the left side and three protrusions 3 are provided on the right side, and two guides 4 are provided on the left side and three guides 4 are provided on the right side.

[0089] In a preferred embodiment, the length of the protrusions 3 along the mesial-distal direction of the dentition at least partially covers the length of the teeth in the mesial-distal direction of the posterior teeth region. For example, the length of the protrusions 3 along the mesial-distal direction of the dentition at least covers the length of one tooth in the mesial-distal direction of the posterior teeth region. The length of the guides 4 along the mesial-distal direction of the dentition at least partially covers the length of the canine teeth in the mesial-distal direction. In this embodiment, the protrusions 3 and the guides 4 not only interact with the guides 4 to adjust the upper and lower jaw positions, but also make the patient wear more comfortable.

[0090] In a preferred embodiment, the protrusions 3 and / or the guides 4 are filled with a filling portion for strengthening the occlusal strength. The filling portion is, for example, a high-molecular resin filled in the protrusions 3 and / or the guides 4. The filling portion can fill the hollow part of the protrusions 3 and the guides 4. By providing the filling portion, the deformation of the protrusions 3 and the guides 4 when occluded can be prevented or reduced, and the effect of affecting the adjustment of the upper and lower jaw positions can be prevented.

[0091] In a preferred embodiment, the protrusions 3 and the guides 4 are respectively provided with magnets with opposite polarities to stabilize the relative jaw positions. After the upper and lower jaws are occluded, the protrusions 3 move to the predetermined position, and the protrusions 3 and the guides 4 are magnetically adsorbed by the magnetic attraction between the magnets with opposite polarities, thereby helping to stabilize the relative positions of the upper and lower jaws.

[0092] In a preferred embodiment, the protrusions 3 and the first shell body 1 are integrally formed, and the guides 4 and the second shell body 2 are integrally formed. The protrusions 3 and the first shell body 1 are integrally formed by vacuum adsorption or directly 3D printed. The guides 4 and the second shell body 2 are integrally formed by vacuum adsorption or directly 3D printed. In addition, the protrusions 3 and the cavity of the first shell body 1 for accommodating the upper teeth are in communication with each other, and the guides 4 and the cavity of the second shell body 2 for accommodating the lower teeth are in communication with each other. In other words, the protrusions 3 and the guides 4 are essentially hollow structures.

[0093] Figure 3Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Figure 4 Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Figure 3 Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Figure 3 Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Figure 4 Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Figure 1 Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Figure 2 Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application;

[0094] Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Figure 3 Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Figure 4 Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application;

[0095] Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application;

[0096] Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Figure 5 Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Figure 6 Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Figure 7 Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application; Fig. 2 is a schematic view of the dental appliance for adjusting the relationship between the upper and lower jaw in the second embodiment of the present application;

[0097] The contact surface of the mesial direction surface 31 of the protruding part 3 and the distal direction surface 41 of the guiding part 4 is a smooth surface, and the contact surface of the mesial direction surface 51 of the limiting part 5 and the distal direction surface 33 of the protruding part 3 is a non-smooth surface. That is, the guiding part 4 induces the protruding part 3 to the occlusion position, and the limiting part 5 increases the friction between the protruding part 3, thereby preventing the protruding part 3 from sliding out of the occlusion position. The guiding part 4 and the limiting part 5 cooperatively act on the protruding part 3, thereby making the occlusion relationship more stable.

[0098] In a preferred embodiment, the protruding part 3 and the limiting part 5 are respectively provided with magnets with the same polarity, which are used to induce the adjustment of the upper and lower jaw position relationship. When the first shell-shaped body 1 and the second shell-shaped body 2 interact with each other, the magnets with the same polarity in the protruding part 3 and the limiting part 5 can push the protruding part 3 to move in the mesial direction or make the protruding part 3 have a tendency to move in the mesial direction, thereby increasing the effect of guiding the lower jaw to move forward by the first shell-shaped body 1 and the second shell-shaped body 2. The magnets can be fixedly bonded with the protruding part 3 or fixedly connected with the protruding part 3. The magnets can be arranged on the interacting surfaces of the protruding part 3 or the limiting part 5, or filled in the protruding part 3 and the limiting part 5.

[0099] In another preferred embodiment, the protruding part 3 and the guiding part 4 are respectively provided with magnets with opposite polarities, which are used to stabilize the relative jaw position relationship, and the limiting part 5 is provided with a magnet with the same polarity as that in the protruding part 3. When the first shell-shaped body 1 and the second shell-shaped body 2 interact with each other, the magnets with opposite polarities in the protruding part 3 and the guiding part 4 can guide the first shell-shaped body 1 and the second shell-shaped body 2 to the appropriate position, and the magnets with the same polarity in the protruding part 3 and the limiting part 5 can push the protruding part 3 to move in the mesial direction or make the protruding part 3 have a tendency to move in the mesial direction, thereby increasing the effect of guiding the lower jaw to move forward by the first shell-shaped body 1 and the second shell-shaped body 2.

[0100] As described above, the dental appliances 10, 20 and 30 provided in the first to third embodiments of the present application are mainly applied to Angle II cases, and can open the posterior occlusion and guide the lower jaw to move forward.

[0101] In addition, the present application also provides another dental appliance 40, 50 and 60 (see Figures 8 to 11 ) for adjusting the upper and lower jaw position relationship, which is mainly applied to Angle III cases, and can open the posterior occlusion and guide the lower jaw to move backward.

[0102] Figure 8 FIG. 4 is a partial schematic view of the relative position relationship between the first shell-shaped body and the second shell-shaped body of the dental appliance for adjusting the upper and lower jaw position relationship in the fourth embodiment of the present application when they are in occlusion. Figure 8 In the fourth embodiment of the present application, the protruding part 3 and the limiting part 5 are respectively provided with magnets with the same polarity, which are used to induce the adjustment of the upper and lower jaw position relationship. When the first shell-shaped body 1 and the second shell-shaped body 2 interact with each other, the magnets with the same polarity in the protruding part 3 and the limiting part 5 can push the protruding part 3 to move in the mesial direction or make the protruding part 3 have a tendency to move in the mesial direction, thereby increasing the effect of guiding the lower jaw to move forward by the first shell-shaped body 1 and the second shell-shaped body 2. Figure 1 and Figure 2The same reference numbers represent the same elements having similar functions, and the related descriptions in the first embodiment of the present application can be referred to, and will not be described again.

[0103] With reference to Figure 8 The dental appliance 40 for adjusting the relationship between the upper and lower jaws comprises a first shell-shaped body 1 for accommodating the upper teeth and a second shell-shaped body 2 for accommodating the lower teeth, the first shell-shaped body 1 is provided with a protruding portion 6 for inducing the adjustment of the relationship between the upper and lower jaws at the position of the occlusal surface of the posterior teeth, the second shell-shaped body 2 is provided with a guide portion 7 at the position of the occlusal surface of the teeth, the guide portion 7 guides the protruding portion 6 to make the relationship between the upper and lower jaws normal; the distal direction surface 61 of the protruding portion 6 and the mesial direction surface 71 of the guide portion 7 are provided with interacting contact surfaces to induce the adjustment of the relationship between the upper and lower jaws; the protruding portion 6 is provided with a retaining portion 62 for stable contact with the second shell-shaped body at the position facing the occlusal surface; when the first shell-shaped body 1 and the second shell-shaped body 2 interact, the mesial direction surface 71 of the guide portion 7 guides the distal direction surface 61 of the protruding portion 6 to move, at the same time, the protruding portion 6 moves to the predetermined position to make the retaining portion 62 stably contact with the occlusal surface of the second shell-shaped body 2.

[0104] In a preferred embodiment, the interacting contact surfaces provided on the distal direction surface 61 of the protruding portion 6 and the mesial direction surface 71 of the guide portion 7 are smooth contact. When the patient wears the dental appliance 40 for adjusting the relationship between the upper and lower jaws and performs occlusion, the protruding portion 6 can be induced to move to the predetermined position through the interaction of the smooth contact. The distal direction surface 61 of the protruding portion 6 and the mesial direction surface 71 of the guide portion 7 are, for example, smooth planes, smooth curved surfaces or smooth inclined surfaces, and the smooth planes or curved surfaces or inclined surfaces interact and contact to form the smooth contact.

[0105] In a preferred embodiment, the interacting contact surfaces provided on the distal direction surface 61 of the protruding portion 6 and the mesial direction surface 71 of the guide portion 7 are non-smooth contact, and the non-smooth contact surfaces are provided with friction structures, concave-convex matching structures, surface texture structures, etc. When the patient wears the dental appliance 40 for adjusting the relationship between the upper and lower jaws and performs occlusion, the protruding portion 6 can be induced to move to the predetermined position without relative movement through the interaction of the non-smooth contact. The distal direction surface 61 of the protruding portion 6 and the mesial direction surface 71 of the guide portion 7 are, for example, non-smooth planes, non-smooth curved surfaces or non-smooth inclined surfaces, and the non-smooth planes or curved surfaces or inclined surfaces interact and contact to form the non-smooth contact.

[0106] In a preferred embodiment, the protruding part 6 is provided with a structure of retaining part 62 on the facing occlusal surface, which is the same as the concave-convex structure of the posterior tooth area occlusal surface of the second shell body 2. When the first shell body 1 interacts with the second shell body 2, the concave-convex structure of the retaining part 62 surface of the protruding part 6 is the same as the posterior tooth area occlusal surface of the second shell body 2, so that when the retaining part 62 contacts the posterior tooth area of the second shell body 2, the protruding direction of the concave-convex structure is the same, and the two are combined more tightly. Alternatively, the protruding part 6 is provided with a structure of retaining part 62 on the facing occlusal surface, which is the same as the concave-convex structure of the posterior tooth area occlusal surface of the first shell body 1 extending in the direction of the opposite jaw. When the first shell body 1 interacts with the second shell body 2, the concave-convex structure of the retaining part 62 surface of the protruding part 6 is the same as the posterior tooth area occlusal surface of the first shell body 1, so that when the retaining part 62 contacts the posterior tooth area of the second shell body 2, the protruding direction of the concave-convex structure is not the same, i.e. the concave-convex structure extending in the direction of the opposite jaw is combined more tightly with the posterior tooth area of the second shell body 2 to form a stable occlusal concave-convex structure. The occlusal surface features refer to the concave-convex structure of the tooth cusps and fossa on the occlusal surface of the teeth.

[0107] In a preferred embodiment, the structure of the retaining part 62 can also be one of a structure with a frosted surface, a structure with protrusions, a structure with a hollow surface, or a combination of two or more of the above structures. By adding various structures that can increase friction to the retaining part 62, when the upper and lower jaws are occluded, it helps to stabilize the contact between the retaining part 62 and the occlusal surface of the second shell body 2, preventing the movement of the protruding part and the guide part from causing treatment errors.

[0108] In a preferred embodiment, the rigidity of the protruding part 6 is greater than the rigidity of the first shell body 1 accommodating the upper jaw teeth area; the rigidity of the guide part 7 is greater than the rigidity of the second shell body 2 accommodating the lower jaw teeth area. In addition, at least one of the thickness, hardness, material, and number of layers of the protruding part 6 and the first shell body 1 accommodating the upper jaw teeth area is different; at least one of the thickness, hardness, material, and number of layers of the guide part 7 and the second shell body 2 accommodating the lower jaw teeth area is different. Since the protruding part 6 and the guide part 7 are protruding cavities, when they interact with each other, they are prone to deformation, affecting the treatment effect, and increasing the rigidity of the protruding part 6 and the guide part 7 can effectively prevent deformation when they interact with each other.

[0109] In addition, the hardness and / or elastic modulus of the retaining portion 62 on the protruding portion 6 is greater than the hardness and / or elastic modulus of the first shell body 1 accommodating the upper jaw tooth region. Since the protruding portion 6 is arranged on the occlusal surface of the first shell body 1 and the retaining portion 62 is in contact with the second shell body 2, under the action of the occlusal force, deformation and damage are prone to occur. Increasing the hardness and / or elastic modulus of the retaining portion 62 can effectively prevent the above phenomenon from occurring.

[0110] In the present application, by adjusting the physical parameters of the protruding portion 6 and the retaining portion 62, the service life of the protruding portion 6 and the retaining portion 62 is prolonged, and the wear is reduced.

[0111] In a preferred embodiment, a plurality of protruding portions 6 are arranged on the first shell body 1, and a plurality of guide portions 7 are arranged on the second shell body 2. The plurality of guide portions 7 correspond to the plurality of protruding portions 6 one by one, and the plurality of protruding portions 6 and the plurality of guide portions 7 interact to induce the adjustment of the upper and lower jaw position relationship to be normal. In this embodiment, the number of protruding portions 6 is 2, and the number of guide portions 7 is 2. The two protruding portions 6 are arranged in the left posterior tooth region and the right posterior tooth region of the first shell body 1, respectively, and the two guide portions 7 are arranged in the left posterior tooth region and the right posterior tooth region of the second shell body 2, respectively. It should be noted that when the number of protruding portions 6 and guide portions 7 is a plurality, respectively, the plurality of protruding portions 6 need to be distributed in the left tooth region and the right tooth region of the first shell body 1 at the same time, and the plurality of guide portions 7 need to be distributed in the left tooth region and the posterior tooth region of the second shell body 2 at the same time.

[0112] The plurality of protruding portions 6 and the plurality of guide portions 7 interact to induce the adjustment of the upper and lower jaw position relationship to be normal. The plurality of protruding portions 6 and the plurality of guide portions 7 interact, and the force is stronger, so that the first shell body 1 and the second shell body 2 can better adjust the upper and lower jaw position relationship to be normal. Specifically, as the first shell body 1 is provided with two protruding portions 6 on the left and right buccal sides, and the second shell body 2 is provided with two guide portions 7 on the left and right buccal sides, taking the left side as an example, the first shell body 1 is provided with a front protruding portion and a rear protruding portion on the left side, and the second shell body 2 is provided with a front guide portion and a rear guide portion on the left side. At this time, the front protruding portion is arranged between the front limiting portion and the rear limiting portion, and the front protruding portion can be in contact with the front limiting portion or not in contact with the front limiting portion. When not in contact, the mesial surface of the front protruding portion is not in contact with the distal surface of the front limiting portion, and there is a certain distance between them; when in contact, the mesial surface of the front protruding portion is in contact with the distal surface of the front limiting portion, and there is no distance between them.

[0113] In other embodiments, the occlusal surfaces of the posterior teeth regions of the first shell body 1 on both sides are respectively provided with a plurality of protrusions 6 (not shown), and the occlusal surfaces of the second shell body 2 on both sides are respectively provided with a plurality of guides 7 (not shown). The plurality of protrusions 6 and the plurality of guides 7 interact to induce the upper and lower jaw positions to tend to be normal. For example, in the present embodiment, two protrusions 6 are provided on the left side of the upper jaw and three protrusions 6 are provided on the right side of the upper jaw, and three guides 7 are provided on the left side of the lower jaw and two guides 7 are provided on the right side of the lower jaw.

[0114] In a preferred embodiment, the length of the protrusions 6 along the mesial-distal direction of the dentition at least partially covers the length of the teeth in the posterior teeth region along the mesial-distal direction. For example, the length of the protrusions 6 along the mesial-distal direction of the dentition at least covers the length of one tooth in the posterior teeth region along the mesial-distal direction. The length of the guides 7 along the mesial-distal direction of the dentition at least partially covers the length of the canine teeth along the mesial-distal direction. The protrusions 6 and the guides 7 formed in this way not only interact with the guides 7 to adjust the upper and lower jaw positions, but also make the patient wear more comfortable.

[0115] In a preferred embodiment, the protrusions 6 and / or the guides 7 are filled with a filling portion for strengthening the occlusal strength. The filling portion is, for example, a high-molecular resin filled in the protrusions 6 and / or the guides 7. The filling portion can fill the hollow part of the protrusions 6 and the guides 7. By providing the filling portion, the deformation of the protrusions 6 and the guides 7 when occluded can be prevented or the degree of deformation of the protrusions 6 and the guides 7 can be reduced, thereby preventing the effect of adjusting the upper and lower jaw positions.

[0116] In a preferred embodiment, the protrusions 6 and the guides 7 are respectively provided with magnets with opposite polarities to stabilize the relative jaw positions. After the upper and lower jaws are occluded, the protrusions 6 move to the predetermined positions, and the protrusions 6 and the guides 7 are magnetically adsorbed by the magnetic attraction between the magnets with opposite polarities, thereby helping to stabilize the relative positions of the upper and lower jaws.

[0117] In a preferred embodiment, the protrusions 6 and the first shell body 1 are integrally formed, and the guides 7 and the second shell body 2 are integrally formed. The protrusions 6 and the first shell body 1 are integrally formed by vacuum adsorption or directly 3D printed. The guides 7 and the second shell body 2 are integrally formed by vacuum adsorption or directly 3D printed. In addition, the protrusions 6 and the cavity in the first shell body 1 for accommodating the upper teeth are in communication with each other, and the cavity in the second shell body 2 for accommodating the lower teeth is in communication with each other. In other words, the protrusions 6 and the guides 7 are essentially hollow structures.

[0118] Figure 9Fig. 5 is a partial view of the first shell body and the second shell body of the dental appliance in the fifth embodiment in occlusion, wherein Figure 9 Fig. 6 is a partial view of the first shell body and the second shell body of the dental appliance in the fifth embodiment in occlusion, wherein Figure 8 The same reference numbers represent the same elements having similar functions, and the related descriptions in the fourth embodiment of the present application can be referred to.

[0119] Fig. 7 is a partial view of the first shell body and the second shell body of the dental appliance in the fifth embodiment in occlusion, wherein Figure 9 The dental appliance 50 for adjusting the maxillomandibular relationship in the fifth embodiment is different from the dental appliance 40 for adjusting the maxillomandibular relationship in the fourth embodiment in that the second shell body 2 is further provided with a limiting portion 8 that cooperates with the guide portion 7 to limit the relative movement of the protruding portion 6. The distal direction surface 81 of the limiting portion 8 and the mesial direction surface 63 of the protruding portion 6 are provided with contact surfaces that interact with each other to stabilize the adjusted maxillomandibular relationship. When the first shell body 1 and the second shell body 2 interact with each other, the protruding portion 6 is located between the guide portion 7 and the limiting portion 8.

[0120] In a preferred embodiment, the contact surfaces between the distal direction surface 81 of the limiting portion 8 and the mesial direction surface 63 of the protruding portion 6 are non-smooth surfaces. The "non-smooth surface" is one of the following structures or a combination of two or more of the following structures: a structure with a sanding surface, a structure with protrusions, a structure with a hollow surface, or a structure with a hole surface.

[0121] Fig. 8 is a partial view of the first shell body and the second shell body of the dental appliance in the fifth embodiment in occlusion, wherein Figure 10 Fig. 9 is a partial view of the first shell body and the second shell body of the dental appliance in the fifth embodiment in occlusion, wherein Figure 11 In the dental appliance 60 for adjusting the maxillomandibular relationship in the sixth embodiment of the present application, the distal direction surface 81 of the limiting portion 8 is provided with a recess structure 82, and the mesial direction surface 63 of the protruding portion 6 is provided with a protruding structure 64. When the upper and lower jaws are in occlusion, the protruding structure 64 is clamped into the recess structure 82, and the distal direction surface 81 of the limiting portion 8 limits the mesial direction surface 63 of the protruding portion 6. In actual use, the guide portion 7 guides the protruding portion 6 to stably contact the retaining portion 62 with the occlusal surface of the posterior region of the second shell body, and the recess structure 82 stably limits the protruding structure 64 on the protruding portion 6, thereby more stably maintaining the relative positional relationship between the protruding portion 6 and the guide portion 7. One protruding portion 6 is provided on the first shell body 1, and one guide portion 7 and one limiting portion 8 are provided on the second shell body 2. After the upper and lower jaws are in occlusion, the guide portion 7 and the limiting portion 8 jointly clamp the protruding portion 6 based on the protruding portion 6 moving to the predetermined position to stably contact the retaining portion 62 with the occlusal surface of the second shell body 2, so that the occlusal relationship is more stable.

[0122] The contact surface of the distal direction surface 61 of the protruding portion 6 and the proximal direction surface 71 of the guiding portion 7 is a smooth surface, and the contact surface of the distal direction surface 81 of the limiting portion 8 and the proximal direction surface 63 of the protruding portion 6 is a non-smooth surface, that is, the guiding portion 7 induces the protruding portion 6 to the occlusion position, and the limiting portion 8 increases the friction between the protruding portion 6 to prevent the protruding portion 6 from sliding out of the occlusion position, and the guiding portion 7 and the limiting portion 8 cooperatively act on the protruding portion 6 to make the occlusion relationship more stable.

[0123] In a preferred embodiment, the protruding portion 6 and the limiting portion 8 are respectively provided with magnets with the same polarity to induce the adjustment of the upper and lower jaw position relationship. When the first shell-shaped body 1 and the second shell-shaped body 2 interact, the magnets with the same polarity in the protruding portion 6 and the limiting portion 8 can push the protruding portion 6 to move in the proximal direction or make the protruding portion 6 have a tendency to move in the proximal direction, thereby increasing the effect of the first shell-shaped body 1 and the second shell-shaped body 2 on guiding the lower jaw forward. The magnets can be fixedly bonded with the protruding portion 6 or fixedly connected with the protruding portion 6, and the magnets can be arranged on the interacting surfaces of the protruding portion 6 or the limiting portion 8, or filled in the protruding portion 6 and the limiting portion 8.

[0124] In another preferred embodiment, the protruding portion 6 and the guiding portion 7 are respectively provided with magnets with opposite polarities to stabilize the relative jaw position relationship, and the limiting portion 8 is provided with a magnet with the same polarity as the protruding portion 6. When the first shell-shaped body 1 and the second shell-shaped body 2 interact, the magnets with opposite polarities in the protruding portion 6 and the guiding portion 7 can guide the first shell-shaped body 1 and the second shell-shaped body 2 to the appropriate position, and the magnets with the same polarity in the protruding portion 6 and the limiting portion 8 can push the protruding portion 6 to move in the proximal direction or make the protruding portion 6 have a tendency to move in the proximal direction, thereby increasing the effect of the first shell-shaped body 1 and the second shell-shaped body 2 on guiding the lower jaw backward.

[0125] The present application also provides a dental correction system, which comprises a plurality of dental appliances for adjusting the upper and lower jaw position relationship, wherein the plurality of dental appliances for adjusting the upper and lower jaw position relationship comprises at least one set of dental appliances 10, 20, 30, 40, 50 and / or 60 for adjusting the upper and lower jaw position relationship as described above, and the plurality of dental appliances 10, 20, 30, 40, 50 and / or 60 have a geometry for gradually repositioning the teeth from an initial position to a target correction position.

[0126] In a preferred embodiment, the protruding height of the protruding portion 3 and the protruding height of the guiding portion 4 in the direction of the opposite jaw gradually decrease during the correction process. Or the protruding height of the protruding portion 6 and the protruding height of the guiding portion 7 in the direction of the opposite jaw gradually decrease during the correction process.

[0127] Specifically, taking the orthodontic treatment of teeth through three stages as an example, different dental appliances are used for orthodontic treatment in each stage, such as the dental appliance used in the second stage is the dental appliance used after the first stage, and the dental appliance used in the third stage is the dental appliance used after the second stage. The dental appliances used in the three stages differ in that the protrusion height of the protrusion 3 or 6 provided on the dental appliance used in the second stage in the direction of the opposite jaw is less than the protrusion height of the protrusion 3 or 6 provided on the dental appliance used in the first stage in the direction of the opposite jaw, and the protrusion height of the protrusion 3 or 6 provided on the dental appliance used in the third stage in the direction of the opposite jaw is less than the protrusion height of the protrusion 3 or 6 provided on the dental appliance used in the second stage in the direction of the opposite jaw. Of course, when orthodontic treatment is performed, the patient needs to wear a series of shell-shaped dental appliances for orthodontic treatment, and the geometric shapes of the series of shell-shaped dental appliances can be referred to the above example. The above description is the adjustment method of the intermaxillary relationship, which can also simultaneously correct the malocclusion teeth while adjusting the intermaxillary relationship, so that the orthopedic and orthodontic treatments are performed simultaneously. The wearing time of a pair of shell-shaped dental appliances is 7-14 days, and a series of shell-shaped dental appliances are set according to different case types and complexity of the patient to achieve the treatment effect.

[0128] In summary, the present application provides a dental appliance for adjusting the intermaxillary relationship and a dental treatment system thereof, which adopts protrusion jaw pads (corresponding to protrusions and guide portions) arranged on the upper and lower jaws to interact with each other, so as to not only open the bite, but also induce the mandible to protrude forward or retract backward. The retention structure arranged on the occlusal surface of the maxillary jaw pad increases the friction, so as to stabilize the intermaxillary occlusal position relationship, achieve the purpose of restricting the mandible to be in the protruded position or the retracted position while having a relatively stable occlusal relationship, and especially has a good treatment effect on the Angle II and III cases with a spee curve depth greater than 3mm.

[0129] The present application also provides a design method of the dental appliance for adjusting the intermaxillary relationship, which is used to obtain the first shell-shaped dental appliance and the second shell-shaped dental appliance.

[0130] Figure 12 The present application provides a design method of the dental appliance for adjusting the intermaxillary relationship.

[0131] As shown in Figure 12 A design method of the dental appliance for adjusting the intermaxillary relationship, comprising:

[0132] S1;obtaining a first initial dental model;

[0133] S2: design a protrusion model on the occlusal surface of the posterior region of the first initial dental arch digital model, specifically including obtaining protrusion feature information; wherein the protrusion feature information includes the size and preset position of the protrusion, and the occlusal surface of the protrusion facing the opposite tooth is arranged to match the concave-convex of the occlusal surface of the posterior region of the opposite tooth or to match the occlusion of the occlusal surface of the posterior region of the opposite tooth;

[0134] S3: generate a first dental arch digital model with a protrusion based on the first initial dental arch digital model and the protrusion model;

[0135] S4: design a first shell-shaped dental instrument based on the first dental arch digital model, so that the first shell-shaped dental instrument is a shell with a cavity accommodating the first dentition, and the posterior region of the first shell-shaped dental instrument has a protrusion protruding in the direction of the opposite tooth, the protrusion including a protrusion mesial surface and a protrusion distal surface;

[0136] S5: obtain a second initial dental arch digital model;

[0137] S6: design a guide model on the occlusal surface of the second initial dental arch digital model, specifically including obtaining guide feature information; wherein the guide feature information includes the size and preset position of the guide;

[0138] S7: generate a second dental arch digital model with a guide based on the second initial dental arch digital model and the guide model;

[0139] S8: design the second shell-shaped dental instrument according to the second dental arch digital model, so that the second shell-shaped dental instrument is a shell with a cavity accommodating the second dentition, and the second shell-shaped dental instrument has a guide cooperating with the protrusion of the first shell-shaped dental instrument, the guide including a guide mesial surface and a guide distal surface;

[0140] Wherein, the first shell-shaped dental instrument and the second shell-shaped dental instrument are the first shell-shaped body accommodating the upper teeth and the second shell-shaped body accommodating the lower teeth, respectively;

[0141] When the first shell-shaped body and the second shell-shaped body interact, the guide guides the movement of the protrusion, and at the same time, the protrusion moves to a predetermined position to make the retaining portion stably contact the occlusal surface on the second shell-shaped body.

[0142] It should be noted that the execution of S1 to S4 above can be synchronized with the execution of S5 to S8 above, or S5 to S8 above can be executed before S1 to S4 above. In other words, there is no design order restriction in the design of the first shell-shaped dental instrument and the second shell-shaped dental instrument in the present application.

[0143] In a preferred embodiment, the distal direction of the guide part guides the proximal direction of the protrusion part to induce mandibular protrusion, which can effectively treat Angle II cases;

[0144] In another preferred embodiment, the proximal direction of the guide part guides the distal direction of the protrusion part to induce mandibular retrusion, which can effectively treat Angle III cases.

[0145] In a preferred embodiment, the above design method further comprises S9, which comprises: in the process of designing the second shell-shaped dental appliance on the second dental model, a limiting part is designed to limit the relative movement of the protrusion part together with the guide part, wherein the limiting part comprises a limiting part proximal surface and a limiting part distal surface.

[0146] In a preferred embodiment, the limiting part proximal surface and the protrusion part distal surface are provided with interacting contact surfaces to stabilize the adjusted maxillomandibular relationship to induce mandibular protrusion, which can effectively treat Angle II cases.

[0147] In another preferred embodiment, the limiting part distal surface and the protrusion part proximal surface are provided with interacting contact surfaces to stabilize the adjusted maxillomandibular relationship to induce mandibular retrusion, which can effectively treat Angle III cases.

[0148] The present application also provides a preparation method of an appliance for adjusting the maxillomandibular relationship, which is based on the above design method to prepare the designed dental appliance accordingly, and the preparation method comprises a hot-pressing forming method or a direct 3D printing method.

[0149] In an embodiment, the manufacturing module in the preparation method can be an additive manufacturing machine, which uses additive manufacturing technology to prepare the shell-shaped dental appliance, i.e., directly prints the obtained shell-shaped dental appliance finite element digital model into a shell-shaped dental appliance by using 3D printing technology, and the 3D printing technology can be SLA (stereolithography) or DLP (digital light projection).

[0150] In another embodiment, the manufacturing module in the preparation method can also be a 3D printing device, a film pressing device, a cutting device, a polishing device, and a cleaning and disinfection device. The specific preparation process is as follows: first, the required digital dental model finite element digital model is directly printed by using 3D printing technology; second, film pressing operation is performed on the printed 3D dental model; and finally, the shell-shaped dental appliance with the pressed film is cut, polished, cleaned, and disinfected, etc., to finally obtain the shell-shaped dental appliance.

[0151] While the embodiments of the application have been illustrated and described in detail, it will be readily apparent to those skilled in the art that various modifications and changes can be made to the embodiments without departing from the scope and spirit of the application, as described in the claims. Moreover, the application described is not limited in its application to the details set forth in the description or illustrated in the drawings. The application is capable of other embodiments and of being practiced or carried out in various ways.

Claims

1. A dental device for adjusting the relationship between upper and lower jaws, comprising a first shell-shaped body for accommodating upper teeth and a second shell-shaped body for accommodating lower teeth, characterized in that: The first shell-like body is provided with a protruding portion at the position of the occlusal surface of the posterior teeth area protruding toward the opposite jaw to induce the adjustment of the upper and lower jaw position relationship; the second shell-like body is provided with a guiding portion at the position of the tooth and jaw occlusal surface to guide the protruding portion to make the upper and lower jaw position relationship tend to be normal; the mesial direction surface of the protruding portion and the distal direction surface of the guiding portion are provided with interacting contact surfaces to induce the adjustment of the upper and lower jaw position relationship; the protruding portion is provided with a retaining portion that is in stable contact with the second shell-like body at the position facing the opposite jaw occlusal surface; when the first shell body interacts with the second shell body, the distal direction surface of the guiding portion guides the mesial direction surface of the protruding portion to move, and at the same time, the protruding portion moves to a predetermined position to make the retaining portion in stable contact with the occlusal surface on the second shell body; The second shell-like body is also provided with a limiting portion that works together with the guiding portion to limit the relative movement of the protrusion. The mesial surface of the limiting portion and the distal surface of the protrusion are provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw position relationship; when the first shell-like body interacts with the second shell-like body, the protrusion is located between the guiding portion and the limiting portion.

2. The dental device for adjusting the relationship between upper and lower jaws according to claim 1, wherein: The interactive contact surface between the proximal surface of the protrusion and the distal surface of the guide portion is a smooth contact or a non-smooth contact.

3. The dental device for adjusting the relationship between upper and lower jaws according to claim 1, wherein: The structure of the retaining portion is a concave-convex structure having the same anatomical features as the occlusal surface of the posterior tooth area of ​​the second shell-shaped body.

4. The dental device for adjusting the relationship between upper and lower jaws according to claim 1, wherein: The structure of the retaining portion is a concave-convex structure formed by the anatomical features of the occlusal surface of the posterior tooth area of ​​the first shell-shaped body extending toward the jaw.

5. The dental device for adjusting the relationship between upper and lower jaws according to claim 1, wherein: The structure of the retaining portion is one or a combination of two or more of a structure having a frosted surface, a structure having convex points, a structure having a hollow surface, or a structure having a hole surface.

6. The dental device for adjusting the relationship between upper and lower jaws according to claim 1, wherein: The rigidity of the protrusion is greater than the rigidity of the area of ​​the first shell-like body accommodating the maxillary teeth; the rigidity of the guide portion is greater than the rigidity of the area of ​​the second shell-like body accommodating the mandibular teeth.

7. The dental device for adjusting the relationship between upper and lower jaws according to claim 6, wherein: The protrusion is different from the first shell-like body in at least one of the thickness, hardness, material, and number of layers of the area accommodating the maxillary teeth; the guide is different from the second shell-like body in at least one of the thickness, hardness, material, and number of layers of the area accommodating the mandibular teeth.

8. The dental device for adjusting the relationship between upper and lower jaws according to claim 1, wherein: The hardness and / or elastic modulus of the retaining portion on the protruding portion is greater than the hardness and / or elastic modulus of the area of ​​the first shell-shaped body accommodating the maxillary teeth.

9. The dental device for adjusting the relationship between upper and lower jaws according to claim 1, wherein: The mesial surface of the limiting portion and the distal surface of the protruding portion are provided with interacting contact surfaces which are non-smooth surfaces.

10. The dental device for adjusting the relationship between upper and lower jaws according to claim 9, wherein: The non-smooth surface is one or a combination of two or more of a structure having a frosted surface, a structure having convex points, a structure having a hollow surface, or a structure having a hole surface.

11. The dental device for adjusting the relationship between upper and lower jaws as claimed in claim 9, characterized in that: The protruding portion and the limiting portion are respectively provided with magnets with the same polarity for inducing adjustment of the upper and lower jaw position relationship.

12. The dental device for adjusting the relationship between upper and lower jaws as claimed in claim 9, characterized in that: The protruding portion and the guiding portion are respectively provided with magnets with opposite polarities to stabilize the relative jaw position relationship, and the limiting portion is provided with a magnet with the same polarity as that in the protruding portion.

13. The dental device for adjusting the relationship between upper and lower jaws according to claim 1, wherein: The first shell body is provided with a plurality of protrusions, and the second shell body is provided with a plurality of guides that interact with the protrusions. The plurality of protrusions interact with the plurality of guides to induce adjustment of the upper and lower jaw position relationship to be normal.

14. The dental device for adjusting the relationship between upper and lower jaws according to claim 1, wherein: The length of the raised portion along the mesiodistal direction of the dentition at least partially covers the mesiodistal length of the posterior teeth; the length of the guide portion along the mesiodistal direction of the dentition at least partially covers the mesiodistal length of the canines.

15. The dental device for adjusting the relationship between upper and lower jaws according to claim 1, wherein: The protruding portion and / or the guiding portion is filled with a filling portion for enhancing bite strength.

16. The dental device for adjusting the relationship between upper and lower jaws according to any one of claims 1-11 and 13-15, characterized in that: The protruding portion and the guiding portion are respectively provided with magnets with opposite polarities to stabilize the relative jaw position relationship.

17. The dental device for adjusting the relationship between upper and lower jaws according to claim 1, wherein: The protrusion and the first shell-shaped body are integrally formed; the guide portion and the second shell-shaped body are integrally formed.

18. A dental device for adjusting the relationship between upper and lower jaws, comprising a first shell-shaped body for accommodating upper teeth and a second shell-shaped body for accommodating lower teeth, characterized in that: The first shell-like body is provided with a protruding portion at the position of the occlusal surface of the posterior teeth area protruding toward the opposite jaw to induce the adjustment of the upper and lower jaw position relationship; the second shell-like body is provided with a guiding portion at the position of the tooth and jaw occlusal surface to guide the protruding portion to make the upper and lower jaw position relationship tend to be normal; the distal direction surface of the protruding portion and the mesial direction surface of the guiding portion are provided with interacting contact surfaces to induce the adjustment of the upper and lower jaw position relationship; the protruding portion is provided with a retaining portion that is in stable contact with the second shell-like body at the position facing the opposite jaw occlusal surface; when the first shell body interacts with the second shell body, the mesial direction surface of the guiding portion guides the distal direction surface of the protruding portion to move, and at the same time, the protruding portion moves to a predetermined position to make the retaining portion in stable contact with the occlusal surface on the second shell body; The second shell-like body is also provided with a limiting portion that works together with the guide portion to limit the relative movement of the protrusion. The distal surface of the limiting portion and the mesial surface of the protrusion are provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw position relationship; when the first shell-like body interacts with the second shell-like body, the protrusion is located between the guide portion and the limiting portion.

19. The dental device for adjusting the relationship between upper and lower jaws according to claim 18, wherein: The interacting contact surfaces provided in the distal direction of the protrusion and the proximal direction of the guide portion are smooth contact or non-smooth contact.

20. The dental device for adjusting the relationship between upper and lower jaws according to claim 18, wherein: The structure of the retaining portion is a concave-convex structure having the same anatomical features as the occlusal surface of the posterior tooth area of ​​the second shell-shaped body.

21. The dental device for adjusting the relationship between upper and lower jaws according to claim 18, wherein: The structure of the retaining portion is a concave-convex structure formed by the anatomical features of the occlusal surface of the posterior tooth area of ​​the first shell-shaped body extending toward the jaw.

22. The dental device for adjusting the relationship between upper and lower jaws according to claim 18, wherein: The rigidity of the protrusion is greater than the rigidity of the area of ​​the first shell-like body accommodating the maxillary teeth; the rigidity of the guide portion is greater than the rigidity of the area of ​​the second shell-like body accommodating the mandibular teeth.

23. The dental device for adjusting the relationship between upper and lower jaws according to claim 22, wherein: The protrusion is different from the first shell-like body in at least one of the thickness, hardness, material, and number of layers of the area accommodating the maxillary teeth; the guide is different from the second shell-like body in at least one of the thickness, hardness, material, and number of layers of the area accommodating the mandibular teeth.

24. The dental device for adjusting the relationship between upper and lower jaws according to claim 18, wherein: The hardness and / or elastic modulus of the retaining portion on the protruding portion is greater than the hardness and / or elastic modulus of the area of ​​the first shell-shaped body that accommodates the maxillary teeth.

25. The dental device for adjusting the relationship between upper and lower jaws according to claim 18, wherein: The distal surface of the limiting portion and the proximal surface of the protruding portion are provided with interacting contact surfaces which are non-smooth surfaces.

26. The dental device for adjusting the relationship between upper and lower jaws according to claim 25, wherein: The non-smooth surface is one or a combination of two or more of a structure having a frosted surface, a structure having convex points, a structure having a hollow surface, or a structure having a hole surface.

27. The dental device for adjusting the relationship between upper and lower jaws as claimed in claim 18, characterized in that: The protruding portion and the limiting portion are respectively provided with magnets with the same polarity for inducing adjustment of the upper and lower jaw position relationship.

28. The dental device for adjusting the relationship between upper and lower jaws as claimed in claim 18, characterized in that: The protruding portion and the guiding portion are respectively provided with magnets with opposite polarities to stabilize the relative jaw position relationship, and the limiting portion is provided with a magnet with the same polarity as that in the protruding portion.

29. The dental device for adjusting the relationship between upper and lower jaws according to claim 18, wherein: The first shell body is provided with a plurality of protrusions, and the second shell body is provided with a plurality of guides that interact with the protrusions. The plurality of protrusions interact with the plurality of guides to induce adjustment of the upper and lower jaw position relationship to be normal.

30. The dental device for adjusting the relationship between upper and lower jaws according to claim 18, wherein: The length of the raised portion along the mesiodistal direction of the dentition at least partially covers the mesiodistal length of the posterior teeth; the length of the guide portion along the mesiodistal direction of the dentition at least partially covers the mesiodistal length of the canines.

31. The dental device for adjusting the relationship between upper and lower jaws according to claim 18, wherein: The protruding portion and / or the guiding portion is filled with a filling portion for enhancing bite strength.

32. The dental device for adjusting the relationship between upper and lower jaws according to any one of claims 18-27 and 29-31, wherein: The protruding portion and the guiding portion are respectively provided with magnets with opposite polarities to stabilize the relative jaw position relationship.

33. The dental device for adjusting the relationship between upper and lower jaws according to claim 18, wherein: The protrusion and the first shell-shaped body are integrally formed; the guide portion and the second shell-shaped body are integrally formed.

34. A dental correction system comprising multiple sets of dental instruments for adjusting the relationship between upper and lower jaws, characterized in that: The multiple sets of dental instruments for adjusting the relationship between the upper and lower jaws include at least one set of dental instruments for adjusting the relationship between the upper and lower jaws as described in any one of claims 1-33.

35. The dental orthodontic system according to claim 34, wherein: The multiple sets of dental instruments for adjusting the relationship between the upper and lower jaws have geometric shapes that enable the teeth to be gradually repositioned from an initial position to a target correction position.

36. The dental orthodontic system of claim 34, wherein: The protruding height of the protruding portion and the protruding height of the guiding portion in the direction of the opposite jaw, which are arranged on different sets of dental instruments for adjusting the upper and lower jaw positions, gradually decrease during the correction process.

37. A method for designing a dental device for adjusting the relationship between upper and lower jaws, characterized by: Obtaining a first initial dental digital model; Designing a raised portion model on the occlusal surface of the posterior tooth area of ​​the first initial dental digital model, specifically including obtaining characteristic information of the raised portion; The characteristic information of the raised portion includes the size and preset position of the raised portion, and the occlusal surface of the raised portion facing the opposing teeth is arranged to be concave-convexly matched with the occlusal surface of the posterior teeth of the opposing teeth or is arranged to be occlusally matched with the occlusal surface of the posterior teeth of the opposing teeth; generating a first dental digital model having a raised portion based on the first initial dental digital model and the raised portion model; designing a first shell-shaped dental appliance based on the first digital model of the dental jaw, such that the first shell-shaped dental appliance is in a shell shape having a cavity for accommodating the first tooth row, and a posterior tooth region of the first shell-shaped dental appliance has a raised portion protruding toward the opposing jaw, the raised portion including a mesial surface and a distal surface; Obtaining the second initial dental digital model; Designing a guide part model on the occlusal surface of the second initial dental digital model, specifically including obtaining characteristic information of the guide part; The guide portion characteristic information includes the size and preset position of the guide portion; generating a second dental digital model with a guide part based on the second initial dental digital model and the guide part model; designing the second shell-shaped dental appliance based on the second dental jaw digital model, so that the second shell-shaped dental appliance is in a shell shape having a cavity for accommodating the second tooth row, and the second shell-shaped dental appliance has a guide portion that cooperates with the raised portion of the first shell-shaped dental appliance, the guide portion including a mesial guide surface and a distal guide surface; Wherein, the first shell-shaped dental appliance and the second shell-shaped dental appliance are respectively the first shell-shaped body for accommodating maxillary teeth and the second shell-shaped body for accommodating mandibular teeth as described in claims 1-33; When the first shell-like body interacts with the second shell-like body, the guide portion guides the protrusion to move, and at the same time, the protrusion moves to a predetermined position so that the retaining portion is in stable contact with the occlusal surface on the second shell-like body; The process of designing the second shell-shaped dental instrument based on the second dental jaw digital model also includes a step of designing a limiting portion, so that the designed dental instrument can jointly limit the relative movement of the protrusion through the limiting portion and the guide portion, wherein the limiting portion includes a mesial surface of the limiting portion and a distal surface of the limiting portion.

38. The method for designing a dental device for adjusting the maxillary and mandibular relationship according to claim 37, wherein: The distal direction surface of the guide portion guides the mesial direction surface of the protrusion portion to move, or the mesial direction surface of the guide portion guides the distal direction surface of the protrusion portion to move.

39. The method for designing a dental device for adjusting the maxillary and mandibular relationship according to claim 37, wherein: The mesial surface of the limiting portion and the distal surface of the raised portion are provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw positions; or the distal surface of the limiting portion and the mesial surface of the raised portion are provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw positions.

40. A method for preparing a dental device for adjusting the relationship between upper and lower jaws, characterized in that: The dental device designed based on the design method described in any one of claims 37-39 is prepared accordingly, and the preparation method includes: hot pressing or direct 3D printing.

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