Shell-shaped dental appliances and shell-shaped orthodontic appliance sets

Abstract

A shell-shaped dental appliance and a shell-shaped orthodontic set comprising at least one shell-shaped dental appliance. [Solution] The shell-shaped dental appliance includes a shell-shaped body (100) having a plurality of tooth-receiving cavities, and a shield bumper (101) is provided on the shell-shaped body (100). The shield bumper (101) has a blocking portion (102) provided on the labial surface and / or buccal surface and protruding toward the distal tooth, and a contact portion (103) arranged to be connected to the blocking portion (102). When worn, the blocking portion (102) comes into contact with the orbicularis oris muscle and / or buccal muscle, and at least a portion of the force applied to the blocking portion (102) by the orbicularis oris muscle and / or buccal muscle is transmitted to the corresponding gum (300) via the contact portion (103). By providing a shield bumper (101) on the shell-shaped dental appliance, the problem of inhibition of tooth growth by the orbicularis oris muscle and / or buccal muscle during orthodontic treatment is avoided, and part of the force applied from the orbicularis oris muscle and / or buccal muscle is transmitted to the corresponding gums (300) through the contact portion, thereby increasing the holding force of the shell-shaped dental appliance against the gums (300), thereby improving the orthodontic effect and shortening the orthodontic period.

Description

[Technical field]

[0001] (CROSS REFERENCE TO RELATED APPLICATIONS) This application claims the priority benefit of Chinese patent applications No. 2021104843694 and No. 2021209295687, filed on April 30, 2021, the entire contents of which are hereby incorporated by reference into this specification.

[0002] FIELD OF THEINVENTION The present application is in the field of orthodontics, and more specifically, relates to a more suitable bracketless and unnoticeable orthodontic technology, and more particularly to a shell-shaped dental appliance and a set of shell-shaped orthodontic appliances. [Background technology]

[0003] Compared with traditional orthodontic techniques, bracket-free and invisible orthodontic techniques are chosen by more and more people due to the advantages of wearing comfort and aesthetics. However, traditional invisible orthodontics has certain limitations in early orthodontics of primary dentition, mixed dentition and permanent dentition. In addition to the problem of aligning teeth when patients are young, most patients still have problems such as the development of the maxillary and mandibular bones in the length, width and height directions, differential growth of the mandible, determination of the temporomandibular joint position related to facial neuromuscular function and occlusion relationship, completion of the development of facial soft tissues and formation of a harmonious and stable functional relationship with the jaw bone. In addition to aligning the teeth in the treatment process, functional orthodontics is also necessary.

[0004] In the case of traditional functional orthodontic appliances, the wire needs to be bent manually to make a stent, coated with self-solidifying plastic, and then barrel-polished to fit the patient's oral structure, which is labor-intensive and expensive to manufacture. When first worn, the functional orthodontic appliance is large in volume, which affects pronunciation and chewing after wearing, and it takes a long time for the patient's swallowing function to adapt. At the same time, the functional orthodontic appliance also affects the patient's oral saliva secretion and saliva flow during the wearing process, which affects the self-cleaning and remineralization of the tooth body, changes the patient's oral micro-ecosystem, and affects oral health.

[0005] Currently, in clinical practice, to address the problem that developing dentition is susceptible to abnormal perioral muscle function, patients need to wear bracketless and unnoticeable orthodontic appliances, as well as functional orthodontic appliances such as cheek shields and lip bumpers to adjust perioral muscle function. In conventional technology, patients generally need to wear bracketless and unnoticeable orthodontic appliances during the day to align the dentition, and functional orthodontic appliances at night to promote the reconstruction of alveolar bone and maxillofacial structure. However, patients who need to align their teeth generally need to wear bracketless and unnoticeable orthodontic appliances for at least 20 hours or more every day to achieve the treatment effect, and functional orthodontic appliances for at least 10 hours or more every day. As a result, conventional technology cannot simultaneously align teeth and correct myofunctional function, which lengthens the overall treatment period, increases the number of consultations, and increases the orthodontic costs for patients.

[0006] Therefore, this application provides a technical solution to solve the above problems. Summary of the Invention [Problem to be solved by the invention]

[0007] The technical problem solved by the present application is to overcome the deficiencies in the prior art, and the present application provides a novel shell-shaped dental appliance and a shell-shaped orthodontic appliance set with myofunctional correction. [Means for solving the problem]

[0008] In order to achieve the above objectives, the present application adopts the following technical solutions:

[0009] In some embodiments of the present application, a shell-shaped dental appliance is provided, the shell-shaped dental appliance includes a shell-shaped body with a plurality of tooth-receiving cavities, the shell-shaped body is provided with a shield bumper, the shield bumper includes a blocking part provided on the labial surface and / or buccal surface and protruding toward the distal teeth, and a contact part installed to be connected to the blocking part, when worn, the blocking part contacts the orbicularis oris muscle and / or buccal muscle, and at least a part of the force applied by the orbicularis oris muscle and / or buccal muscle to the blocking part is transmitted to the corresponding gum through the contact part. The contact part transmits a part of the force applied by the orbicularis oris muscle and / or buccal muscle to the corresponding gum, increasing the retention force of the shell-shaped dental appliance against the gum, and solving the problem that the shell-shaped dental appliance is easily dropped off from the teeth due to the small dentition.

[0010] In one embodiment, the tooth-receiving cavity comprises a geometric configuration that causes at least a portion of the received tooth to move from a first position to a second position.

[0011] In one embodiment, the contact portion has a structure that provides stable contact with the corresponding gum when worn.

[0012] In one embodiment, the shape of the proximal surface of the contact portion closely matches the shape of the corresponding gum, thereby providing a closer fit between the contact portion and the corresponding gum.

[0013] In one embodiment, the blocking portion is formed by a protrusion of the labial and / or buccal surface of at least one of the tooth-receiving cavities in a distal tooth direction.

[0014] In one embodiment, when worn, the inner surface of the blocking portion does not contact at least a portion of the outer surface of the tooth adjacent to the inner surface of the blocking portion.

[0015] In one embodiment, the blocking portion protrudes in the distal tooth direction and is provided on the gingiva of the labial and / or buccal surface of the shell-shaped body.

[0016] In one embodiment, the blocking portion and the contact portion are of an integral or separate structure.

[0017] In one embodiment, when the blocking portion and the contact portion are of an integral structure, the blocking portion is a hollow structure protruding in a distal tooth direction.

[0018] In one embodiment, the cross-sectional shape of the teeth of the blocking portion along the major axis is one of an ellipse, a teardrop, a polygon, or any combination of the above shapes.

[0019] In one embodiment, the blocking portion is provided with a filler therein to increase the strength of the blocking portion.

[0020] In one embodiment, when the blocking portion and the contact portion are separate structures, the blocking portion may be fixed to the shell-shaped body by any one of adhesive, riveting, and welding.

[0021] In one embodiment, when the blocking portion and the contact portion are separate structures, the materials of the blocking portion and the contact portion may be the same or different.

[0022] In one embodiment, if the materials of the blocking portion and the contact portion are the same, the thickness of the material of the blocking portion is greater than the thickness of the material of the contact portion.

[0023] In one embodiment, if the materials of the blocking portion and the contact portion are mismatched, the elastic modulus of the material of the blocking portion is greater than the elastic modulus of the material of the contact portion.

[0024] In one embodiment, the blocking portion is a solid protrusion.

[0025] In one embodiment, the maximum height of the blocking portion protruding in the distal tooth direction is 3 mm to 8 mm.

[0026] In one embodiment, the length of the blocking portion in the dental arch direction is the width of 1 to 6 teeth.

[0027] In one embodiment, the length of the blocking portion in the dental arch direction is the width of the entire dental arch.

[0028] In one embodiment, the blocking portion has at least one reinforcing member on one or more of the mesial, distal, mesial and distal surfaces.

[0029] In one embodiment, the reinforcing member and the blocking portion are integrally molded, and the reinforcing member is a hollow structure whose surface curvature exceeds that of the blocking portion.

[0030] In one embodiment, the reinforcing member and the blocking portion are separate structures, and the reinforcing member is fixed to the blocking portion.

[0031] In one embodiment, a reinforcing member is provided on the blocking portion along the gingival or mesiodistal direction.

[0032] In one embodiment, the shell-like body is further provided with a dental arch expansion device for use in combination with the blocking portion.

[0033] In one embodiment, the dental arch expansion device and the shell-like body are of an integral structure, and both ends of the dental arch expansion device are connected to the gingival or progingival portions of the lingual surfaces of the molars on both the left and right sides of the shell-like body.

[0034] In one embodiment, the dental arch expansion device and the shell-like body are separate structures, and the dental arch expansion device is removably attached to the shell-like body.

[0035] Some embodiments of the present application further provide a shell-shaped orthodontic appliance set, the shell-shaped orthodontic appliance set comprising a first shell-shaped body and a second shell-shaped body, the first shell-shaped body being any one of the above-mentioned shell-shaped dental appliances, the second shell-shaped body being provided with a plurality of tooth-receiving cavities, and the first shell-shaped body and the second shell-shaped body being used in combination.

[0036] In one embodiment, the second shell-shaped body is any one of the shell-shaped dental appliances described above.

[0037] In one embodiment, when the longitudinal positions of the teeth of the shield bumper provided on the first shell-shaped body and the shield bumper provided on the second shell-shaped body are consistent, the longitudinal lengths of the teeth of the blocking portion on the first shell-shaped body and the blocking portion on the second shell-shaped body do not exceed the jaw plane. Effect of the Invention

[0038] The shell-shaped dental appliance and shell-shaped orthodontic appliance set provided in the present application can provide at least one of the following beneficial effects: 1) The shield bumper in the shell-shaped dental appliance in the present application is provided with a blocking portion and a contact portion, which blocks contact between the orbicularis oris muscle, the buccal muscle and the corresponding dentition, thereby reducing the inhibitory effect of the buccal muscle on the lateral growth of the teeth and the inhibitory effect of the orbicularis oris muscle on the anterior growth of the teeth, stimulating the lateral or vertical growth of the teeth, and at least a portion of the force applied to the blocking portion by the orbicularis oris muscle and / or the buccal muscle is transmitted to the corresponding gum portion via the contact portion, thereby increasing the holding force of the shell-shaped dental appliance against the gums and solving the problem that the shell-shaped dental appliance is easily dropped off from the teeth when the patient's teeth are small. 2) Compared with conventional functional orthodontic appliances, the shell-shaped dental appliance of the present application is equipped with a shield bumper on the existing shell-shaped orthodontic appliance, and the two are effectively integrated, so that the shell-shaped dental appliance aligns the teeth and adjusts the oral vestibule and perioral tissues, thereby improving the patient's orthodontic comfort and shortening the orthodontic period. 3) The shell-shaped dental appliance in the present application is provided with a dental arch expansion device used in combination with a shield bumper, and the dental arch expansion device is deformed to induce buccal expansion of the maxillary palatine suture bone deposition, and the teeth in the molar region are moved buccally by the dental arch expansion device. In addition, the buccal shield bumper of the shell-shaped dental appliance uses a structure that protrudes in the distal tooth direction to provide sufficient space for the teeth to move buccally, thereby avoiding the resistance of the buccal muscle to the dental arch during dental arch expansion. 4) The shell-shaped orthodontic set of the present application simultaneously attaches shell-shaped dental appliances to the upper and lower jaws, at least one of which is provided with a shield bumper, which aligns the upper and lower jaw teeth while allowing maximum normal growth in three directions, length, width, and height, thereby reducing the number of orthodontic steps and shortening the orthodontic period. [Brief description of the drawings]

[0039] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments will be clearly and understandably described with reference to the drawings, and the above characteristics, technical features, advantages and realization forms thereof will be further explained. [Figure 1] FIG. 1 illustrates one embodiment of the shell-shaped dental appliance of the present application. [Diagram 2] FIG. 2 is a top view of the shell-shaped dental appliance of FIG. [Diagram 3] FIG. 3 illustrates another embodiment of the shell-shaped dental appliance of the present application. [Figure 4] FIG. 4 illustrates another embodiment of the shell-shaped dental appliance of the present application. [Diagram 5] FIG. 5 is a cross-sectional view taken along the direction AA in FIG. [Figure 6] FIG. 6 illustrates another embodiment of the shell-shaped dental appliance of the present application. [Figure 7] FIG. 7 illustrates another embodiment of a shell-shaped dental appliance of the present application. [Figure 8] FIG. 8 illustrates another embodiment of a shell-shaped dental appliance of the present application. [Figure 9] FIG. 9 illustrates another embodiment of a shell-shaped dental appliance of the present application. [Figure 10] FIG. 10 illustrates another embodiment of a shell-shaped dental appliance of the present application. [Figure 11] FIG. 11 is an enlarged view of region I in FIG. [Figure 12] FIG. 12 illustrates another embodiment of a shell-shaped dental appliance of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0040] In order to more clearly describe the embodiments of the present application or the technical solutions in the prior art, the specific embodiments of the present application will be described below with reference to the drawings. It is obvious that the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings and other embodiments based on these drawings without creative work.

[0041] As shown in Fig. 1 and Fig. 2, in some embodiments, the present application provides a shell-shaped dental appliance, which includes a shell-shaped body 100 with a plurality of tooth-receiving cavities, covering the entire tooth 200 from the crown to the gingival margin. The shell-shaped body 100 is provided with a shield bumper 101, which includes a contact portion 103 and a blocking portion 102 integrally formed with the shell-shaped body 100. The blocking portion 102 protrudes from the labial side, buccal side, or labial-buccal side of the shell-shaped body 100 toward the distal tooth direction, widening the labial-buccal mucosa to block the contact between the orbicularis oris muscle, the buccal muscle, or the labial-buccal muscle and the corresponding tooth, reducing the inhibitory effect of the orbicularis oris muscle, the buccal muscle, or the labial-buccal muscle on the growth of the tooth, and stimulating the lateral or longitudinal growth of the corresponding tooth. The contact part 103 is installed to be connected to the blocking part 102, and when worn, it contacts the corresponding gum 300 provided with the shield bumper 101, and the contact part 103 has a structure for stable contact with the corresponding gum 300, specifically, the surface of the contact part 103 close to the gum may be a curved structure, a flat structure, or a structure with protruding points. In one example, the surface of the contact part 103 close to the gum adopts a curved structure that is almost the same as the shape of the corresponding gum 300, and such a structure allows the contact part 103 and the corresponding gum 300 to be completely in close contact and covered, which strengthens the control force of the shell-shaped dental appliance on the corresponding gum 300 and solves the problem that the shell-shaped dental appliance is easy to fall off from the teeth, such as the baby teeth of children or the early mixed dentition of adolescents, when the patient's teeth are small. Specifically, when the shell-shaped dental appliance is worn on a patient, the blocking portion 102 blocks the growth and development inhibitory force applied to the tooth by the orbicularis oris muscle, the buccal muscle, or the labio-buccal muscle. The blocking portion 102 is installed to be connected to the contact portion 103 and transmits the pressure of a portion of the orbicularis oris muscle, the buccal muscle, or the labio-buccal muscle to the corresponding gum 300 in contact with the contact portion 103, thereby strengthening the control force on the corresponding gum 300 while the shell-shaped dental appliance is worn, making it less likely to fall off the tooth.In addition, the tooth-receiving cavity may have a function of aligning teeth, specifically, the tooth-receiving cavity has a geometric structure for moving at least some of the teeth accommodated therein from a first position to a second position, the first position may be an initial position of the teeth in any orthodontic step, and the corresponding second position is a target position of the teeth in that step, and of course, the tooth-receiving cavity may not have a function of aligning teeth.

[0042] In some embodiments, as shown in Figures 3 to 5, the blocking portion 102 is formed by protruding the labial and / or buccal surface of at least one of the tooth-receiving cavities in the distal tooth direction. In one example, the labial or buccal surface of the tooth-receiving cavity protrudes in the distal tooth direction to form the blocking portion 102, and the blocking portion 102 and the shell-shaped body 100 are integrally molded, that is, the shield bumper and the shell-shaped body are integrally molded. When the blocking portion 102 protrudes in the distal tooth direction from one or more tooth-receiving cavities, the blocking portion 102 can be selected to protrude in the distal tooth direction on either one of the two buccal surfaces or on both sides according to different treatment plans. As shown in the shell-shaped dental appliance in Fig. 3, the blocking portion 102 is formed with one or more tooth-receiving cavities each protruding in the distal tooth direction (the dotted line part is the shape when the tooth-receiving cavities do not protrude in the distal tooth direction), and after being attached to a patient, the inner surface of the blocking portion 102 does not contact the outer surface of the tooth adjacent to the inner surface of the blocking portion 102, thereby preventing the blocking portion 102 from applying unexpected force to the tooth. The blocking provided in the middle of the multiple blocking portions 102 can strengthen the strength of the buccal surface of the blocking portion 102, making the blocking portion 102 less likely to deform after being attached. As shown in the shell-shaped dental appliance of FIG. 4, the blocking portion 102 is formed with one or more tooth-receiving cavities protruding in the distal tooth direction, and similarly, after being fitted to a patient, the inner surface of the blocking portion 102 does not contact the outer surface of the tooth adjacent to the inner surface of the blocking portion 102, thereby maximally relieving the force applied to the tooth by the blocking portion 102.

[0043] As shown in Fig. 5, the shell-shaped body 100 and the shield bumper 101 are integrally molded, and the surface of the blocking part 102 adjacent to the buccal muscle can be set to a smooth curved surface, so that the patient does not feel a strong foreign body sensation after wearing it, and the patient's comfort is improved. In this embodiment, the control ability of the tooth-receiving cavity with the blocking part 102 on the corresponding tooth is not strong, and the orthodontic force of the tooth-receiving cavity in this area on the tooth is insufficient, but in the production and manufacturing process, especially when the shell-shaped dental appliance 100 is manufactured using heat press film technology, the processing difficulty is low and demolding is easier. As shown in the shell-shaped dental appliance of FIG. 6, in order to increase the control ability of the tooth-receiving cavity or shell-shaped dental appliance in the embodiment of FIG. 5 over the corresponding tooth, the blocking portion 102 may contact the crown area a (area indicated by the arrow in FIG. 6) adjacent to the blocking portion 102 of the tooth, thereby increasing the area over which the tooth-receiving cavity covers the crown of the corresponding tooth, maintaining blocking of the blocking portion 102 against the buccal muscle, and increasing the control ability of the tooth-receiving cavity or shell-shaped dental appliance over the corresponding tooth.

[0044] In some other embodiments, as shown in FIG. 7, the blocking portion 102 is provided on the gingiva of the labial and / or buccal surfaces of the shell-shaped body 100, protruding in the distal tooth direction, and covering a part of the surface of the tooth-receiving cavity adjacent to the orbicularis oris and / or buccal muscles and a part of the gingival surface. Compared with a structure in which the blocking portion 102 is directly protruding from the tooth-receiving cavity in the distal tooth direction, this structure is characterized in that the blocking portion 102 covers a larger area of ​​the tooth of the corresponding tooth-receiving cavity, and the shell-shaped dental appliance has a stronger control force on the entire dentition. The installation of the blocking portion 102 does not affect the orthodontic force of the shell-shaped dental appliance on the corresponding tooth. The blocking portion 102 and the contact portion 103 may be an integral structure or a separate structure. When the blocking portion 102 and the contact portion 103 are an integral structure, that is, the shield bumper and the shell-shaped body 100 are an integral structure. In this case, the blocking portion 102 is a hollow structure protruding in the distal tooth direction. The cross-sectional shape of the cavity tooth in the longitudinal direction is any one of ellipse, teardrop, polygon, or any combination thereof. In one embodiment of the present application, the cross-sectional shape of the cavity tooth in the longitudinal direction is ellipse, teardrop, or a combination of both, and its smooth curved structure can bring the blocking portion 102 closer to the patient's orbicularis oris muscle and / or buccal muscle, thereby reducing the patient's discomfort. At the same time, it can disperse a part of the pressure applied by the orbicularis oris muscle and / or buccal muscle, so that the pressure applied by the orbicularis oris muscle and / or buccal muscle to the blocking portion 102 is not excessively transmitted to the corresponding tooth.

[0045] A filling material for increasing the strength and / or rigidity of the blocking portion 102 may be provided inside the blocking portion 102, thereby preventing the blocking portion 102 from losing its blocking function between the orbicularis oris and / or buccal muscles and the corresponding teeth due to deformation of the blocking portion 102 caused by the orbicularis oris and / or buccal muscles applying excessive pressure to the blocking portion 102, and the installation of the filling material further ensures the strength of the blocking portion 102 and allows the corresponding teeth to have sufficient space to grow laterally or vertically. The filling material may be a glass resin material that meets oral medical standards.

[0046] In some other embodiments, when the blocking portion 102 and the contact portion 103 are separate structures, the contact portion 103 and the shell-shaped body 100 are integrally molded. The blocking portion 102 may be fixed to the shell-shaped body 100 by any one of gluing, riveting, and welding. In one example, the blocking portion 102 is fixed to the shell-shaped body 100 using an adhesive, which simplifies the manufacturing process and is favorable for mass production. When the materials of the blocking portion 102 and the contact portion 103 are the same, the rigidity of the blocking portion 102 can be increased by increasing the thickness. When the materials of the blocking portion 102 and the contact portion 103 are not the same, the rigidity of the blocking portion 102 can be increased by selecting a material having a higher elastic modulus than that of the contact portion 103, such as a metal, ceramic, or other polymer material.

[0047] In some other embodiments, as shown in FIG. 8, the maximum height L1 of the blocking portion provided on the shield bumper 101 provided on the labial side protruding in the distal tooth direction is 3 mm to 8 mm. The thickness of the blocking portion itself can be set to 2.5 mm to 3.0 mm, and the gap between the inner surface of the blocking portion close to the outer surface of the tooth and the outer surface of the corresponding tooth is set to at least 3.0 mm, with the purpose of reducing the inhibitory effect of the orbicularis oris muscle and / or the buccal muscle on tooth growth. The length of the shield bumper 101 in the dental arch direction is the width of 1 to 6 teeth or the width of the entire dental arch, and the shield bumper can be provided on the labial side, buccal side, or labial-buccal side (as shown in FIG. 9), and when provided on the buccal side, it can be provided on both sides or one side. The shield bumper 101 provided on the labial side can relieve part of the pressure of the lips on the jawbone, and at the same time, can pull the local alveolar bone periosteum and stimulate bone deposition on the labial surface of the alveolar bone. Next, by placing the shield bumper 101 on both the labial and buccal sides, the periosteum in the vestibular sulcus can be pulled, stimulating the corresponding growth and development of the alveolar bone.

[0048] In some other embodiments, at least one reinforcing member 104 is provided on one or more of the mesiotooth surface, the distal surface, the mesial surface, and the distal surface of the blocking portion 102 to increase the rigidity of the blocking portion 102. In one example, the reinforcing member 104 is provided on any surface except the distal surface to avoid contact between the reinforcing member 104 and the orbicularis oris muscle and / or the buccal muscle, and to increase the comfort of the patient when wearing the shell-shaped dental appliance. The reinforcing member 104 can be provided along the gingival-jaw direction or the mesio-distal direction. The reinforcing member 104 and the blocking portion 102 may be an integral structure or a separate structure. When the reinforcing member 104 and the blocking portion 102 are an integral structure, as shown in Figs. 10 and 11, the reinforcing member 104 is a hollow structure whose surface curvature exceeds that of the blocking portion 102, and the hollow structure can protrude outward or recess inward, and the strength of the blocking portion 102 can be increased by increasing the surface area of ​​the blocking portion 102, thereby preventing the blocking portion 102 from being deformed by the pressure applied to the orbicularis oris muscle and / or the buccal muscle. The hollow structure may be a plurality of convex or concave dot structures, or one or more convex or concave elliptical structures. The reinforcing member may also be a reinforcing rib attached to one or more surfaces of the mesiotooth surface, the distaltooth surface, the mesial surface, or the distal surface, and can similarly play a role in increasing the rigidity of the blocking portion 102. This need not be described in detail here.

[0049] In some other embodiments, as shown in the shell-shaped dental appliance in FIG. 12, the shell-shaped body 100 is provided with a dental arch expansion device 105 used in combination with the blocking part 102, the dental arch expansion device 105 and the shell-shaped body 100 are integrally structured, and both ends of the dental arch expansion device 105 are connected to the gingival or progingival parts of the lingual side of the molar regions on both the left and right sides of the first shell-shaped body 100. Alternatively, the dental arch expansion device 105 and the shell-shaped body 100 are separate structures, and the dental arch expansion device 105 is detachably attached to the shell-shaped body 100. The dental arch expansion device 105 is generally applied to a shell-shaped dental appliance worn on the upper jaw, and applies a horizontal force to one or more teeth in the molar region to retract the unclosed midline palatine suture, thereby stimulating the deposition of new bone in the bone suture, and thus stimulating the growth of the jawbone, increasing the dental arch width and improving the dental arch shape. The shield bumper eliminates a part of the reverse inhibitory action applied to the corresponding teeth by the orbicularis oris muscle and / or buccal muscle during dental arch expansion, thereby obtaining a better dental arch expansion effect. In the case of a shell-shaped dental arch expansion device without a shield bumper, the teeth are often subjected to a reverse inhibitory action by the buccal muscle during dental arch expansion, and the dental arch expansion effect is not noticeable, and the expected orthodontic effect cannot be obtained. The shell-shaped dental device of this embodiment expands the dental arch, and at the same time, by providing a shield bumper structure on the shell-shaped orthodontic appliance, it is possible to reduce the pressure applied to the corresponding teeth by the buccal muscle and to make the dental arch expansion effect clear, which is of great significance.

[0050] Some embodiments of the present application further provide a shell-shaped orthodontic set, the shell-shaped orthodontic set comprising a first shell-shaped body and a second shell-shaped body, the first shell-shaped body being the shell-shaped dental appliance in any one of the above embodiments, the second shell-shaped body being provided with a plurality of tooth-receiving cavities, and the first shell-shaped body and the second shell-shaped body being used in combination. The second shell-shaped body can also be installed in the shell-shaped dental appliance in any one of the above embodiments. The first shell-shaped body and the second shell-shaped body can both be provided with shield bumpers on the labial side, the buccal side, and the labial-buccal side. When the positions of the shield bumper provided on the first shell-shaped body and the shield bumper provided on the second shell-shaped body in the longitudinal direction of the teeth are consistent, the length of the blocking part of the first shell-shaped body and the blocking part of the second shell-shaped body in the longitudinal direction of the teeth does not exceed the jaw plane. The purpose is to ensure that, during the process of attaching the first shell-shaped body and the second shell-shaped body to the patient, the blocking portion provided on the first shell-shaped body and the blocking portion provided on the second shell-shaped body do not interfere with each other, thereby improving the accuracy of correction.

[0051] It should be noted that the above examples can be freely combined as necessary. The above description is merely a preferred embodiment of the present application. Those skilled in the art can make some improvements and modifications without departing from the principles of the present application, and these improvements and modifications should also be considered within the scope of protection of the present application.

Claims

1. 1. A shell-shaped dental appliance comprising a shell-shaped body defining a plurality of tooth-receiving cavities, A shield bumper is provided on the shell-shaped main body, and the shield bumper includes a blocking portion provided on the labial surface and / or the buccal surface and protruding toward the distal teeth, and a contact portion installed so as to be connected to the blocking portion, and when the shield bumper is attached, the blocking portion contacts the orbicularis oris muscle and / or the buccal muscle, and at least a part of the force applied by the orbicularis oris muscle and / or the buccal muscle to the blocking portion is transmitted to the corresponding gum via the contact portion, The blocking portion covers the side surface of the tooth so as not to come into contact with the tooth.

1. A shell-shaped dental instrument comprising:

2. the tooth-receiving cavity includes a geometric configuration that moves at least a portion of the received tooth from a first position to a second position.

2. The dental shell of claim 1.

3. The contact portion has a structure for stably contacting the corresponding gum when worn.

2. The dental shell of claim 1.

4. the shape of the proximal tooth surface of the contact portion substantially corresponds to the shape of the corresponding gingiva; 4. The dental shell of claim 3.

5. The blocking portion is formed by protruding a labial surface and / or a buccal surface of at least one of the tooth-receiving cavities in a distal tooth direction.

2. The dental shell of claim 1.

6. The blocking portion protrudes toward the distal tooth direction and is provided on the gingiva of the labial side and / or the buccal side of the shell-shaped body.

2. The dental shell of claim 1.

7. The blocking portion and the contact portion are integral or separate structures.

7. A shell-shaped dental instrument as claimed in claim 6.

8. When the blocking portion and the contact portion are integral with each other, the blocking portion has a hollow structure protruding toward the distal tooth direction.

8. A shell-shaped dental instrument as claimed in claim 7.

9. The cross-sectional shape of the teeth of the blocking portion in the long axis direction is one of an ellipse, a teardrop, a polygon, or a combination of the above shapes.

9. The dental shell of claim 8.

10. A filler is provided inside the blocking portion to increase the strength of the blocking portion.

10. The shell-shaped dental instrument of claim 9.

11. When the blocking portion and the contact portion are separate structures, the blocking portion may be fixed to the shell-shaped body by any one of adhesive, riveting, and welding.

8. A shell-shaped dental instrument as claimed in claim 7.

12. When the blocking portion and the contact portion are separate structures, the materials of the blocking portion and the contact portion may be the same or different.

8. A shell-shaped dental instrument as claimed in claim 7.

13. When the materials of the blocking portion and the contact portion are the same, the thickness of the material of the blocking portion is greater than the thickness of the material of the contact portion.

13. The shell-shaped dental instrument of claim 12.

14. When the materials of the blocking portion and the contact portion do not match, the elastic modulus of the material of the blocking portion is greater than the elastic modulus of the material of the contact portion.

13. The shell-shaped dental instrument of claim 12.

15. The blocking portion is a solid protrusion.

13. The shell-shaped dental instrument of claim 12.

16. The maximum height of the blocking portion protruding toward the distal tooth direction is 3 mm to 8 mm.

2. The dental shell of claim 1.

17. The length of the blocking portion in the dental arch direction is 1 to 6 tooth widths.

2. The dental shell of claim 1.

18. The length of the blocking portion in the dental arch direction is the width of the entire dental arch.

2. The dental shell of claim 1.

19. At least one reinforcing member is provided on one or more of the mesial surface, the distal surface, the mesial surface, and the distal surface of the blocking portion.

2. The dental shell of claim 1.

20. The reinforcing member and the blocking portion are integrally molded, and the reinforcing member has a hollow structure whose surface curvature exceeds the surface curvature of the blocking portion.

20. The shell-shaped dental instrument of claim 19.

21. The reinforcing member and the blocking portion are separate structures, and the reinforcing member is fixed to the blocking portion.

20. The shell-shaped dental instrument of claim 19.

22. The reinforcing member is provided on the blocking portion along the gingival-jaw direction or the mesio-distal direction. A shell-shaped dental instrument according to any one of claims 19 to 21.

23. The shell-shaped body is further provided with a dental arch expansion device that is used in combination with the blocking portion.

2. The dental shell of claim 1.

24. The dental arch expansion device and the shell-shaped body are integrally constructed, and both ends of the dental arch expansion device are connected to the gingival margin or the proximal gingival margin of the lingual side of the molar portion on both the left and right sides of the shell-shaped body.

24. The shell-shaped dental instrument of claim 23.

25. The dental arch expansion device and the shell-shaped body are separate structures, and the dental arch expansion device is removably attached to the shell-shaped body.

24. The shell-shaped dental instrument of claim 23.

26. A set of shell-shaped orthodontic appliances comprising a first shell-shaped body and a second shell-shaped body, The first shell-shaped body is a shell-shaped dental instrument according to any one of claims 1 to 25, and the second shell-shaped body is provided with a plurality of tooth-receiving cavities, and the first shell-shaped body and the second shell-shaped body are used in combination. A shell-shaped orthodontic set.

27. The second shell-shaped body is a shell-shaped dental instrument according to any one of claims 1 to 26.

27. The set of shell-shaped orthodontic appliances of claim 26.

28. When the positions of the teeth of the shield bumper provided on the first shell-shaped body and the shield bumper provided on the second shell-shaped body in the longitudinal direction are consistent, the lengths of the teeth of the blocking portion on the first shell-shaped body and the blocking portion on the second shell-shaped body in the longitudinal direction do not exceed the jaw plane, 28. The set of shell-shaped orthodontic appliances of claim 27.

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