阅读说明：本技术 壳状牙科器械、牙齿矫治系统及其设计方法和制备方法 (Shell-shaped dental appliance, tooth correcting system and design method and preparation method thereof ) 是由 赵晓磊 姚峻峰 于 2021-01-30 设计创作，主要内容包括：本发明提供一种壳状牙科器械,包括至少部分容纳上颌牙齿的第一壳状本体和至少部分容纳下颌牙齿的第二壳状本体,所述第一壳状本体在尖牙至磨牙之间的区域内向对颌方向凸出设有引导调整上下颌位关系的第一凸起部,所述第二壳状本体在尖牙至磨牙之间的区域内向对颌方向凸出设有配合调整上下颌位关系的第二凸起部；所述第一凸起部上设有第一加强构件,所述第二凸起部上设有第二加强构件,所述第一加强构件外表面与第二加强构件外表面具有凹凸匹配的结构；所述第一壳状本体与所述第二壳状本体相互作用时,所述第一加强构件与所述第二加强构件相对滑动导引上下颌至预设的咬合位置,本发明还提供了一种牙齿矫治系统、牙科器械设计方法和制备方法。(The invention provides a shell-shaped dental instrument, which comprises a first shell-shaped body and a second shell-shaped body, wherein the first shell-shaped body at least partially contains upper jaw teeth and the second shell-shaped body at least partially contains lower jaw teeth, the first shell-shaped body is provided with a first bulge part which guides and adjusts the relation between the upper jaw position and the lower jaw position in a protruding manner towards the jaw direction in a region between canine teeth and molar teeth, and the second shell-shaped body is provided with a second bulge part which is matched with the regulation between the upper jaw position and the lower jaw position in a protruding manner towards the jaw direction in a region between canine teeth and molar teeth; the first bulge part is provided with a first reinforcing member, the second bulge part is provided with a second reinforcing member, and the outer surface of the first reinforcing member and the outer surface of the second reinforcing member are of a concave-convex matching structure; when the first shell-shaped body and the second shell-shaped body interact, the first reinforcing member and the second reinforcing member slide relatively to guide the upper jaw and the lower jaw to a preset occlusion position.)

1. A shell-like dental instrument, characterized by: the dental implant comprises a first shell-shaped body and a second shell-shaped body, wherein the first shell-shaped body at least partially accommodates upper jaw teeth and the second shell-shaped body at least partially accommodates lower jaw teeth, a first bulge part for guiding and adjusting the relation between the upper jaw position and the lower jaw position is arranged in a protruding manner towards the jaw direction in a region between the canine teeth and the molar teeth of the first shell-shaped body, and a second bulge part for matching and adjusting the relation between the upper jaw position and the lower jaw position is arranged in a protruding manner towards the jaw direction in a region between the canine teeth and the molar teeth of the second shell-shaped; the first bulge part is provided with a first reinforcing member, the second bulge part is provided with a second reinforcing member, and the outer surface of the first reinforcing member and the outer surface of the second reinforcing member are of a concave-convex matching structure; when the first shell-shaped body and the second shell-shaped body interact, the first reinforcing member and the second reinforcing member slide relatively to guide the upper jaw and the lower jaw to a preset occlusion position.

2. A shell-like dental instrument as in claim 1, wherein: the first convex portion is provided with a first outer surface at a mesial surface or a distal surface, and the second convex portion is provided with a second outer surface at a mesial surface or a distal surface, and at the same time, the first reinforcing member is provided on the first outer surface, and the second reinforcing member is provided on the second outer surface.

3. A shell-like dental instrument as in claim 2, wherein: when the first shell-shaped body interacts with the second shell-shaped body, the first reinforcing member and the second reinforcing member are located between the first boss and the second boss, and meanwhile, the outer surface of the first reinforcing member and the outer surface of the second reinforcing member contact each other.

4. A shell-like dental instrument as in claim 1, wherein: when the first shell-shaped body interacts with the second shell-shaped body, the first protruding part guides the second protruding part to move towards the mesial or distal direction, and meanwhile, the second protruding part moves to a preset position to enable the first protruding part to be stably contacted with an occlusal surface on the second shell-shaped body.

5. A shell-like dental instrument as in claim 1, wherein: when the first shell-shaped body and the second shell-shaped body interact, the first reinforcing member makes reciprocating linear sliding in a given direction by taking the second reinforcing member as a reference.

6. A shell-like dental instrument as in claim 5, wherein: the line is parallel to the first outer surface of the first boss and the second outer surface of the second boss.

7. A shell-like dental instrument as in claim 1, wherein: the first stiffening member includes a convex geometry on an outer surface thereof and the second stiffening member forms a concave geometry on an outer surface thereof that mates with the convex geometry on the oppositely disposed outer surface of the first stiffening member.

8. A shell-like dental instrument as in claim 1, wherein: the second reinforcement member includes a convex geometry on an outer surface thereof and the first reinforcement member forms a concave geometry on an outer surface thereof that mates with the convex geometry on the oppositely disposed first reinforcement member.

9. A shell-like dental instrument according to claim 7 or 8, wherein: the surfaces of the convex geometry and the concave geometry are curved.

10. A shell-like dental instrument according to claim 7 or 8, wherein: the convex geometry and the concave geometry are polygonal in cross section in the horizontal direction.

11. A shell-like dental instrument according to claim 7 or 8, wherein: the maximum width of the cross-section of the convex geometry in the coronal plane is less than the minimum width of the cross-section of the concave geometry in the coronal plane.

12. A shell-like dental instrument as in claim 1, wherein: the first reinforcing member and the first boss are integrally formed or each independently formed; the second reinforcing member and the second boss are integrally formed or each independently formed.

13. A shell-like dental instrument as in claim 12, wherein: when the first stiffening member is integrally formed with the first boss, the wall thickness of the first stiffening member is greater than or equal to the wall thickness of the first boss; when the second reinforcement member is integrally formed with the second boss, the wall thickness of the second reinforcement member is greater than or equal to the wall thickness of the second boss.

14. A shell-like dental instrument as in claim 12, wherein: when the first reinforcing member and the first boss are each independently molded, the rigidity of the first reinforcing member is greater than or equal to the rigidity of the first boss; when the second reinforcing member and the second boss are each independently molded, the rigidity of the second reinforcing member is greater than or equal to the rigidity of the second boss.

15. A shell-like dental instrument as in claim 12, wherein: the first reinforcing member and the first boss are arranged to be in non-detachable fixed connection or detachable fixed connection; the second reinforcing member and the second boss are configured to be either non-detachably fixedly connected or detachably fixedly connected.

16. A shell-like dental instrument as in claim 15, wherein: the non-detachable fixed connection is at least one of bonding fixed connection, welding fixed connection and riveting fixed connection.

17. A shell-like dental instrument as in claim 1, wherein: the first boss extends from an inner surface of an interval from a buccal side of the first shell-shaped body to a lingual side of the first shell-shaped body; the second reinforcing member extends from a buccal side of the second shell-like body to an inner surface of a region of the lingual side of the second shell-like body.

18. A shell-like dental instrument as in claim 17, wherein: the surface extension includes: any of extending from the buccal surface, extending from the occlusal surface, extending from the lingual surface, extending from the buccal surface and the occlusal surface, extending from the lingual surface and the occlusal surface, extending from the buccal surface and the lingual surface and the occlusal surface.

19. A shell-like dental instrument as in claim 1, wherein: at least one reinforcing ridge is provided on at least one of the buccal, lingual, mesial, and distal surfaces of the first and/or second bosses.

20. A shell-like dental instrument as in claim 19, wherein: the reinforcing ridge is integrally formed with the first boss, and the reinforcing ridge is integrally formed with the second boss.

21. A shell-like dental instrument as in claim 20, wherein: the reinforcing ridge is formed by a convex or concave buccal side, lingual side, mesial side, distal side.

22. A shell-like dental instrument as in claim 20, wherein: when the reinforcing ridge is disposed on the mesial or distal surface of the convex portion, the outer surface curvature of the reinforcing ridge is less than or equal to the outer surface curvature of the reinforcing member.

23. A dental appliance system comprising a plurality of sets of shell-like dental appliances, characterized in that: the plurality of sets of shell-shaped dental instruments comprises at least one set of shell-shaped dental instruments according to any one of claims 1 to 22.

24. The dental appliance system of claim 23, wherein: the height of the first protruding part protruding towards the opposite jaw direction and the height of the second protruding part protruding towards the opposite jaw direction, which are arranged on the shell-shaped dental appliance corresponding to different correction stages, are set in a correlated manner with the corresponding different correction stages.

25. The dental appliance system of claim 23, wherein: the mechanical parameters of the first reinforcing member of the first lug boss and the mechanical parameters of the second reinforcing member of the second lug boss which are arranged on the plurality of groups of shell-shaped dental instruments are set according to different correction target parameters correspondingly set in different correction stages.

26. The dental appliance system of claim 25, wherein: the change of the mechanical parameter comprises: a change in at least one of strength, stiffness, rigidity, elasticity characteristics.

27. A method of designing a shell-like dental instrument, comprising:

acquiring a first initial dental digital model;

designing a first bulge model in the region between canine teeth and molar teeth of the first initial dental digital model in the opposite jaw direction, wherein designing a first reinforcing member model on the mesial surface or distal surface of the first bulge, and specifically acquiring characteristic information of the first bulge and the first reinforcing member respectively; the characteristic information of the first convex part comprises the size and the preset position of the first convex part, and the characteristic information of the first reinforcing member comprises the size, the shape and the preset position of the first reinforcing member;

generating a first dental digital model having a first projection and a first reinforcement member based on the first initial dental digital model, the first projection model, and a first reinforcement member model;

acquiring a second initial dental digital model;

designing a second bulge model in the region between the canine teeth and the molar teeth of the second initial dental digital model in the opposite jaw direction, wherein designing a second reinforcing member model on the mesial surface or the distal surface of the second bulge model specifically comprises acquiring characteristic information of the second bulge model and the second reinforcing member model; the second boss feature information comprises the size and the preset position of the second boss, and the feature information of the second reinforcing member comprises the size, the shape and the preset position of the second reinforcing member;

generating a second dental digital model having a second projection and a second reinforcement member based on the second initial dental digital model, the second projection model, and a second reinforcement member model;

designing a first shell-shaped body and a second shell-shaped body by utilizing the first dental digital model and the second dental digital model;

wherein the first shell-like body and the second shell-like body are a first shell-like body at least partially accommodating maxillary teeth and a second shell-like body at least partially accommodating mandibular teeth as described in claims 1 to 22, respectively;

when the first shell-shaped body and the second shell-shaped body interact, the outer surface of the first reinforcing member is matched with the outer surface of the second reinforcing member in a concave-convex mode, and the first reinforcing member and the second reinforcing member slidably guide the upper jaw and the lower jaw to a preset occlusion position.

28. A method of making a shell-like dental instrument, comprising: the shell-shaped dental instrument is manufactured by a hot-pressing film forming process based on the first dental digital model and the second dental digital model designed by the design method according to claim 27.

29. A method of making a shell-like dental instrument, comprising: the shell-shaped dental instrument is directly prepared by additive manufacturing based on the first shell-shaped body and the second shell-shaped body designed by the design method of claim 27.

30. A method of designing a shell-like dental instrument, comprising:

acquiring a first initial dental digital model;

designing a first bulge model in the opposite jaw direction in the region between the canine teeth and the molar teeth of the first initial dental digital model, and specifically acquiring characteristic information of the first bulge; the characteristic information of the first convex part comprises the size and the preset position of the first convex part;

generating a first dental digital model having first projections based on the first initial dental digital model and the first projection model;

acquiring a second initial dental digital model;

designing a second bulge model in the opposite jaw direction in the region between the canine teeth and the molar teeth of the second initial dental digital model, and specifically acquiring characteristic information of the second bulge; the second boss feature information comprises the size and the preset position of the second boss;

generating a second dental digital model having a second projection based on the second initial dental digital model and the second projection model;

designing a first shell-shaped body and a second shell-shaped body by utilizing the first dental digital model and the second dental digital model; a first reinforcing member is provided on a mesial surface or distal surface of the first boss portion of the first shell-like body, and a second reinforcing member is provided on a mesial surface or distal surface of the second boss portion of the second shell-like body; the first bulge part is fixedly connected with the first reinforcing member, and the second bulge part is fixedly connected with the second reinforcing member; wherein the content of the first and second substances,

the first shell-like body and the first stiffening member and the second shell-like body and the second stiffening member are respectively a first shell-like body at least partially accommodating maxillary teeth and a second shell-like body at least partially accommodating mandibular teeth as claimed in claims 1 to 22; when the first shell-shaped body and the second shell-shaped body interact, the outer surface of the first reinforcing member is matched with the outer surface of the second reinforcing member in a concave-convex mode, and the outer surface of the first reinforcing member and the outer surface of the second reinforcing member slide relatively to guide the upper jaw and the lower jaw to a preset occlusion position.

Technical Field

The invention belongs to the technical field of dental orthodontics, and particularly relates to a dental invisible orthodontic technology, in particular to a shell-shaped dental appliance, a dental correcting system, a dental appliance design method and a dental appliance preparation method.

Background

At present, in the technical field of orthodontic treatment, functional dental treatment is a conventional treatment means for malocclusion symptoms in the deciduous and replacement phases of children and juveniles. The double jaw plate (Twin-Block) correcting technology is a conventional treatment means, and compared with the flat guide effect of a traditional functional correcting device, the double jaw plate correcting technology transmits certain occlusal force to tooth rows and jaws through two raised solid jaw pads, so that the aim of adjusting the relative positions of upper and lower jaws is fulfilled.

Since the development of invisible dental appliances, they have been selected by more and more people because of their advantages of comfortable wearing, convenient taking and good appearance. With the increasing development of invisible correction technology, functional invisible correction appears in the visual field of people, such as the emergence of invisible Twin-Block corrector. The invisible Twin-Block appliance guides the mandible to stretch forwards through the near and far inclined planes of the two raised jaw pads when a patient bites. The trans-invisible Twin-Block appliance guides mandibular retraction through the mesial and distal slopes of the two raised jaw pads when the patient bites.

At present, the ware is rescued to current stealthy Twin-Block is the film pressing shaping mostly, and protruding jaw pad is the cavity structure mostly, like this, at the in-process that the patient used, on the one hand, can lead to two jaw pads after a lot of interlocks, because of the deformation takes place for rigidity is not enough, if the patient continues to use stealthy Twin-Block that has deformed and rescues the ware and can lead to: (1) the correcting force is not enough, the preset occlusion position cannot be reached, and the subsequent correcting step cannot be normally carried out; (2) the direction of the intended force can be altered and the undesired force causes the tooth to move in an undesired direction, eventually destroying the overall plan of correction. On the other hand, the raised jaw pads with two cavity structures may be directly bitten by a patient in the using process and cannot be used continuously, and at this time, a new film needs to be pressed to manufacture the invisible appliance required by the patient in the step, so that the correction cost is increased and the treatment period is prolonged, and meanwhile, during the period that the patient waits for the manufacture of a new invisible appliance, due to the interruption of treatment, the teeth are not restrained by due correction force and can be undesirably moved, and the later invisible appliance cannot be matched with the teeth which are moved, so that the correction restart can be caused finally. Furthermore, in view of the unexpected and unexpected force generation, during the use, the jaw cushions slide in the bucco-lingual direction, and the upper and lower jaws cannot reach the preset occlusion position precisely, which may cause the deviated jaw problem.

Therefore, the research on the dental appliance which has the characteristics of comfort and convenience of the invisible appliance and does not reduce the correction strength of the functional correction in the functional invisible appliance has great significance.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a shell-shaped dental appliance and a tooth correcting system which have the advantages that a jaw pad is not easy to deform and the correcting precision is high, and a design method and a preparation method of the shell-shaped dental appliance.

The invention solves the technical problems through the following technical scheme:

a shell-shaped dental instrument comprises a first shell-shaped body and a second shell-shaped body, wherein the first shell-shaped body at least partially accommodates upper jaw teeth, the second shell-shaped body at least partially accommodates lower jaw teeth, a first protruding part for guiding and adjusting the relation between the upper jaw position and the lower jaw position is protruded towards the jaw direction in the region between the canine teeth and the molar teeth, and a second protruding part for matching and adjusting the relation between the upper jaw position and the lower jaw position is protruded towards the jaw direction in the region between the canine teeth and the molar teeth; the first bulge part is provided with a first reinforcing member, the second bulge part is provided with a second reinforcing member, and the outer surface of the first reinforcing member and the outer surface of the second reinforcing member are of concave-convex matching structures; when the first shell-shaped body and the second shell-shaped body interact, the first reinforcing member and the second reinforcing member slide relatively to guide the upper jaw and the lower jaw to a preset occlusion position. The concave-convex matching structures of the first reinforcing member and the second reinforcing member can not only increase the contact rigidity of the first reinforcing member and the second reinforcing member by increasing the contact area of the first reinforcing member and the second reinforcing member, but also can mutually slide and accurately guide the upper jaw and the lower jaw to a preset occlusion position, so that unexpected deviation in the bucco-lingual direction is avoided.

Further, the first boss portion is provided with a first outer surface at a mesial or distal surface, and the second boss portion is provided with a second outer surface at a mesial or distal surface, while the first reinforcing member is provided on the first outer surface and the second reinforcing member is provided on the second outer surface.

Further, when the first shell-shaped body interacts with the second shell-shaped body, the first reinforcing member and the second reinforcing member are located between the first boss portion and the second boss portion, and at the same time, the first reinforcing member outer surface and the second reinforcing member outer surface contact each other.

Further, when the first shell-shaped body interacts with the second shell-shaped body, the first protruding portion guides the second protruding portion to move towards the mesial or distal direction, and meanwhile, the second protruding portion moves to a preset position to enable the first protruding portion to be in stable contact with the occlusal surface of the second shell-shaped body.

Further, when the first shell-shaped body interacts with the second shell-shaped body, the first reinforcing member linearly slides back and forth in a given direction with reference to the second reinforcing member.

Further, the straight line is parallel to the first outer surface of the first boss and the second outer surface of the second boss.

Further, the first reinforcement member includes a convex geometry on an outer surface thereof, and the second reinforcement member includes a concave geometry on an outer surface thereof that mates with the convex geometry on the oppositely disposed first reinforcement member outer surface.

Further, the second reinforcing member includes a convex geometry on an outer surface thereof, and the first reinforcing member has a concave geometry formed on an outer surface thereof that matches the convex geometry of the oppositely disposed first reinforcing member. The convex geometry and the concave geometry can not only increase the rigidity of the first reinforcing member and the second reinforcing member by increasing the surface area of the first reinforcing member and the second reinforcing member, but also improve the contact stability of the first lug boss and the second lug boss, ensure that stable correction force is provided in the correction process, and further improve the correction effect.

Further, the surfaces of the convex geometry and the concave geometry are curved.

Further, the cross-section of the convex geometry and the concave geometry in the horizontal direction is polygonal.

Further, the maximum width of the cross-section of the convex geometry in the coronal plane is smaller than the minimum width of the cross-section of the concave geometry in the coronal plane. The small gap exists between the convex geometric shape and the concave geometric shape, so that the relative sliding between the first reinforcing member and the second reinforcing member can be smoother, the friction between the first reinforcing member and the second reinforcing member is reduced, and the wear resistance of the reinforcing member is improved.

Further, the first reinforcing member and the first boss are integrally formed or each independently formed; the second reinforcing member and the second protruding portion are integrally formed or independently formed, the process is reduced through the integrally formed design, the process machining efficiency is improved, and the connection stability can be guaranteed through the integrally formed design. Through the independently fashioned components of a whole that can function independently design can nimble select first reinforcement member with first bellying, not only improved first reinforcement member with the adaptability between the first bellying has also improved flexibility and the suitability of correcting simultaneously.

Further, when the first reinforcement member is integrally formed with the first boss, a wall thickness of the first reinforcement member is greater than or equal to a wall thickness of the first boss; when the second reinforcement member is integrally formed with the second boss, the wall thickness of the second reinforcement member is greater than or equal to the wall thickness of the second boss. Likewise, the stiffness of the first and second strength members may be increased by increasing the wall thickness while also increasing the wear resistance.

Further, when the first reinforcing member and the first boss portion are each independently molded, the rigidity of the first reinforcing member is greater than or equal to the rigidity of the first boss portion; when the second reinforcing member and the second boss are each independently molded, the rigidity of the second reinforcing member is greater than or equal to the rigidity of the second boss.

Further, the first reinforcing member and the first boss portion are arranged to be non-detachably fixedly connected or detachably fixedly connected; the second reinforcing member and the second boss are configured to be either non-detachably fixedly connected or detachably fixedly connected. The detachable fixed connection can replace different reinforcing members according to different correction requirements, and more different correction schemes can be solved.

Further, the non-detachable fixed connection is at least one of an adhesive fixed connection, a welding fixed connection and a riveting fixed connection.

Further, the first boss extends from an inner surface of an interval from a buccal side of the first shell-shaped body to a lingual side of the first shell-shaped body; the second reinforcing member extends from a buccal side of the second shell-like body to an inner surface of a region of the lingual side of the second shell-like body.

Further, the first boss and the second boss each extending from an inner surface of an interval from a buccal side of the shell-shaped body to a lingual side of the shell-shaped body comprise: any of extending from the buccal surface, extending from the occlusal surface, extending from the lingual surface, extending from the buccal surface and the occlusal surface, extending from the lingual surface and the occlusal surface, extending from the buccal surface and the lingual surface and the occlusal surface.

Further, at least one reinforcing ridge is arranged on at least one of the buccal side, lingual side, mesial side and distal side of the first convex part and/or the second convex part.

Further, the reinforcing ridge and the first boss are integrally formed, and the reinforcing ridge and the second boss are integrally formed.

Further, the reinforcing crest is formed by the buccal side, lingual side, mesial side, distal side being convex or concave. Likewise, the formation of the reinforcing ridges can increase the surface area of the projections and thus increase the stiffness of the projections.

Further, when the reinforcing ridge is disposed on the mesial or distal surface of the convex portion, the outer surface curvature of the reinforcing ridge is less than or equal to the outer surface curvature of the reinforcing member. The purpose is that the reinforcing ridge does not affect the stable contact of the first reinforcing member and the second reinforcing member and does not change the size of the gap between the first reinforcing member and the second reinforcing member.

The invention also provides a dental appliance system comprising a plurality of sets of shell-like dental appliances, wherein the plurality of sets of shell-like dental appliances comprise at least one set of shell-like dental appliances as described above.

Furthermore, the height of the first protruding part protruding towards the opposite jaw direction and the height of the second protruding part protruding towards the opposite jaw direction, which are arranged on the shell-shaped dental appliance corresponding to different correction stages, are set in a way of being related to the correction stages.

Further, the mechanical parameters of the first reinforcing member of the first protruding portion and the mechanical parameters of the second reinforcing member of the second protruding portion, which are set on different groups of shell-shaped dental instruments, are corrected according to different correction target parameters correspondingly set in different correction stages.

Further, the changing of the mechanical parameter includes: change of at least one parameter of strength, hardness, stiffness, elasticity characteristics.

Compared with the prior art, the shell-shaped dental apparatus and the tooth correcting system provided by the invention have the advantages that the reinforcing members which are matched with each other are arranged on the mesial surface and the distal surface of the shell-shaped dental apparatus, wherein the protrusions of the shell-shaped dental apparatus are in mutual contact and slide, so that the rigidity of the protrusions is enhanced, meanwhile, the reinforcing members have a sliding guide function, the unexpected deviation phenomenon in the bucco-lingual direction when the protrusions slide and guide the lower jaw forwards or retracts is greatly reduced or even avoided, and the upper jaw and the lower jaw are accurately guided to the preset occlusion position when the first reinforcing member and the second reinforcing member slide relatively. The invention can open the occlusion, can accurately induce the upper and lower jaws to reach the correct occlusion position without sliding in the bucco-lingual direction, can specifically level the spee curve and reestablish the posterior occlusal butt joint, and the reinforcing member can improve the rigidity and/or hardness of the convex part, can prevent the first convex part and the second convex part from deforming and abrading in the occlusion process, thereby achieving better treatment effect.

The invention also provides a design method of the shell-shaped dental instrument, which comprises the following steps:

acquiring a first initial dental digital model;

designing a first bulge model towards the opposite jaw direction in a region between canine teeth and molar teeth of the first initial dental digital model, wherein designing a first reinforcing member model on a mesial surface or a distal surface of the first bulge model specifically comprises acquiring characteristic information of the first bulge model and the first reinforcing member; the characteristic information of the first convex part comprises the size and the preset position of the first convex part, and the characteristic information of the first reinforcing member comprises the size, the shape and the preset position of the first reinforcing member;

generating a first dental digital model having a first projection and a first reinforcement member based on the first initial dental digital model, the first projection model, and a first reinforcement member model;

acquiring a second initial dental digital model;

designing a second bulge model in the region between the canine teeth and the molar teeth of the second initial dental digital model towards the opposite jaw direction, wherein designing a second reinforcing member model on the mesial surface or the distal surface of the second bulge model specifically comprises acquiring characteristic information of the second bulge model and the second reinforcing member model; the second boss feature information comprises the size and the preset position of the second boss, and the feature information of the second reinforcing member comprises the size, the shape and the preset position of the second reinforcing member;

generating a second dental digital model having a second projection and a second reinforcement member based on the second initial dental digital model, the second projection model, and a second reinforcement member model;

designing a first shell-shaped body and a second shell-shaped body by utilizing the first dental digital model and the second dental digital model;

the first shell-shaped body and the second shell-shaped body are respectively the first shell-shaped body which at least partially accommodates maxillary teeth and the second shell-shaped body which at least partially accommodates mandibular teeth;

when the first shell-shaped body and the second shell-shaped body interact, the outer surface of the first reinforcing member is matched with the outer surface of the second reinforcing member in a concave-convex mode, and the first reinforcing member and the second reinforcing member slidably guide the upper jaw and the lower jaw to a preset occlusion position.

The invention also provides a preparation method of the shell-shaped dental instrument, which comprises the following steps: based on the first dental digital model and the second dental digital model designed by the design method, the shell-shaped dental instrument is prepared by adopting a hot-pressing film forming process.

The present invention also provides another method for manufacturing a shell-shaped dental instrument, comprising: the shell-shaped dental instrument is directly prepared by an additive manufacturing method based on the first shell-shaped body and the second shell-shaped body designed by the design method.

The invention also provides another design method of the shell-shaped dental instrument, which comprises the following steps:

acquiring a first initial dental digital model;

designing a first bulge model in the region between the canine teeth and the molar teeth of the first initial dental digital model towards the opposite jaw direction, and specifically acquiring characteristic information of the first bulge; the characteristic information of the first convex part comprises the size and the preset position of the first convex part;

generating a first dental digital model having a first protrusion based on the first initial dental digital model and the first protrusion model;

acquiring a second initial dental digital model;

designing a second bulge model in the region between the canine teeth and the molar teeth of the second initial dental digital model towards the opposite jaw direction, and specifically acquiring characteristic information of the second bulge; the second boss characteristic information includes a size and a preset position of the second boss;

generating a second dental digital model having a second projection based on the second initial dental digital model and the second projection model;

designing a first shell-shaped body and a second shell-shaped body by utilizing the first dental digital model and the second dental digital model; a first reinforcing member is provided on a mesial surface or distal surface of the first boss portion of the first shell-shaped body, and a second reinforcing member is provided on a mesial surface or distal surface of the second boss portion of the second shell-shaped body; the first bulge part is fixedly connected with the first reinforcing member, and the second bulge part is fixedly connected with the second reinforcing member; wherein the content of the first and second substances,

the first shell-like body and the first reinforcing member and the second shell-like body and the second reinforcing member are respectively the first shell-like body at least partially accommodating maxillary teeth and the second shell-like body at least partially accommodating mandibular teeth as described above; when the first shell-shaped body and the second shell-shaped body interact, the outer surface of the first reinforcing member is matched with the outer surface of the second reinforcing member in a concave-convex mode, and the outer surface of the first reinforcing member and the outer surface of the second reinforcing member slide relatively to guide the upper jaw and the lower jaw to a preset occlusion position.

The shell-shaped dental appliance, the tooth correcting system, the dental appliance design method and the preparation method provided by the invention can bring at least one of the following beneficial effects: the rigidity and/or hardness of the convex part are improved, and the upper jaw and the lower jaw can be accurately guided to the preset occlusion position.

Drawings

The foregoing features, technical features, advantages and embodiments are further described in the following detailed description of the preferred embodiments, which is to be read in connection with the accompanying drawings.

FIG. 1 is a schematic view of a shell-like dental implement according to a first embodiment of the disclosure;

FIG. 2 is a schematic view of the dental instrument of FIG. 1 showing the first shell body and the second shell body in an occluded relationship to one another;

FIG. 3 is a schematic view of the first and second bosses of the dental instrument of FIG. 1 in a relative relationship during occlusion;

fig. 4 is a schematic view of an alternative of the concavo-convex matching structure of the first reinforcing member and the second reinforcing member according to the present disclosure.

FIGS. 5 and 6 are schematic views of a boss according to various embodiments of the present disclosure;

FIG. 7 is a schematic view of the different bosses of FIGS. 5 and 6 mating with one another;

FIG. 8 is a schematic view of a projection having a reinforcing ridge in accordance with the present disclosure;

FIG. 9 is a schematic illustration of an upper jaw having a first raised portion and a first reinforcing member and a lower jaw having a second raised portion and a second reinforcing member in accordance with the present disclosure;

FIG. 10 is a schematic view of a first shell-like body and a second shell-like body of a shell-like dental appliance in accordance with the present disclosure in a bite-actuated relationship;

FIG. 11 is a schematic view of a first shell-like body and a second shell-like body of a shell-like dental appliance in accordance with the present disclosure in a bite-actuated relationship;

FIG. 12 is a flow chart of a method of designing a shell-like dental instrument according to the present disclosure;

FIG. 13 is a flow chart of a method of designing a shell-like dental instrument according to the present disclosure;

FIG. 14 is a schematic structural view of another embodiment of a shell-like dental implement according to the present disclosure.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will illustrate specific embodiments of the present invention with reference to the drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

Referring to fig. 1 and 2, in one embodiment, the invention provides a shell-shaped dental instrument, which comprises a first shell-shaped body 1 for at least partially accommodating upper jaw teeth 11 and a second shell-shaped body 2 for at least partially accommodating lower jaw teeth 21, wherein the first shell-shaped body 1 is provided with a first bulge part 3 for guiding and adjusting the maxillomandibular position relation in a protruding manner towards the jaw direction in a region between canine teeth and molar teeth, and the second shell-shaped body 2 is provided with a second bulge part 4 for matching and adjusting the maxillomandibular position relation in a protruding manner towards the jaw direction in a region between canine teeth and molar teeth; a first reinforcing member 31 is arranged on the first boss 3, a second reinforcing member 41 is arranged on the second boss 4, and the outer surface of the first reinforcing member 31 and the outer surface of the second reinforcing member 41 have a concave-convex matching structure; when the first shell-shaped body 1 interacts with the second shell-shaped body 2, the first reinforcement member 31 and the second reinforcement member 41 slidably guide the upper and lower jaws to a predetermined occlusion position. The concave-convex matching structures of the first reinforcing member and the second reinforcing member can increase the contact rigidity of the first reinforcing member and the second reinforcing member by increasing the contact area of the first reinforcing member and the second reinforcing member, and can also mutually slide and accurately guide the upper jaw and the lower jaw to a preset occlusion position, so that unexpected deviation in the buccal and lingual directions is avoided, and a better treatment effect is achieved.

In some embodiments, the first boss 3 is provided with a first outer surface 32 at the mesial or distal surface, and the second boss 4 is provided with a second outer surface 42 at the mesial or distal surface, while the first reinforcement member 31 is provided on the first outer surface 32 and the second reinforcement member 41 is provided on the second outer surface 42. When the first shell-like body 1 interacts with the second shell-like body 2, the first reinforcing member 31 and the second reinforcing member 41 are located between the first boss 3 and the second boss 4, while the outer surface of the first reinforcing member 31 and the outer surface of the second reinforcing member 41 contact each other. Specifically, as shown in fig. 1 and 2a of fig. 2, when the invisible Twin-Block appliance is used by a patient, the first reinforcing member 31 is disposed on the medial surface of the first protrusion 3, the second reinforcing member 41 is disposed on the distal surface of the second protrusion 4, and when the first shell-shaped body 1 interacts with the second shell-shaped body 2, the first reinforcing member 31 of the first protrusion 3 and the second reinforcing member 41 of the second protrusion 4 move by the relative sliding guide movement thereof, so that the first protrusion 3 guides the second protrusion 4 to move in the medial direction, guides the mandibular protrusion to the preset position, and the first protrusion 3 is stably contacted with the occlusal surface of the second shell-shaped body 2, as shown in fig. 2a, and the arrow direction is the mandibular movement direction. As shown in fig. 1 and 2b of fig. 2, when the patient uses the trans-invisible Twin-Block appliance, the first reinforcement member 31 is disposed on the distal surface of the first protrusion 3, the second reinforcement member 41 is disposed on the proximal surface of the second protrusion 4, and when the first shell-shaped body 1 interacts with the second shell-shaped body 2, the first reinforcement member 31 of the first protrusion 3 and the second reinforcement member 41 of the second protrusion 4 move guided by their relative sliding movement, so that the first protrusion 3 guides the second protrusion 4 to move in the distal direction, guides the mandibular movement to a preset position and the first protrusion 3 stably contacts with the occlusal surface of the second shell-shaped body 2, as shown in 2b of fig. 2, and the arrow direction is the mandibular movement direction.

Fig. 3 is a schematic view of an invisible Twin-Block appliance according to an embodiment of the invention, as shown in fig. 2 and 3, the first shell-shaped body 1 and the second shell-shaped body 2 interact with each other during occlusion of a patient, and the first protrusion 3 slides linearly in the upper and lower jaw direction with reference to the second protrusion 4. Referring to fig. 1 and 4, the outer surface of the first reinforcing member 31 and the outer surface of the second reinforcing member 41 are in a concave-convex matching shape, and the relative sliding motion of the concave-convex matching structures of the first reinforcing member 31 of the first boss 3 and the second reinforcing member 41 of the second boss 4 can be regarded as a guide rail motion, so that the freedom of movement in one direction is reserved. Stated further, the direction of movement is the direction of the x-axis in fig. 3, which is established in the maxillomandibular direction of the first outer surface 32 of the first boss 3. Further, the concave-convex matching structures of the first reinforcing member 31 and the second reinforcing member 41 may form a cylindrical surface guide rail or a prismatic surface guide rail. In fig. 4, 34a is a cylindrical guide rail, and 34b and 34c are prismatic guide rails. In addition to the rail shape shown in fig. 4, in other embodiments, the prismatic surface rail further comprises: a symmetrical triangular prism surface guide rail, an asymmetrical triangular prism surface guide rail, a rectangular prism surface guide rail, a dovetail prism surface guide rail and the like. The linear sliding structure of the first reinforcing member 31 and the second reinforcing member 41 is simple in structure and increases in contact rigidity due to an increase in contact area therebetween.

In some embodiments, the first stiffening member outer surface includes a convex geometry thereon, and the second stiffening member outer surface defines a concave geometry thereon that mates with the convex geometry on the oppositely disposed first stiffening member outer surface.

In some embodiments, the second stiffening member includes a convex geometry on an outer surface thereof, and the first stiffening member outer surface defines a concave geometry thereon that mates with the convex geometry on the oppositely disposed first stiffening member outer surface. The convex geometry and the concave geometry are matched with each other during occlusion of the patient, so that contact stability of the first convex part and the second convex part is improved, and unexpected deviation of the upper jaw and the lower jaw of the patient in the bucco-lingual direction during treatment is avoided.

In some embodiments, the maximum width of the cross section of the convex geometry in the coronal plane is smaller than the minimum width of the cross section of the concave geometry in the coronal plane, in particular, the maximum width of the cross section of the convex portion of the convex geometry in the coronal plane is smaller than the minimum width of the cross section of the concave portion of the concave geometry in the coronal plane, so that a smaller gap exists between the convex geometry and the concave geometry, and the relative sliding between the first reinforcing member and the second reinforcing member can be smoother, thereby reducing the friction between the first reinforcing member and the second reinforcing member, improving the wear resistance and prolonging the service life of the shell-shaped dental instrument.

Referring to fig. 5 and 6, in some embodiments, the first reinforcement member 31 and the first boss 3 are integrally formed or each independently formed; the second reinforcing member 41 and the second boss 4 are integrally formed or each independently formed. Specifically, the boss is integrally formed with the boss reinforcing member 51-1 as an integral boss 5-1; the convex part and the concave reinforcing member 61-1 are integrally formed into an integral concave convex part 6-1; the convex part and the convex reinforcing member 51-2 are respectively and independently formed into a non-integral convex part 5-2; the convex portion and the concave reinforcing member 61-1 are each independently formed as a non-integral concave convex portion 6-2. Referring to fig. 7, the schematic diagram shows 4 different combinations of the convex part matching modes: the integral convex protrusion 5-1 is matched with the integral concave protrusion 6-1, the non-integral convex protrusion 5-2 is matched with the non-integral concave protrusion 6-2, the non-integral convex protrusion 5-2 is matched with the integral concave protrusion 6-1, and the integral convex protrusion 5-1 is matched with the non-integral concave protrusion 6-2.

In some embodiments, the first stiffening member 31 wall thickness is greater than or equal to the wall thickness of the first boss 3; the wall thickness of the second reinforcing member 41 is greater than or equal to the wall thickness of the second convex portion 4. The purpose is to increase the rigidity of the first reinforcing member 31 and the second reinforcing member 41, prevent the pressing deformation caused by the interaction between the two members, and reduce the wear caused by the interaction between the two members. Specifically, the wall thickness of the first convex portion 3 and the wall thickness of the second convex portion 4 are 0.1mm to 0.2mm, and the outer surface thickness of the first reinforcing member 31 is 1.0 times to 1.5 times the thickness of the first outer surface 32 of the first convex portion 3; the second stiffening member 41 has an outer surface thickness of 1.0-1.5 times the thickness of the second outer surface 42 of the second boss 4, wherein the wall thickness is the thickness between the inner and outer surfaces of the first and second stiffening members.

In some embodiments, when the first reinforcing member 31 and the first boss 3 are each independently molded, the rigidity of the first reinforcing member 31 is greater than or equal to the rigidity of the first boss 3; when the second reinforcing member 41 and the second boss 4 are each molded independently, the rigidity of the second reinforcing member 41 is greater than or equal to the rigidity of the second boss 4. Preferably, the stiffening member is of a material which is more rigid than the boss, such as other polymeric materials, ceramics or metals.

In some embodiments, the first reinforcement member 31 and the first boss 3 are provided in a non-detachable fixed connection or a detachable fixed connection; the second reinforcing member 41 and the second boss 4 are provided in a non-detachable fixed connection or a detachable fixed connection. In particular, the non-detachable fixed connection comprises: bonding, welding, riveting, and the like; the removable fixed connection includes: pinned, plugged, etc. The detachable fixed connection can replace different reinforcing components according to different correction requirements, more different correction schemes can be solved, for example, a doctor can use different reinforcing components according to different cases or different patients, or different reinforcing components can be replaced according to different correction step requirements in different correction steps for the same patient, so that the utilization rate of the first shell-shaped body and the second shell-shaped body is improved, and the correction cost is saved.

In some embodiments, the projections can be provided extending from the buccal surface of the shell-like body, from the occlusal surface, from the lingual surface, from the buccal surface and the occlusal surface, from the lingual surface and the occlusal surface, from the buccal surface and the lingual surface and the occlusal surface.

Referring to fig. 8 and 9, in some embodiments, at least one reinforcing ridge 7 is provided on at least one surface of the buccal, lingual, mesial, distal aspect of the first lobe 3 and/or the second lobe 4. In particular, reinforcing ridge 7 is integrally formed with first boss 3 and/or reinforcing ridge 7 is integrally formed with second boss 4. The number of the shell-shaped bodies can be increased or decreased on different groups of shell-shaped bodies according to different requirements on the correcting force. Further, the reinforcing ridges 7 intersect or are parallel to the orbital-ear plane (horizontal plane). In these embodiments, the surface curvature of the reinforcing ridge 7 exceeds the curvature of the outer surface of the boss, while the surface curvature of the reinforcing ridge 7 also needs to be such that when it is disposed in the mesial or distal plane of the boss, the curvature of the outer surface of the reinforcing ridge 7 is less than or equal to the curvature of the outer surface of the reinforcing member. The purpose is that reinforcing ridge 7 does not affect the stable contact of first reinforcing member 31 and second reinforcing member 41 and does not change the size of the gap between the first reinforcing member and the second reinforcing member.

In other embodiments, the first protruding part 3 and the second protruding part 4 are further provided with filling parts (not shown), the filling parts can be arranged in the hollow parts of the first protruding part 3 and the second protruding part 4, and the reinforcing member and the filling parts and/or the reinforcing ridges 7 jointly prevent the first protruding part 3 and the second protruding part 4 from being worn, squeezed and deformed during occlusion, so that the maxillofacial position relationship can be better adjusted.

Referring to fig. 9, the first and second projections 3 and 4 are not used in conjunction with an invisible appliance and are separately fixed to the surface of the patient's teeth, and the fixing positions may be provided on the occlusal, lingual or buccal surfaces of the teeth, and the fixing method may be adhered by a bonding agent so that the first and second projections 3 and 4 firmly cover one or more teeth of the patient.

In some embodiments, with reference to fig. 10, when the first shell-like body 1 interacts with the second shell-like body 2, there is a planar stable contact between the protrusions and the shell-like bodies; referring to fig. 11, when the first shell-shaped body 1 interacts with the second shell-shaped body 2, the surface of the protrusion facing the occlusal surface of the opposite jaw is identical to the surface anatomical feature of the occlusal surface of the posterior dental area of the shell-shaped body, and during occlusion, the occlusal surface of the protrusion is in concave-convex matching or occlusion matching stable contact with the occlusal surface of the posterior dental area of the shell-shaped body. In other embodiments, the protrusion is a solid protrusion formed separately and can be directly fixed on the surface of the patient's teeth, the surface of the protrusion facing the occlusal surface of the jaw is the same as the anatomical features of the surface of the occlusal surface of the posterior dental area of the patient, and the occlusal surface of the protrusion is in concave-convex matching stable contact with the surface of the occlusal surface of the posterior dental area during occlusion of the patient. Wherein, the anatomical feature of the occlusal surface refers to a concave-convex structure formed by cusps and sulcus on the occlusal surface of the teeth.

The invention also provides a dental appliance system comprising a plurality of sets of shell-like dental appliances, wherein the plurality of sets of shell-like dental appliances comprise at least one set of shell-like dental appliances provided in any one of the embodiments described above, and the teeth of a patient can be gradually repositioned from an initial position to a target appliance position under the combined action of the plurality of sets of shell-like dental appliances.

In some embodiments, the height of the first protrusion 3 and the height of the second protrusion 4 in the opposite jaw direction are set in association with the correction step. Specifically, the orthodontic system can simultaneously correct malocclusion teeth while adjusting the jaw relation, and comprises at least one series of shell-shaped dental instruments, wherein each series of shell-shaped dental instruments comprises at least one group of shell-shaped dental instruments, and each group of shell-shaped dental instruments comprises a first shell-shaped body and a second shell-shaped body. In performing dental correction, the patient is required to wear a series of shell dental appliances, one of which includes a plurality of sets of shell dental appliances as exemplified above. Specifically, the heights of the first protrusions 3 and the second protrusions 4 of the same series of shell-shaped dental instruments are gradually reduced along with the progress of correction, so as to achieve the target correction effect.

The present invention also provides a design method of a shell-like dental instrument for obtaining a first shell-like body in which the first reinforcing member 31 provided in any one of the embodiments described above is integrally formed with the first boss 3 and a second shell-like body in which the second reinforcing member 41 and the second boss 4 are integrally formed.

FIG. 12 is a flow chart of a method of designing a shell-like dental instrument according to the present invention.

S1: acquiring a first initial dental digital model;

s2: designing a first bulge model in the region between the canine teeth and the molar teeth of the first initial dental digital model in the opposite jaw direction, and designing a first reinforcing member model on the mesial surface or distal surface of the first bulge: the method comprises the steps of acquiring characteristic information of the first convex part and characteristic information of a first reinforcing member;

s3: generating a first dental digital model having a first projection and a first reinforcing member based on the first initial dental digital model and the first projection model and a first reinforcing member model;

s4, acquiring a second initial dental digital model;

s5, designing a second bulge model in the opposite jaw direction in the area between the canine teeth and the molar teeth of the second initial dental digital model, and designing a second reinforcing member model on the mesial surface or distal surface of the second bulge: the method comprises the steps of acquiring characteristic information of the second convex part and characteristic information of a second reinforcing member;

s6, generating a second dental digital model with a second convex part and a second reinforcing member based on the second initial dental digital model and the second convex part model and the second reinforcing member model;

s7, designing a first shell-shaped body and a second shell-shaped body by utilizing the first dental digital model and the second dental digital model;

reference is made to fig. 1 to 3, wherein the first shell-like body and the second shell-like body are respectively the first shell-like body 1 at least partially accommodating the maxillary teeth 11 and the second shell-like body 2 at least partially accommodating the mandibular teeth 21 as described above; when the first shell-shaped body 1 interacts with the second shell-shaped body 2, the outer surface of the first reinforcing member 31 is matched with the outer surface of the second reinforcing member 41 in a concave-convex mode, and the first reinforcing member 31 and the second reinforcing member 41 slidably guide the upper and lower jaws to a preset occlusion position.

Specifically, the execution of S1 to S3 may be performed in synchronization with the execution of S4 to S6, or S3 to S6 may be performed before S1 to S3, in other words, there is no design order limitation in the design of the first and second shell-shaped bodies in the present invention.

In some embodiments, the thickness of the outer surface of the first stiffening member 31 and the outer surface of the second stiffening member 41 may be increased during the manufacturing process according to the strength of the correction required by the patient, for example using a film of non-uniform thickness when using a manufacturing method of hot-pressing, or directly printed during 3D printing according to a digital model of the shell-like dental instrument.

The present invention also provides a design method of a shell-like dental instrument for obtaining a first shell-like body in which the first reinforcing member 31 is not integrally formed with the first boss 3 and a second shell-like body in which the second reinforcing member 41 and the second boss 4 are not integrally formed as described above.

FIG. 13 is a flow chart of a method of designing a shell-like dental instrument according to the present invention.

S1: acquiring a first initial dental digital model;

s2: designing a first bulge model in the region between the canine teeth and the molar teeth of the first initial dental digital model towards the opposite jaw direction, wherein the characteristic information of the first bulge is obtained;

s3: generating a first dental digital model having first projections based on the first initial dental digital model and the first projection model;

s4, acquiring a second initial dental digital model;

s5, designing a second bulge model towards the opposite jaw direction in the area between the canine teeth and the molar teeth of the second initial dental digital model, and acquiring characteristic information of the second bulge;

s6, generating a second dental digital model with a second convex part based on the second initial dental digital model and the second convex part model;

s7, designing a first shell-shaped body and a second shell-shaped body by utilizing the first dental digital model and the second dental digital model;

s8: a first reinforcing member is provided on a mesial surface or distal surface of the first boss portion of the first shell-shaped body, and a second reinforcing member is provided on a mesial surface or distal surface of the second boss portion of the second shell-shaped body.

Referring to fig. 1 to 3, wherein the first and second shell-shaped bodies are the first shell-shaped body 1 accommodating the maxillary tooth 11 and the second shell-shaped body 2 accommodating the mandibular tooth 21, respectively, as described above; when the first shell-shaped body 1 interacts with the second shell-shaped body 2, the outer surface of the first reinforcing member 31 is matched with the outer surface of the second reinforcing member 41 in a concave-convex mode, and the first reinforcing member 31 and the second reinforcing member 41 slidably guide the upper and lower jaws to a preset occlusion position. Meanwhile, the first convex part 3 is fixedly connected with the first reinforcing member 31; the second protruding portion 4 and the second reinforcing member 41 are fixedly connected, and the fixed connection includes a non-detachable fixed connection or a detachable fixed connection. The fixing position of the reinforcing member may be marked on the boss during the manufacturing process, and the reinforcing member may be fixed according to the marked position of the boss.

Specifically, the execution of S1 to S3 may be performed in synchronization with the execution of S3 to S6, or S3 to S6 may be performed before S1 to S3, in other words, there is no design order limitation in the design of the first and second shell-shaped bodies in the present invention.

The invention also provides a preparation method of the shell-shaped dental instrument, which comprises the following steps: based on the first dental digital model and the second dental digital model designed by the design method, the shell-shaped dental instrument is prepared by adopting a hot-pressing film forming process.

The present invention also provides another method for manufacturing a shell-shaped dental instrument, comprising: the shell-shaped dental instrument is directly prepared by an additive manufacturing method based on the first shell-shaped body and the second shell-shaped body designed by the design method.

In some embodiments, the manufacturing module in the manufacturing method may also be a 3D printing device, a film pressing device, a cutting device, a polishing device, and a cleaning and disinfecting device, and the specific manufacturing process includes firstly directly printing a digital dental model meeting requirements by a 3D printing technology, secondly performing film pressing operation on the printed 3D dental model, and finally performing cutting, polishing, cleaning, and disinfecting on the filmed shell-shaped dental instrument, where the fixed connection process between the protruding portion and the reinforcing member may be performed before or after any one of processes after the film pressing process (excluding the film pressing process) and before the disinfecting process (excluding the disinfecting process), or the reinforcing member may be mounted in the marking position of the protruding portion during the use process of a doctor.

In some embodiments, referring to fig. 14, the convex portion is provided with at least one reinforcing surface on the buccal side and/or lingual side, and at least one reinforcing member is provided on one reinforcing surface, and the reinforcing member is integrally formed with the convex portion, and the reinforcing member is formed by partially bending the buccal side and/or lingual side of the convex portion inward or outward, and further, the reinforcing member may be bent outward to form a convex point structure.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.