Dental appliances and orthodontic treatment systems

Abstract

Embodiments of the present application disclose shell-shaped dental appliances and orthodontic treatment systems. [Solution] The dental device includes a first shell-shaped body that accommodates the maxillary teeth and a second shell-shaped body that accommodates the mandibular teeth, a first type of protrusion is provided on the buccal or lingual side of the molar region of the first shell-shaped body, and a position limiting portion that engages with the first type of protrusion is provided on the buccal or lingual side of the molar region of the second shell-shaped body, the first type of protrusion and the position limiting portion interacting with each other to adjust the relative positional relationship between the maxillary position and the mandibular position, and a second type of protrusion that protrudes toward the opposing jaw is provided on the occlusal surface of the molar region of the first shell-shaped body or the second shell-shaped body, and the protruding height of the second type of protrusion compensates for the open bite space formed in the molar region by the interaction of the first type of protrusion and the position limiting portion, thereby stabilizing the occlusal condition.

Description

[Technical field]

[0001] This application is filed based on a Chinese patent application having application number 202221364936.9 and filing date June 2, 2022, and claims priority to the above-mentioned Chinese patent application, the entire contents of which are incorporated herein by reference.

[0002] FIELD OF THE DISCLOSURE

[0002] Embodiments of the present application relate to the art of orthodontic treatment, more particularly to the art of manufacturing orthodontic appliances, and more particularly to dental appliances and orthodontic treatment systems. [Background technology]

[0003] Malocclusion refers to defects in the position and relationship of teeth, dental arches, jaws and craniofacial structures, and common symptoms include crowding, diastema, crossbite, etc. Most malocclusions refer to misalignment of teeth, abnormal relationship between maxillary and mandibular dental arches, abnormal size, shape and position of jaws, facial deformity, etc., caused by congenital genetic factors or acquired environmental factors, such as disease, oral habits, disorders during the mixed dentition stage, trauma after growth and development, periodontal disease, etc., during the growth and development process of children.

[0004] Shell-shaped orthodontic appliances are devices for treating malocclusion. They are made of safe and transparent elastic polymeric materials, and the orthodontic treatment process can be completed without being noticed by others. For cases of maxillary and maxillary prognathism that contain sagittal jaw position factors, it is necessary to correct the jaw position by jaw position reconstruction and guide the mandible forward. Depending on the indication, the currently commonly used lingual bracket orthodontic appliances for jaw position reconstruction are divided into two types: TB (abbreviation of Twin-block) and HB (abbreviation of Herbst). The main difference between the two types of orthodontic appliances is whether the case has an overbite or not. If there is an overbite, TB is selected, and for cases of arthropathic mandibular retrusion with only maxillary prognathism without an overbite, HB is selected. However, clinically, in some cases of arthropathic mandibular recession, after the mandible is guided forward, a partial open bite of 1 to 4 mm occurs in the molars due to a curve problem. In this case, if the mandible is simply guided forward using the HB brace, the contact area in the molar region becomes too small, causing the jaw position to become unstable. This in turn affects eating when the brace is worn due to the open bite in the molar region.

[0005] In this application, the "chin" in the words "malocclusion," "open bite," "deep bite," "maxillofacial," etc. is a character that is rarely used ("occlusion"). There is no such character in the character bank of the general input method, and it is referred to as "chin" in everyday life and on networks. For ease of reading, this specification also uses "chin." Summary of the Invention [Problem to be solved by the invention]

[0006] The technical problem solved by the embodiments of the present application is to eliminate the deficiencies in the prior art and provide a dental appliance and orthodontic treatment system, which allows the relationship between the maxillary position and the mandibular position to be properly adjusted under the action of the dental appliance, while at the same time improving the occlusal stability after wearing and making the wearing comfort as high as possible. [Means for solving the problem]

[0007] The technical means according to the embodiment of the present application includes at least the following: A dental appliance includes a first shell-shaped body for accommodating maxillary teeth and a second shell-shaped body for accommodating mandibular teeth, a first type of protrusion is provided on the buccal or lingual side of the molar region of the first shell-shaped body, a position limiting part engaged with the first type of protrusion is provided on the buccal or lingual side of the molar region of the second shell-shaped body, the first type of protrusion and the position limiting part act together to adjust the relative positional relationship between the maxillary position and the mandibular position, a second type of protrusion protruding toward the opposing jaw is provided on the occlusal surface of the molar region of the first shell-shaped body or the second shell-shaped body, and the protruding height of the second type of protrusion compensates for the open bite space formed in the molar region by the mutual action of the first type of protrusion and the position limiting part, thereby stabilizing the occlusal state.

[0008] The technical means according to the embodiment of the present application further includes at least the following: An orthodontic treatment system includes a plurality of said dental appliances, including at least one set of said dental appliances.

[0009] The embodiment of the present application has at least the following advantages and beneficial effects by using the above technical means. A first type of protrusion is provided on the buccal or lingual side of the molar region of the first shell-shaped body corresponding to the upper jaw, and a position limiting part is provided on the buccal or lingual side of the molar region of the second shell-shaped body corresponding to the lower jaw, which is engaged with the first type of protrusion, so that the first type of protrusion and the position limiting part interact with each other to adjust the relative positional relationship between the upper jaw position and the lower jaw position, and gradually return the jaw position to the correct occlusal relationship. In addition, a second type of protrusion is provided on the occlusal surface of the molar region of the shell-shaped body to compensate for the open bite space that appears in the molar region when adjusting the inter-jaw relationship, and the second type of protrusion comes into contact with the opposing jaw to increase the contact area during occlusion in the molar region, thereby improving occlusal stability and improving the wearer's chewing experience.

[0010] In another embodiment, the first type of protrusion extends toward the second shell-shaped body along the gingival direction and at least partially covers the buccal surface of the second shell-shaped body, the position limiting portion extends toward the first shell-shaped body along the gingival direction and at least partially covers the buccal surface of the first shell-shaped body, and the mesial surface of the first type of protrusion and the distal surface of the position limiting portion interact with each other to adjust the relative positional relationship between the upper jaw and the lower jaw in the sagittal direction, or the distal surface of the first type of protrusion and the mesial surface of the position limiting portion interact with each other to adjust the relative positional relationship between the upper jaw and the lower jaw in the sagittal direction. The positions and structures of the first type of protrusion and the position limiting portion are clearly defined, and the first type of protrusion and the position limiting portion interact with each other to adjust the relative positional relationship between the upper jaw and the lower jaw in the sagittal direction.

[0011] In another embodiment, the second type of protrusion covers at least one tooth of the shell-like body where the open bite space is located. By limiting the second type of protrusion to cover at least one tooth, it increases the sufficient contact area and ensures occlusal stability.

[0012] In another embodiment, the open bite space includes a space corresponding to a second molar, and the second type of protrusion covers at least one tooth other than the second molar of the shell-shaped body where the open bite space is located. By restricting the second type of protrusion not to cover the second molar, and since the second molar is the last tooth, not providing the second type of protrusion can not affect the tooth gap and can avoid the shell-shaped body from falling off during wearing.

[0013] In another embodiment, the tooth positions where the second type of protrusions are provided are different from the tooth positions where the first type of protrusions are provided. By limiting each protrusion to a different tooth position, it is possible to avoid having too many parts at the same tooth position and to easily maintain the sheet of the orthodontic appliance approximately uniform.

[0014] In another embodiment, both the first type protrusion and the second type protrusion are provided on the first shell-shaped body, and the dental position on which the second type protrusion is provided is adjacent to the dental position on which the first type protrusion is provided. By providing them on the adjacent dental positions, the positions of action for adjusting the inter-jaw relationship and stabilizing occlusion are closer to each other, making it easier to stabilize occlusion.

[0015] In another embodiment, the second type of protrusion is provided corresponding to the occlusal surface of the tooth in the corresponding dental position of the opposing jaw. By restricting the position of the second type of protrusion to correspond to the occlusal surface of the tooth in the corresponding dental position of the opposing jaw, the support force is stronger and the occlusal stability is higher.

[0016] In another embodiment, when the first shell-shaped body and the second shell-shaped body interact with each other, the occlusal surface of the second type of protrusion is adapted to the irregularities of the occlusal surface of the tooth in the corresponding dental position of the opposing jaw. By restricting the adaptation to the irregularities of the occlusal surface, the contact area during occlusion is further increased and the occlusal state is stabilized.

[0017] In another embodiment, the second type of protrusion is provided with a reinforcing structure, which reinforces the strength of the second type of protrusion. By limiting the provision of the reinforcing structure to the second type of protrusion, the strength is enhanced and damage to the second type of protrusion is avoided.

[0018] In another embodiment, the reinforcing structure is a reinforcing rib provided on the buccal surface and / or the lingual surface of the second type protrusion. By clarifying the use of the reinforcing rib as the reinforcing structure, and since the reinforcing rib is formed in a process such as compression molding, the design of the reinforcing rib reduces the variation of the processing step and fits into the existing process.

[0019] In another embodiment, the second type of protrusion is a hollow structure, and the reinforcing structure is a filler arranged in the second type of protrusion. By arranging the filler in the hollow structure, the strength of the second type of protrusion is enhanced, and the method is simple and effective.

[0020] In another embodiment, the elastic modulus of the material of the first type of protrusions and / or the second type of protrusions is greater than the elastic modulus of the material of the first shell-like body. By choosing materials with different elastic moduli, the strength of the protrusions is increased.

[0021] In another embodiment, the second type of protrusions in at least two sets of the dental appliances have different heights along the longitudinal axis of the teeth. During orthodontic treatment, the second type of protrusions can be provided to change height along the longitudinal axis of the teeth as the height of the open bite space changes as the orthodontic treatment process progresses. [Brief description of the drawings]

[0022] [Figure 1] 1 is a schematic diagram of a first shell-like body of a dental instrument according to one embodiment of the present application. [Diagram 2] 2 is a schematic diagram of a second shell-like body of a dental appliance according to one embodiment of the present application. [Diagram 3] FIG. 2 is a side view of a first shell-shaped body and a second shell-shaped body in an occluded state in a dental device according to one embodiment of the present application. [Figure 4] 4 is a partial schematic diagram of a connection portion between a first type protrusion and a first shell-shaped body in one embodiment of the present application. FIG. [Diagram 5] FIG. 2 is a side view of a first shell-shaped body and a second shell-shaped body in an occluded state in a dental device according to one embodiment of the present application. [Figure 6] 1 is a schematic diagram of a first shell-like body of a dental instrument according to one embodiment of the present application. [Figure 7] 1 is a schematic diagram of a first shell-like body of a dental instrument according to one embodiment of the present application. [Figure 8] FIG. 2 is a side view of a first shell-shaped body and a second shell-shaped body in an occluded state in a dental device according to one embodiment of the present application. [Figure 9] 1 is a schematic diagram of a first shell-like body of a dental instrument according to one embodiment of the present application. [Figure 10] 1 is a schematic diagram of a first shell-like body of a dental instrument according to one embodiment of the present application. [Figure 11] Schematic diagram of the first shell-shaped body in a dental appliance according to an embodiment of the present application. [Figure 12] Schematic diagram of the second shell-shaped body in a dental appliance according to an embodiment of the present application.

Embodiments for Carrying Out the Invention

[0023] To more clearly explain the technical means in the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present application. As long as there is no contradiction, the embodiments in the present application and the technical features in the embodiments can be combined with each other. For those skilled in the art, based on these drawings, other drawings can be obtained and other embodiments can also be obtained without creative labor.

[0024] To simplify the drawings, only the parts related to the present application are schematically shown in each drawing, and these do not show the actual structure as a product. Also, to simplify and make the drawings easier to understand, among several drawings, only one of the members having the same structure or function is schematically drawn or only one of them is denoted. In this specification, "one" not only represents "only one", but can also represent the case of "one or more".

[0025] An embodiment of the present application provides a dental appliance. As shown in FIGS. 1 and 2, the dental appliance includes a first shell-shaped body 10 for accommodating upper teeth and a second shell-shaped body 20 for accommodating lower teeth. On the buccal surface of the molar region of the first shell-shaped body 10, a first type of protrusion 11 is provided. On the buccal surface of the molar region of the second shell-shaped body 20, a position-limiting portion 21 used in engagement with the first type of protrusion 11 is provided. The first type of protrusion 11 and the position-limiting portion 21 act on each other to adjust the relative positional relationship between the upper jaw position and the lower jaw position.

[0026] The following describes the related terms described. The "posterior tooth region" includes premolars and molars and corresponds to teeth numbered 4 to 8 in the FDI notation, based on the definition of tooth types on pages 36 to 38 of the second edition of "Introduction to Stomatology" published by Peking University Medical Press. The anterior tooth region corresponds to teeth numbered 1 to 3 in the FDI notation. Also, the mesial surface and the distal surface are the two surfaces where the tooth crown is adjacent to the adjacent tooth, and are collectively referred to as the adjacent surface. The surface close to the midfacial line is called the mesial surface, and the surface away from the midfacial line is called the distal surface. Also, the sagittal plane is an anatomical term. The human body is divided into two left and right parts, and the left and right cross-sections are sagittal planes, and the cross-section that divides the body equally into left and right is called the median sagittal plane. Based on the medical imaging engineering terms published in 2020, the sagittal direction is the direction parallel to the sagittal plane where the central line of the X-ray enters from the front or rear of the subject's body.

[0027] As shown in Figure 3, in other embodiments, the first type of protrusion 11 extends along the gingival side direction towards the second shell-shaped body 20, at least partially covering the buccal surface of the second shell-shaped body 20. The position-limiting portion 21 extends along the gingival side direction towards the first shell-shaped body 10, at least partially covering the buccal surface of the first shell-shaped body 10. The mesial surface 112 of the first type of protrusion 11 and the distal surface 211 of the position-limiting portion 21 act on each other to adjust the relative positional relationship between the upper jaw and the lower jaw in the sagittal direction. As can be seen from this, by providing the first type of protrusion 11 and the position-limiting portion 21 engaged therewith on both buccal surfaces respectively, the dentognathic part can be guided from both sides, so that they can act together from both sides to stabilize the occlusion state.

[0028] In another embodiment, the first type of protrusion 11 and the position limiting portion 21 are exposed canine-like, the portion close to the portion connected to the shell-like body where they are located is called the root, and the portion away from the root is called the apex, and in practical application, the first type of protrusion 11 and the position limiting portion 21 gradually narrow from the root to the apex. In another embodiment, the first type of protrusion 11 may have a gingival edge flush with the gingival line and a apex facing the opposing tooth, and the position limiting portion 21 may have a gingival edge flush with the gingival line and a apex facing the opposing tooth, and the first type of protrusion 11 and the position limiting portion 21 are parallel in their long axis directions. Note that the joint portion between the first type of protrusion 11 and the position limiting portion 21 and the shell-like body where they are located must not be higher than the occlusal surface (also called the maxillofacial surface) as shown by the dashed circle A in FIG. 4. The first type of protrusion 11 and the position limiting portion 21 extending from the upper and lower jaws respectively can act on each other during the wearer's occlusion process, and the first type of protrusion 11 of the first shell-shaped body 10 applies a forward force in the sagittal direction to the position limiting portion 21 of the second shell-shaped body 20, and the position limiting portion 21 of the second shell-shaped body 20 applies a backward force in the sagittal direction to the first type of protrusion 11, contributing to returning the teeth and jaw portion to the correct position based on the tendency of the above forces, and achieving the purpose of treating malocclusion.

[0029] Furthermore, since the inside of the extended portion does not collide with the opposing teeth, the extended portion does not collide with the tips of the opposing teeth, and the portions extending from the upper and lower jaws do not collide with each other, interference with the occlusion process is avoided.

[0030] In another embodiment, as shown in FIG. 5, the first type of protrusion 11 of the first shell-shaped body 10 and the position limiting portion 21 of the second shell-shaped body 20 are provided with a reinforcing rib 111 having a concave-convex structure on the buccal surface, and the reinforcing rib 111 is provided along the long axis direction of the tooth to enhance the strength of the first type of protrusion 11 and the position limiting portion 21 and prevent damage when they bite or interact with each other.

[0031] In another embodiment, the occlusal surface of the molar region of the first shell-shaped body 10 is provided with a second type of protruding portion 12 protruding toward the opposing jaw, and the protruding height of the second type of protruding portion 12 compensates for the open bite space formed in the molar region by the interaction of the first type of protruding portion 11 and the position limiting portion 21, thereby stabilizing the occlusal state. In another embodiment, the second type of protruding portion 12 covers one tooth of the shell-shaped body (i.e., the first shell-shaped body 10) where the open bite space is located, and its maximum height may be 4 mm or less. In this embodiment, the height is limited to 4 mm or less, for example, 2 mm or 1.5 mm, but in other embodiments, it may be designed to another height, for example, 6 mm, etc., and may be designed based on the actual needs of the doctor, and is not limited here.

[0032] In one embodiment, the dental position where the first type of protrusion 11 is provided may be different from the dental position where the second type of protrusion 12 is provided. In another embodiment, when the first type of protrusion 11 and the second type of protrusion 12 are both provided on the same shell-shaped body (e.g., the first shell-shaped body 10), the dental position where the second type of protrusion 12 is provided is adjacent to the dental position where the first type of protrusion 11 is provided. As shown in FIG. 3, the first type of protrusion 11 is provided on the dental position of the number 5, and the second type of protrusion 12 is provided on the dental position of the number 4. In another embodiment, the first type of protrusion 11 may be provided on the dental position of the number 4, and the second type of protrusion 12 may be provided on the dental position of the number 5. The dental position where each protrusion is located can be identified based on the actual demand and the height and position of the open bite space.

[0033] In one embodiment, the tooth position provided with the first type protrusion 11 may be the same as the tooth position provided with the second type protrusion 12. For example, the first type protrusion 11 and the second type protrusion 12 may both be provided at the tooth position of No. 4, and in practical application, both may be provided at the tooth position of No. 5, which will not be listed here.

[0034] In another embodiment, the second type of protrusion 12 is provided corresponding to the occlusal surface of the teeth in the corresponding dental position of the opposing jaw. In one embodiment, if there is no jaw deviation between the upper jaw and the lower jaw, when the dental appliance in the embodiment of the present application is worn and the upper jaw and the lower jaw bite each other, the dental arch positions of the molar region of the upper jaw and the lower jaw substantially correspond to each other, and as shown in FIG. 1, the second type of protrusion 12 protrudes from the middle part of the dental position where the second type of protrusion 12 is provided, and is distributed on the occlusal surface so that the dental arch line is substantially symmetrical. In another embodiment, if there is a jaw deviation between the upper jaw and the lower jaw, when the upper jaw and the lower jaw bite each other, the dental arch positions of the molar region of the upper jaw and the lower jaw are deviated and do not correspond to each other, and the protruding position of the second type of protrusion 121 may be biased toward the buccal side as shown in FIG. 6, and the protruding position of the second type of protrusion 122 may be biased toward the tongue side as shown in FIG. 7, and is specifically determined based on the direction of the jaw deviation. When the upper jaw is biased to the right relative to the lower jaw, the second type protrusion 122 on the left cheek side is biased toward the tongue side, and the second type protrusion on the right cheek side is biased toward the cheek side.

[0035] In another embodiment, the second type protrusion 12 is provided with a reinforcing structure, which enhances the strength of the second type protrusion 12. As shown in FIG. 3, the reinforcing structure in this embodiment is a reinforcing rib 131 provided on the buccal side and / or lingual side of the second type protrusion 124. That is, the reinforcing rib 131 on the second type protrusion 124 may be provided on both the lingual side and the buccal side at the same time, or may be provided only on the lingual side, or may be provided only on the buccal side (not shown). The reinforcing rib may be uneven and provided along the long axis direction of the tooth, which can improve the deformation resistance in the long axis direction and reduce the risk of the second type protrusion 124 being bitten off.

[0036] In addition, in another embodiment, when the first shell-shaped body 10 and the second shell-shaped body 20 act on each other, the occlusal surface of the second type of protruding part 12 is matched to the unevenness of the occlusal surface of the tooth in the corresponding dental position of the opposing jaw. By limiting the match to the unevenness of the occlusal surface, the contact area during occlusion is further increased, and similarly to the anatomical arrangement of the occlusal surface of the second type of protruding part 12, the contact area between the upper and lower jaws during occlusion is increased, and the stability of the occlusal state is effectively improved.

[0037] In another embodiment, the second type of protrusion 12 and the shell-shaped body on which the second type of protrusion 12 is located are an integral structure. In practical application, the integral structure is manufactured by hot pressing technology, specifically, the hot pressing process is carried out by 3D printing based on the corresponding digital dental model and a series of intermediate digital dental models to manufacture a real dental model, and then using a sheet to hot pressing the real dental model to obtain a shell-shaped dental appliance having a tooth shape, and then cutting the shell-shaped dental appliance having a tooth shape along or adjacent to the gum line to obtain a shell-shaped orthodontic appliance that can accommodate teeth.

[0038] As will be understood hereinafter, when the above technical means are used, a first type of protrusion 11 is provided on the buccal surface or the lingual surface of the molar region of the first shell-shaped body 10 corresponding to the upper jaw, and a position-limiting portion 21 used in engagement with the first type of protrusion 11 is provided on the buccal surface or the lingual surface of the molar region of the second shell-shaped body 20 corresponding to the lower jaw. By doing so, the first type of protrusion 11 and the position-limiting portion 21 act on each other to realize the adjustment of the relative positional relationship between the upper jaw position and the lower jaw position, and gradually realize the return of the jaw position to an accurate occlusal relationship. In other embodiments, by providing a second type of protrusion 12 on the occlusal surface of the molar region of the shell-shaped body, the open bite space that appears in the molar region when adjusting the intermaxillary relationship is compensated. When the second type of protrusion 12 contacts the opposing jaw, the contact area during occlusion in the molar region is increased, the occlusal stability is improved, and the chewing experience of the wearer is improved. Further, the positions and structures of the first type of protrusion 11 and the position-limiting portion 21 are clarified, and the first type of protrusion 11 and the position-limiting portion 21 act on each other to adjust the relative positional relationship between the upper jaw and the lower jaw in the sagittal direction. In other embodiments, by limiting that the position of the second type of protrusion 12 corresponds to the occlusal surface of the tooth at the tooth position corresponding to the opposing jaw, the supporting force is stronger and the occlusal stability is higher. Furthermore, in other embodiments, by limiting that each protrusion is provided at a different tooth position, it is possible to avoid having too many components at the same tooth position, and it is easy to maintain the orthodontic appliance sheet to be substantially uniform. In other embodiments, by being provided at adjacent tooth positions, the action positions for adjusting the intermaxillary relationship and stabilizing occlusion are closer, and the occlusion is more easily stabilized.

[0039] In the above embodiment, the mesial surface of the first type protrusion 11 and the distal surface of the position limiting portion 21 act on each other to adjust the relative positional relationship between the upper jaw and the lower jaw in the sagittal direction, but in actual application, the distal surface 211 of the first type protrusion 11 and the mesial surface 112 of the position limiting portion 21 may act on each other to adjust the relative positional relationship between the upper jaw and the lower jaw in the sagittal direction. That is, in other embodiments, the first type protrusion 11 is located on the distal side of the position limiting portion 21, but in actual application, the position limiting portion 21 may be provided on the distal side of the first type protrusion 11 according to the needs. As can be seen from this, the direction in which the orthodontic force needs to be applied can be specified according to the malocclusion relationship, and different positional relationships between the first type protrusion 11 and the position limiting portion 21 are designed accordingly.

[0040] In addition, in other embodiments, the first type of protrusion 11 and the position limiting portion 21 are provided on the buccal surface of the molar area, and in actual applications, as shown in Figures 11 and 12, the first type of protrusion 11 and the position limiting portion 21 may be provided on the lingual surface of the molar area, and the principles of their mutual interaction are similar, so they will not be described here one by one.

[0041] In another embodiment, the second type of protrusion 12 is provided on the first shell-shaped body 10, but in practical application, the second type of protrusion 12 may be provided on the second shell-shaped body 20, which has the same structure and will not be described here. In another embodiment, when provided on the first shell-shaped body 10, it can more easily stabilize the acting force and further stabilize the bite state.

[0042] An embodiment of the present application further provides a dental appliance. This embodiment is different from the above embodiment in that the second type of protrusion 12 covers one tooth in the above embodiment, but the second type of protrusion 12 covers two teeth in this embodiment. By covering multiple teeth, the contact area during occlusion can be further increased, and occlusion stability can be effectively improved.

[0043] In another embodiment, as shown in Fig. 8, the second type protrusion 125 specifically covers the first bicuspid 13 and the second bicuspid 14 in the molar region. In another embodiment, if an open bite exists on both sides of the dental jaw region, the second type protrusion 12 is provided on both sides of the dental appliance, and the maximum vertical height of the second type protrusion 12 on both sides may be different depending on the open bite position.

[0044] In another embodiment, the open bite space includes a space corresponding to a second molar, and the second type of protrusion 12 covers at least one tooth other than the second molar of the shell-like body in which the open bite space is located, i.e., even if an open bite exists in the space corresponding to the second molar, the second type of protrusion 12 does not cover the second molar when designed.

[0045] In other embodiments, the first type of protrusion 11 may be arranged so as to be biased toward the mesial buccal surfaces of the first molars on both sides, and other structural limitations are similar to those described in the above embodiments and will not be described here.

[0046] In addition, as shown in Fig. 9, in other embodiments, the second type protrusion 123 can cover more teeth, for example, specifically covering the first bicuspid 13, the second bicuspid 14, and the first molar 15 in the molar region. There are other covering methods, which are not listed here. In other embodiments, the second type protrusion 126 may be provided with a reinforcing rib structure 132 on the buccal and lingual sides, the specific structure of which is shown in Fig. 10 and will not be described here.

[0047] As can be seen from this, in another embodiment, the occlusal area of ​​the molar region is further increased and the occlusion state is stabilized by limiting the second type of protrusion 12 to cover a plurality of teeth. In another embodiment, the second type of protrusion 12 is limited to not cover the second molar, and since the second molar is the last tooth, not providing the second type of protrusion 12 does not affect the tooth gap and prevents the shell-shaped body from falling off during installation.

[0048] In addition, in the above embodiments, "second type protrusion 121," "second type protrusion 122," "second type protrusion 123," "second type protrusion 124," "second type protrusion 125," and "second type protrusion 126" are each different notations in the corresponding embodiments of "second type protrusion 12."

[0049] An embodiment of the present application further provides a dental appliance, which is different from the above embodiment in that the above embodiment uses the reinforcing rib 111 as the reinforcing structure of the second type protrusion 12, while the present embodiment uses the filler disposed in the second type protrusion 12 as the reinforcing structure.

[0050] In another embodiment, the second type of protrusion 12 is a hollow structure, and the reinforcing structure can be a filler disposed in the second type of protrusion 12. In another embodiment, the shape of the filler matches the inner diameter of the second type of protrusion 12. By disposing the filler in the hollow structure, the strength of the second type of protrusion 12 is enhanced, and the method is simple and effective.

[0051] In another embodiment, the material of the filling body is resin, and in practical application, the filling body and the dental appliance are given to the user separately, and the user is instructed to insert the filling body into the hollow part of the shell-shaped body where it should be placed and wear it before wearing the dental appliance, which is easy and practical.

[0052] As can be seen, the dental appliance in the above embodiment provides another reinforcing structure realization manner, enriches the realization manner of the reinforcing structure on the protrusion in practical application, and applies to different application scenarios.

[0053] In addition, in addition to the above embodiment in which the strength of the second type of protrusion 12 is enhanced by disposing the reinforcing rib and the filler therein, the second type of protrusion 12 may be manufactured using a material with a higher elastic modulus, and the strength of the protrusion may be enhanced by selecting a material with a different elastic modulus. Similarly, the same design may be used for the first type of protrusion 11, and will not be described here.

[0054] In addition, the various forms of reinforcement structures according to the above embodiments may be used alone, or may be used in combination to suit different application scenarios and design requirements, which will not be described here.

[0055] One embodiment of the present application further provides a dental appliance. This embodiment is different from the above embodiments in that the dental appliance in the above embodiments is manufactured by a thermocompression molding technique, while the dental appliance in this embodiment is manufactured by 3D printing.

[0056] In other embodiments, the specific manufacturing process is to print out the digital model of the designed shell-shaped dental aligner by means of 3D printing. Such a method only needs to design the necessary structures in the model when designing the digital dental appliance model and print them out together in the printing stage, without unnecessary extra steps, can be manufactured at one time, and the robustness of the manufactured dental appliance is also high. The additive manufacturing method in other embodiments may be SLA (stereolithography) printing or DLP (digital light processing) printing, or other 3D printing technologies may be used, which will not be enumerated one by one here.

[0057] In other embodiments, the second type of protrusion 12 has a solid structure. The solid structure helps to reduce the change of the dental appliance during the occlusion process and can improve the robustness of the dental appliance.

[0058] As can be seen from this, manufacturing a dental appliance by the 3D printing method has a simple process, high robustness, and is suitable for various application scenarios.

[0059] In addition to the integrated dental appliance, a separate dental appliance may also be used. That is, the second type of protrusion 12 is connected to the located shell-shaped body as an independent member by adhesion, welding or caulking.

[0060] According to one embodiment of the present application, there is provided an orthodontic treatment system including a plurality of dental appliances, including at least a set of dental appliances according to any one of the above embodiments.

[0061] In another embodiment, the dental appliances have a geometric shape that gradually positions the teeth from an initial position to a target orthodontic position. In another embodiment, the protruding height of the second type of protrusion 12 in the opposing jaw direction provided on the different dental appliances that adjust the relationship between the maxillary position and the mandibular position gradually decreases over the course of orthodontic treatment. In another embodiment, for example, a tooth is orthodontically treated by three orthodontic treatment stages, a different dental appliance is used for each stage, for example, the dental appliance used in the second orthodontic treatment stage is the dental appliance used after the first orthodontic treatment stage, and the dental appliances used in the three stages are different in that the protruding height in the opposing jaw direction of the second type of protruding portion 12 provided on the dental appliance used in the second orthodontic treatment stage is smaller than the protruding height in the opposing jaw direction of the second type of protruding portion 12 provided on the dental appliance used in the first orthodontic treatment stage, and the protruding height in the opposing jaw direction of the second type of protruding portion 12 provided on the dental appliance used in the third orthodontic treatment stage is smaller than the protruding height in the opposing jaw direction of the second type of protruding portion 12 provided on the dental appliance used in the second orthodontic treatment stage. Note that during orthodontic treatment, a patient needs to wear a series of shell-shaped dental appliances to perform orthodontic treatment, and the geometric shape of the series of shell-shaped dental appliances is regular, and the above-mentioned example can be referred to. The wearing time of one set of shell-shaped dental appliances is 7 to 14 days, and the orthodontic treatment effect is achieved by wearing a series of shell-shaped dental appliances according to the different cases and complexities of the patients.

[0062] Although the embodiments of the present application have been described in detail above with reference to the drawings, the present application is not limited to the above examples. Even if various modifications are made to the present application, these modifications are still included in the scope of protection of the present application as they fall within the scope of the utility model registration claims of the present application and the scope of equivalent techniques.

Claims

1. a first shell-like body for receiving the maxillary teeth and a second shell-like body for receiving the mandibular teeth; A first type of protrusion is provided on the buccal or lingual surface of the first shell-shaped body in the molar region, A position limiting portion is provided on the buccal or lingual surface of the second shell-shaped body in the molar region, the position limiting portion being engaged with the first type of protrusion, The first type protrusion portion and the position limiting portion act on each other to adjust the relative positional relationship between the upper jaw position and the lower jaw position, A second type of protrusion protruding toward the opposing jaw is provided on the occlusal surface of the molar region of the first shell-shaped body or the second shell-shaped body, The protruding height of the second type protruding portion compensates for an open bite space formed in a molar region by the interaction of the first type protruding portion and the position limiting portion, thereby stabilizing an occlusal state. Dental instruments.

2. the first type of protrusion extends along a gingival direction towards the second shell-shaped body and at least partially covers a buccal surface of the second shell-shaped body; the position limiting portion extends along a gingival direction toward the first shell-shaped body and at least partially covers a buccal surface of the first shell-shaped body; The mesial surface of the first type protrusion and the distal surface of the position limiting portion act on each other to adjust the relative positional relationship between the upper jaw and the lower jaw in the sagittal direction, or the distal surface of the first type protrusion and the mesial surface of the position limiting portion act on each other to adjust the relative positional relationship between the upper jaw and the lower jaw in the sagittal direction.

10. The dental device of claim 1.

3. The second type of protrusion covers at least one tooth of the shell-like body in which the open bite space is located. A dental instrument according to claim 1 or 2.

4. the open bite space includes a space corresponding to a second molar, and the second type of protrusion covers at least one tooth other than the second molar of the shell-like body in which the open bite space is located; A dental appliance according to any one of claims 1 to 3.

5. The maximum height of the second type protrusion is 4 mm or less. A dental device according to any one of claims 1 to 4.

6. The tooth position where the second type of protrusion is provided is different from the tooth position where the first type of protrusion is provided. A dental device according to any one of claims 1 to 5.

7. The first type of protrusion and the second type of protrusion are both provided on the first shell-shaped body, The tooth position on which the second type protrusion is provided is adjacent to the tooth position on which the first type protrusion is provided. A dental device according to any one of claims 1 to 6.

8. The second type of protrusion is provided corresponding to the occlusal surface of the tooth in the corresponding tooth position of the opposing jaw, A dental device according to any one of claims 1 to 7.

9. When the first shell-shaped body and the second shell-shaped body act against each other, the occlusal surface of the second type of protrusion is adapted to the irregularities of the occlusal surface of the teeth in the corresponding dental position of the opposing jaw. A dental device according to any one of claims 1 to 8.

10. The second type of protrusion is provided with a reinforcing structure, The reinforcing structure enhances the strength of the second type of protrusion. A dental device according to any one of claims 1 to 9.

11. The reinforcing structure is a reinforcing rib provided on the buccal surface and / or the lingual surface of the second type protrusion, 11. A dental device according to claim 10.

12. The second type protrusion has a hollow structure, The reinforcing structure is a filler disposed within the second type of protrusion.

11. A dental device according to claim 10.

13. the elastic modulus of the material of the first type of protrusions and / or the second type of protrusions is greater than the elastic modulus of the material of the first shell-shaped body; A dental device according to any one of claims 1 to 12.

14. The second type of protrusion and the shell-shaped body on which the second type of protrusion is located are of an integral structure. A dental device according to any one of claims 1 to 13.

15. the integral structure is manufactured by 3D printing; The second type of protrusion is a solid structure.

15. A dental appliance according to claim 14.

16. The second type of protrusion is connected to the shell-like body in which it is located by gluing, welding or crimping. A dental device according to any one of claims 1 to 15.

17. At least one set of dental appliances comprising the dental appliances according to any one of claims 1 to 16. Orthodontic treatment system.

18. a plurality of said dental appliances having geometries that gradually position teeth from initial positions to target orthodontic positions; 18. The orthodontic treatment system of claim 17.

19. the second type of protrusions in at least two sets of dental appliances among the plurality of dental appliances have different heights in a longitudinal direction of the teeth; 19. An orthodontic treatment system according to claim 17 or 18.

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