WO2021135576A1

WO2021135576A1 - Dental instrument and design method and preparation method therefor

Info

Publication number: WO2021135576A1
Application number: PCT/CN2020/124125
Authority: WO
Inventors: 沈刚; 徐子卿; 郭涛; 王特; 蒋健羽; 王星星; 庄慧敏; 吴刚; 於路; 倪新亮
Original assignee: 上海正雅齿科科技股份有限公司; 沈刚
Priority date: 2019-12-31
Filing date: 2020-10-27
Publication date: 2021-07-08
Also published as: ES1295471U; DE212020000762U1; JP3240101U; ES1295471Y

Abstract

A dental instrument (10) for adjusting the positional relationship of the upper and lower jaw, and a design method and a preparation method therefor. The dental instrument (10) comprises a first shell-shaped body (1) accommodating the maxillary teeth and a second shell-shaped body (2) accommodating the mandibular teeth, a protruding part (3) for inducing the adjustment of the positional relationship of the upper and lower jaw being arranged at the position of the occlusal surface of the rear tooth region of the first shell-shaped body (1) and protruding toward the opposite jaw, and a guide part (4) for guiding the protruding part (3) to make the positional relationship of the upper and lower jaw become normal being arranged at the position of the occlusal surface of the rear tooth region of the second shell-shaped body (2); the protruding part (3) and the guide part (4) are respectively provided with contact surfaces that act on one another to induce the adjustment of the positional relationship of the upper and lower jaw, and a holding part (32) in stable contact with the second shell-shaped body (2) is arranged at a position of the protruding part (3) facing the occlusal surface of the opposite jaw; when the first shell-shaped body (1) and the second shell-shaped body (2) act on one another, the guide part (4) guides the protruding part (3) to move, and the protruding part (3) moves to a predetermined position such that the holding part (32) is in stable contact with the occlusal surface on the second shell-shaped body (2).

Description

Dental instrument and its design method and preparation method

Cross-references to related applications

This application claims to enjoy the priority of the Chinese patent applications 201911415898.8 and 201922484256.5 filed on December 31, 2019, all of which are incorporated herein by reference.

Technical field

This application relates to the technical field of medical devices, in particular to a dental device and its design method and preparation method.

Background technique

Malocclusion refers to the malformation of the tooth and jaw caused by congenital genetic factors or acquired environmental factors during the growth and development of children. The acquired environmental factors include diseases, bad oral habits, and dental replacement disorders. It can also be growth. Factors such as trauma and periodontal disease during development. The formation factors and mechanisms of malocclusion are intricate, and its occurrence process may be affected by a single factor and a single mechanism, or it may be the result of a combination of multiple factors or multiple mechanisms.

According to the Angle's classification method, malocclusion is divided into type I malocclusion (neutral malocclusion), type II malocclusion (distal malocclusion) and type III malocclusion (mimial malocclusion). Among them, type Ⅱ malocclusion is one of the common malocclusion deformities in orthodontics. The typical manifestations of type Ⅱ malocclusion are maxillary anterior protrusion, deep anterior teeth coverage, deep overbite, open lip showing teeth, and introversion type. Deep overlying, the lower part of the face is too short, or the chin and lip groove is deep. For patients with mild to moderate mandibular recession, due to insufficient mandibular development, the patient is in the growth and development period. Some patients are even at the peak of growth and development. Functional appliances such as Twin-Block, muscle stimulators, Herbst appliances, and functional adjustments are used. Type II (FR-II) can stimulate and promote the forward growth of the mandible, and it can play a very good role in the correction of the deep coverage of the anterior teeth of many Class II malocclusions and the relationship between the distal molars.

Among them, the Twin-Block appliance guides the mandible in an extended position through two raised slopes when the patient is occluding, which can effectively utilize all functional correction forces including masticatory force. The reverse Twin-Block appliance guides the mandibular retraction through two raised bevels when the patient bites. Invisible dental appliances are chosen by more and more people because they are comfortable to wear, removable and beautiful, but how to combine the functional correction effect of Twin-Block appliances with invisible appliances and achieve the same or better correction The effect, or the structural improvement of the invisible aligner to achieve the same or better correction effect of the Twin-Block aligner, is an urgent problem to be solved.

Therefore, it is of great significance to study a dental instrument that can adjust the relationship between the upper and lower jaws that takes into account safety, comfort and convenience.

Summary of the invention

Some embodiments of this application provide a dental instrument and its design method and preparation method. The upper shell-shaped body is provided with a convex portion and the lower shell-shaped body is provided with a guide portion respectively, and the two cooperate with each other to make the upper The mandibular position relationship is adjusted. The dental instrument provided by this application not only adjusts the relationship between the upper and lower jaws to become normal, but also corrects the maloccluded teeth at the same time.

In an embodiment of the present application, the present application provides a dental instrument for adjusting the relationship between the upper and lower jaws, which includes a first shell-shaped body accommodating the upper teeth and a second shell-shaped body accommodating the lower teeth. The position of the occlusal surface of the posterior region of the first shell-shaped body protrudes toward the opposite jaw and is provided with a protrusion for inducing adjustment of the relationship between the upper and lower jaws, and the position of the occlusal surface of the second shell-shaped body is provided with A guide part that guides the protrusion to make the relationship between the upper and lower jaws tend to be normal. Wherein, the mesial surface of the protrusion and the distal surface of the guide portion are provided with interacting contact surfaces to induce and adjust the relationship between the upper and lower jaw positions; and the protrusion is provided on the occlusal surface facing the opposite jaw. There is a holding portion that is in stable contact with the second shell-shaped body; wherein, when the first shell-shaped body interacts with the second shell-shaped body, the distal surface of the guide portion guides the convex The mesial surface of the raised portion moves, and at the same time, the protrusion moves to a predetermined position so that the holding portion is in stable contact with the occlusal surface on the second shell-shaped body.

In an embodiment of the present application, the interacting contact surfaces provided on the mesial direction surface of the protruding portion and the distal direction surface of the guide portion are smooth contact or non-smooth contact.

In an embodiment of the present application, the structure of the holding portion is a concave-convex structure with the same anatomical features of the occlusal surface of the posterior region of the second shell-shaped body.

In an embodiment of the present application, the structure of the holding portion is a concave-convex structure formed by the anatomical features of the occlusal surface of the posterior region of the first shell-shaped body extending toward the opposite jaw.

In an embodiment of the present application, the structure of the holding portion is one, two or more of a structure with a frosted surface, a structure with a bump, a structure with a hollow surface, or a structure with a hole surface. Kind of combination.

In an embodiment of the present application, the rigidity of the protrusion is greater than the rigidity of the first shell-shaped body to accommodate the upper jaw teeth; the rigidity of the guide part is greater than the rigidity of the second shell-shaped body to accommodate the mandibular teeth .

In an embodiment of the present application, the protrusion is different from at least one of the thickness, hardness, material, and number of layers of the upper tooth accommodating area of the first shell-shaped body; the guide part is different from the second The shell-shaped body is different in at least one of thickness, hardness, material, and number of layers of the mandibular tooth accommodating region.

In an embodiment of the present application, the hardness and/or elastic modulus of the holding portion on the protrusion is greater than the hardness and/or elastic modulus of the region in which the first shell-shaped body accommodates the maxillary teeth.

In an embodiment of the present application, the second shell-shaped body is further provided with a limit part that cooperates with the guide part to limit the relative movement of the protrusion, and the mesial direction surface of the limit part is aligned with The distal surface of the protrusion is provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw position; when the first shell-shaped body interacts with the second shell-shaped body, the protrusion The part is located between the guiding part and the limiting part.

In an embodiment of the present application, the interaction contact surface provided on the mesial direction surface of the limiting portion and the distal direction surface of the protrusion portion is a non-smooth surface.

In an embodiment of the present application, the non-smooth surface is one, two or more of a structure with a matte surface, a structure with bumps, a structure with a hollow surface, or a structure with a hole surface. The combination.

In an embodiment of the present application, the protruding portion and the limiting portion are respectively provided with magnets that induce and adjust the relationship between the upper and lower jaw positions and have the same polarity.

In an embodiment of the present application, the protruding portion and the guiding portion are respectively provided with magnets that stabilize the relative jaw position relationship and have opposite polarities, and the limiting portion is provided with a magnet with a polarity that is opposite to that in the protruding portion. The same magnet.

In an embodiment of the present application, the first shell-shaped body is provided with a plurality of the protrusions, and the second shell-shaped body is provided with a plurality of the guides that interact with the protrusions. Part, the plurality of protrusions interact with the plurality of guide parts to induce the adjustment of the upper and lower jaw relationship to become normal.

In an embodiment of the present application, the length of the protruding portion in the mesio-distal direction of the dentition at least partially covers the length of the posterior tooth in the mesio-distal direction; the length of the guide portion in the mesio-distal direction of the dentition is at least Partly covers the length of the canine in the mesio-distal direction.

In an embodiment of the present application, the protruding portion and/or the guiding portion are filled with a filling portion for enhancing the occlusal strength.

In an embodiment of the present application, the protruding portion and the guiding portion are respectively provided with magnets that stabilize the relative jaw position and have opposite polarities.

In an embodiment of the present application, the protruding portion and the first shell-shaped body are integrally formed; the guide portion and the second shell-like body are integrally formed.

In an embodiment of the present application, the present application provides another dental instrument for adjusting the relationship between the upper and lower jaws, which includes a first shell-shaped body accommodating the upper teeth and a second shell-shaped body accommodating the lower teeth. The position of the occlusal surface of the posterior region of the first shell-shaped body protrudes toward the opposite jaw and is provided with a protrusion for inducing adjustment of the relationship between the upper and lower jaws, and the position of the occlusal surface of the second shell-shaped body is provided with A guide part that guides the protrusion to make the relationship between the upper and lower jaws tend to be normal. Wherein, the distal direction surface of the convex portion and the mesial direction surface of the guide portion are provided with interacting contact surfaces to induce and adjust the relationship between the upper and lower jaw positions; and the convex portion is provided at the occlusal surface facing the opposite jaw. There is a holding part that is in stable contact with the second shell-shaped body. Wherein, when the first shell-shaped body interacts with the second shell-shaped body, the mesial direction surface of the guide portion guides the movement of the distal direction surface of the protrusion, and at the same time, the protrusion The movement of the part to a predetermined position enables the holding part to stably contact the occlusal surface on the second shell-shaped body.

In an embodiment of the present application, the interaction contact surfaces provided in the distal direction of the protrusion and the mesial direction of the guide portion are smooth contact or non-smooth contact.

In an embodiment of the present application, the hardness and/or elastic modulus of the retaining portion on the protrusion is greater than the hardness and/or elastic modulus of the region where the first shell-shaped body accommodates the maxillary teeth.

In an embodiment of the present application, the second shell-shaped body is further provided with a limiting portion that cooperates with the guide portion to limit the relative movement of the protrusion, and the distal surface of the limiting portion is aligned with The mesial surface of the protrusion is provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw position; when the first shell-shaped body interacts with the second shell-shaped body, the protrusion The part is located between the guiding part and the limiting part.

In an embodiment of the present application, the interaction contact surface provided on the distal direction surface of the limiting portion and the mesial direction surface of the protruding portion is a non-smooth surface.

In an embodiment of the present application, the non-smooth surface is a structure with a frosted surface, a structure with a bump, a structure with a hollow surface, or a structure with a hole surface, one, two or more of them. Kind of combination.

In an embodiment of the present application, the present application also provides a dental treatment system, including multiple sets of dental instruments for adjusting the relationship between the upper and lower jaws, characterized in that the multiple sets of dental instruments for adjusting the relationship between the upper and lower jaws include at least one set The above-mentioned dental instrument for adjusting the relationship between the upper and lower jaws.

In an embodiment of the present application, the multiple sets of dental instruments for adjusting the relationship between the upper and lower jaw positions have a geometric shape that allows the teeth to be gradually repositioned from the initial position to the target orthodontic position.

In an embodiment of the present application, the protrusion heights of the protrusions in the opposing direction and the protrusion heights of the guides in the opposing direction are provided on the multiple sets of dental instruments for adjusting the relationship between the upper and lower jaw positions. With the correction process gradually reduced.

In an embodiment of the present application, the present application also provides a design method for adjusting the relationship between the upper and lower jaw positions, including:

Acquire the first initial digital model of the dental jaw;

Designing a protrusion model on the occlusal surface of the posterior area of the first initial digital dental model includes acquiring characteristic information of the protrusion; wherein the characteristic information of the protrusion includes the size and A preset position, and the protrusions are arranged to match the occlusal surface of the antagonist teeth with the concave-convex surface of the posterior area of the opposite teeth or to match the occlusal surface of the occlusal surface of the posterior area of the opposite teeth;

Generating a first digital dental model with a raised portion based on the first initial digital dental model and the raised portion model;

A first shell-shaped dental instrument is designed based on the first dentition digital model, so that the first shell-shaped dental instrument has a shell shape with a cavity for accommodating a first dentition, and the first shell-shaped dental instrument The posterior tooth area has a protrusion protruding in the opposite jaw direction, and the protrusion includes a mesial surface of the protrusion and a distal surface of the protrusion;

Acquire the second initial digital model of the dental jaw;

Designing a guide part model on the occlusal surface of the second initial dental jaw digital model, which specifically includes acquiring the guide part characteristic information; wherein the guide part characteristic information includes the size and preset position of the guide part;

Based on the second initial digital dental model and the guide model, generating a second digital dental model with a guide;

The second shell-shaped dental instrument is designed based on the second dentition digital model so that the second shell-shaped dental instrument has a shell shape with a cavity for accommodating a second dentition, and the second shell shape The dental instrument has a guide part that cooperates with the protrusion of the first shell-shaped dental instrument, and the guide part includes a proximal surface of the guide portion and a distal surface of the guide portion;

Wherein, the first shell-shaped dental instrument and the second shell-shaped dental instrument are respectively the first shell-shaped body for accommodating the upper teeth and the second shell-shaped body for accommodating the lower teeth as described above; the first shell-shaped body and When the second shell-shaped body interacts, the guide portion guides the protrusion to move, and at the same time, the protrusion moves to a predetermined position so that the retaining portion engages with the second shell-shaped body. Stable surface contact.

In an embodiment of the present application, the distal direction surface of the guide portion guides the mesial movement of the protrusion, or the mesial direction surface of the guide portion guides the distal movement of the protrusion.

In an embodiment of the present application, the process of designing the second shell-shaped dental instrument by the second dental jaw digital model further includes the step of designing a limiting part, so that the designed dental instrument can pass through the limiting part and The guide portions jointly limit the relative movement of the protrusions, wherein the limiting portion includes a proximal surface of the limiting portion and a distal surface of the limiting portion.

In an embodiment of the present application, the proximal surface of the limiting portion and the distal surface of the protrusion are provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw relationship; or the distal surface of the limiting portion The surface and the mesial surface of the protrusion are provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw relationship.

In an embodiment of the present application, the present application also provides a method for preparing a dental device that adjusts the relationship between the upper and lower jaw positions. The dental device is prepared based on the above-mentioned design method. The preparation method includes: a hot press molding method or a direct 3D method. The method of printing.

Compared with the prior art, the dental instrument for adjusting the relationship between the upper and lower jaws provided in the present application is provided by providing a protrusion on the first shell-shaped body accommodating the maxillary teeth and guides on the second shell-shaped body accommodating the mandibular teeth. Portion, the mesial direction surface of the protrusion and the distal direction surface of the guide portion are provided with interacting contact surfaces to induce and adjust the relationship between the upper and lower jaws, and the protrusions are provided facing the occlusal surface of the opposite jaw. There is a holding portion that is in stable contact with the second shell-shaped body, and when the first shell-shaped body interacts with the second shell-shaped body, the distal surface of the guide portion guides the protruding portion The mesial direction surface moves, and at the same time, the protrusion moves to a predetermined position so that the holding portion is in stable contact with the occlusal surface on the second shell-shaped body. When the first shell-shaped body and the second shell-shaped body interact, the protrusions and guides provided on the occlusal surface can open the occlusion while inducing the adjustment of the upper and lower jaw relationship. Specifically, it can guide the mandibular extension, especially for Class II cases with spee curve depth greater than 3mm have a good therapeutic effect.

In addition, another dental instrument for adjusting the relationship between the upper and lower jaws provided by the present application is provided by arranging protrusions on the first shell-shaped body accommodating the maxillary teeth and guiding parts on the second shell-shaped body accommodating the mandibular teeth. The distal direction surface of the protrusion and the mesial direction surface of the guide portion are provided with interacting contact surfaces to induce and adjust the relationship between the upper and lower jaw positions, and the protrusion facing the opposing occlusal surface is provided with and The holding portion of the second shell-shaped body in stable contact, when the first shell-shaped body interacts with the second shell-shaped body, the mesial direction surface of the guide portion guides the distal center of the protrusion The directional surface moves, and at the same time, the protrusion moves to a predetermined position so that the holding portion is in stable contact with the occlusal surface on the second shell-shaped body. When the first shell-shaped body and the second shell-shaped body interact, the protrusions and guides provided on the occlusal surface can open the occlusion while inducing the adjustment of the upper and lower jaw position. Specifically, it can guide the retraction of the mandible, especially for Class III cases with spee curve depth greater than 3mm have a good therapeutic effect.

In addition, the orthodontic system provided by the present application includes multiple sets of dental instruments for adjusting the relationship between the upper and lower jaws, and the multiple sets of dental instruments for adjusting the relationship between the upper and lower jaws have a geometric shape that allows the teeth to be gradually repositioned from the initial position to the target orthodontic position During the entire correction process, a series of multiple sets of dental instruments for adjusting the relationship between the upper and lower jaws not only adjust the relationship between the upper and lower jaws, but also correct the maloccluded teeth to achieve simultaneous corrections. In addition, in the method for designing a dental instrument for adjusting the relationship between the upper and lower jaw positions provided by the present application, a convex portion is designed on the first shell-shaped dental instrument, and a guide portion is provided on the second shell-shaped dental instrument. When a shell-shaped dental instrument and a second shell-shaped dental instrument are occluded, the protruding part contacts the guide part to adjust the position of the upper and lower jaws. The design of the holding part makes the occlusal relative position of the upper and lower jaws more stable.

Description of the drawings

FIG. 1 is a schematic diagram of a dental instrument for adjusting the relationship between the upper and lower jaws according to an embodiment of the application.

Fig. 2 is a schematic diagram of the mutual positional relationship between the first shell-shaped body and the second shell-shaped body of the dental instrument in Fig. 1 during occlusion.

FIG. 3 is a schematic diagram of a dental instrument for adjusting the relationship between the upper and lower jaws according to an embodiment of the application.

Fig. 4 is a schematic diagram of the mutual positional relationship between the first shell-shaped body and the second shell-shaped body of the dental instrument in Fig. 3 during occlusion.

FIG. 5 is a schematic diagram of a dental instrument for adjusting the relationship between the upper and lower jaw positions according to an embodiment of the application.

Fig. 6 is a schematic diagram of the mutual positional relationship between the first shell-shaped body and the second shell-shaped body of the dental instrument in Fig. 5 during occlusion.

FIG. 7 is an enlarged schematic diagram of the dotted area in FIG. 6.

FIG. 8 is a schematic diagram of the mutual positional relationship between the first shell-shaped body and the second shell-shaped body of the dental instrument for adjusting the relationship between the upper and lower jaw positions according to an embodiment of the application.

FIG. 9 is a schematic diagram of the mutual positional relationship between the first shell-shaped body and the second shell-shaped body of the dental instrument for adjusting the relationship between the upper and lower jaw positions according to an embodiment of the application.

10 is a schematic diagram of the mutual positional relationship between the first shell-shaped body and the second shell-shaped body of the dental instrument for adjusting the relationship between the upper and lower jaw positions according to an embodiment of the application.

FIG. 11 is an enlarged schematic diagram of the dotted area in FIG. 10.

FIG. 12 is a flowchart of the design method of the dental instrument for adjusting the relationship between the upper and lower jaw positions of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in the embodiments of this application will be described clearly and completely in conjunction with the drawings of this application. Obviously, the described embodiments are part of this application. Examples, not all examples. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application. Unless otherwise defined, the technical terms or scientific terms used herein shall be the ordinary meanings understood by those with ordinary skills in the field to which the application belongs. As used herein, "comprising" and other similar words mean that the elements or objects appearing before the word encompass the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

In view of the problems in related technologies, some embodiments of the present application provide a dental instrument that adjusts the relationship between the upper and lower jaws, so as to effectively guide the movement of the mandible, open the posterior teeth, and more specifically adjust the jaws of the dental instrument for the relationship between the upper and lower jaws. The friction structure provided on the occlusal surface of the pad can stabilize the mutual positional relationship between the upper and lower jaws during occlusal occlusion, restricting the lower jaw to be in a protruding position while having a relatively stable occlusal relationship. The jaw pad corresponds to the protruding part that induces and adjusts the relationship between the upper and lower jaw hereinafter. Among them, the "posterior tooth area" is defined according to the classification of teeth in pages 36-38 of "Introduction to Stomatology" 2nd edition published by Peking University Medical Press, including premolars and molars, which are shown as 4- by FDI notation. 8 teeth, the anterior area FDI marking method shows 1-3 teeth. The mesial surface and the distal surface are the two adjacent surfaces of the crown and the adjacent teeth, collectively referred to as the adjacent surface. The side closer to the midline of the face is called the mesial plane, and the side farther from the midline of the face is called the distal face. The direction near the midline of the face is the mesial direction, and the direction away from the midline of the face is the distal direction.

FIG. 1 is a schematic diagram of a dental instrument for adjusting the relationship between the upper and lower jaw positions according to an embodiment of the application; FIG. 2 is a schematic diagram of the mutual positional relationship between the first shell-shaped body and the second shell-shaped body of the dental instrument shown in FIG. 1 during occlusion .

1 and 2, the dental instrument 10 for adjusting the relationship between the upper and lower jaws includes a first shell-shaped body 1 for accommodating maxillary teeth and a second shell-shaped body 2 for accommodating mandibular teeth. The posterior region of the first shell-shaped body 1 The position of the occlusal surface protrudes toward the opposite jaw and is provided with a protrusion 3 that induces the adjustment of the relationship between the upper and lower jaws; the position of the second shell-shaped body's occlusal surface is provided with a guide portion 4, which is used to guide the protrusion The rising part 3 makes the relationship between the upper and lower jaws become normal; wherein the mesial direction surface 31 of the protrusion 3 and the distal direction surface 41 of the guide portion 4 are provided with interacting contact surfaces to induce adjustment of the upper and lower jaw position; convexity; The raised portion 3 is provided with a holding portion 32 that is in stable contact with the second shell-shaped body on the opposite occlusal surface; when the first shell-shaped body 1 interacts with the second shell-shaped body 2, the distal direction surface 41 of the guide portion 4 The mesial surface 31 of the guiding protrusion 3 is moved, and at the same time, the protrusion 3 is moved to a predetermined position so that the holding portion 32 is in stable contact with the occlusal surface on the second shell-shaped body 2.

In an alternative embodiment, the interaction contact surfaces provided on the mesial direction surface 31 of the protrusion 3 and the distal direction surface 41 of the guide portion 4 are in smooth contact. When the patient wears the above-mentioned dental instrument 10 for adjusting the upper and lower jaw position and performs occlusion, the protrusion 3 can be induced to move to a predetermined position through the smoothly contacting interaction surface. Among them, the mesial direction surface 31 and the distal direction surface 41 are, for example, a smooth plane, a smooth curved surface, or a smooth inclined surface, and the smooth plane, curved surface or inclined surface interacts and contacts to form the aforementioned smooth contact.

In an alternative embodiment, the interaction contact surfaces provided on the mesial direction surface 31 of the protrusion 3 and the distal direction surface 41 of the guide portion 4 are non-smooth contact, and the non-smooth contact surface It has a friction structure, a concave-convex matching structure, a surface texture structure, etc. When the patient wears the dental instrument 10 for adjusting the upper and lower jaw position and performs occlusion, the protrusion 3 can be induced to move to a predetermined position through the non-smooth contact interaction surface without relative movement. Among them, the mesial direction surface 31 of the protrusion 3 and the distal direction surface 41 of the guide portion 4 are, for example, a non-smooth plane, a non-smooth curved surface, or a non-smooth inclined surface, and the non-smooth plane or curved surface or the inclined surface interacts in contact with each other. Form the aforementioned non-smooth contact.

In an optional embodiment, the structure of the retaining portion 32 provided on the protruding portion 3 facing the occlusal occlusal surface of the second shell-shaped body 2 has the same concave-convex structure with the same anatomical feature of the posterior occlusal surface of the second shell-shaped body 2. When the first shell-shaped body 1 interacts with the second shell-shaped body 2, the concave-convex structure on the surface of the retaining portion 32 on the protrusion 3 is the same as the anatomical feature of the posterior occlusal surface of the second shell-shaped body 2, so that the retaining portion When 32 is in contact with the posterior region of the second shell-shaped body 2, a concave-convex structure with the same convex direction is formed, and the two are more closely combined. Alternatively, the convex portion 3 faces a concave-convex structure formed by the structure of the retaining portion 32 provided on the occlusal surface and the anatomical feature of the posterior occlusal surface of the first shell-shaped body 1 extending in the antagonistic direction. When the first shell-shaped body 1 interacts with the second shell-shaped body 2, the concave-convex structure on the surface of the retaining portion 32 on the protrusion 3 is the same as the anatomical features of the posterior occlusal surface of the first shell-shaped body 1, so that the retaining portion When 32 is in contact with the posterior area of the second shell-shaped body 2, a concave-convex structure with different convex directions is formed, that is, the concave-convex structure formed in the opposing direction and the posterior area of the second shell-shaped body 2 form a cusp in a stable fit. The occlusal concave-convex structure makes the two more closely integrated. Among them, the anatomical features of the occlusal surface refer to the concave-convex structure composed of the cusps, pits and fissures on the occlusal surface of the teeth.

In an optional embodiment, the structure of the holding portion 32 may also be one or two of a structure with a frosted surface, a structure with a bump, a structure with a hollow surface, or a structure with a hole surface. Or a combination of multiple. By adding a variety of structures that can increase friction on the retaining portion 32, when the upper and lower jaws are engaged, it is helpful to make the retaining portion 32 and the occlusal surface of the second shell-shaped body 2 stably contact, and prevent the protrusion 3 from the guide portion 4 Correction errors caused by relative movement.

In an alternative embodiment, the rigidity of the protrusion 3 is greater than the rigidity of the first shell-shaped body 1 to accommodate the upper jaw teeth; the rigidity of the guide part 4 is greater than the rigidity of the second shell-shaped body 2 to accommodate the lower teeth. In addition, the protrusion 3 is different from at least one of the thickness, hardness, material, and the number of layers in the area where the upper teeth of the first shell-shaped body 1 is accommodated; the thickness of the guide portion 4 and the second shell-shaped body 2 of the area where the teeth of the lower jaw are accommodated is different from each other. At least one of hardness, material, and number of layers is different. When the protrusions 3 and the guide 4 are convex cavities, when they interact, they are prone to deformation, which affects the correction effect. Increasing the rigidity of the protrusions 3 and the guide 4 can effectively prevent both The deformation caused by the interaction.

In addition, the hardness and/or elastic modulus of the holding portion 32 on the protrusion 3 is greater than the hardness and/or elastic modulus of the first shell-shaped body 1 in the area where the maxillary teeth are accommodated. The occlusal surface of the body 1, and the holding portion 32 is in contact with the second shell-shaped body 2, under the action of the occlusal force, deformation and damage are prone to occur. Increasing the hardness and/or elastic modulus of the holding portion 32 can be effective Prevent the occurrence of the above phenomenon.

In the present application, by adjusting various physical parameters of the protrusion 3 and the holding part 32, it is helpful to extend the service life of the protrusion 3 and the holding part 32 and reduce wear.

In a specific embodiment, the thickness of the first shell-shaped body 1 and/or the thickness of the second shell-shaped body 2 is 0.1 mm-2.0 mm.

In an alternative embodiment, the first shell-shaped body 1 is provided with a plurality of protrusions 3, the second shell-shaped body 2 is provided with a plurality of guide parts 4, the plurality of guide parts 4 and the plurality of protrusions The parts 3 correspond one-to-one, and the plurality of protrusions 3 interact with the plurality of guiding parts 4 to induce the adjustment of the upper and lower jaw positions to become normal. In this embodiment, the number of protrusions 3 is two, the number of guides 4 is two, and the two protrusions 3 respectively set the left posterior area and the right posterior area of the first shell-shaped body 1 , The two guiding parts 4 are respectively correspondingly arranged in the left posterior region and the right posterior region of the second shell-shaped body 2. It should be noted that when the number of protrusions 3 and the number of guides 4 is multiple, the multiple protrusions 3 need to be distributed in the left and right tooth regions of the first shell-shaped body 1 at the same time. The guiding parts 4 need to be distributed in the left tooth area and the back tooth area of the second shell-shaped body 2 at the same time.

The multiple protrusions 3 interact with the multiple guide portions 4 to induce the adjustment of the upper and lower jaw positions to become normal. The multiple protrusions 3 interact with the multiple guide portions 4, and the force is stronger, making the first shell-shaped The main body 1 and the second shell-shaped main body 2 can better adjust the relationship between the upper and lower jaws to become normal. Specifically, when the first shell-shaped body 1 is provided with two protrusions 3 on the left and right cheeks, and the second shell-shaped body 2 is provided with two guides 4 on the left and right cheeks, the left side As an example, the left side of the first shell-shaped body 1 is provided with a front protrusion and a rear protrusion, and the left side of the second shell-shaped body 2 is provided with a front guide and a rear guide. Between the front limit part and the rear limit part, the front protrusion and the rear limit part can be in contact or not. When they are not in contact, that is, the distal surface of the front protrusion part and the mesial part of the rear limit part. If the surfaces are not in contact, there is a certain distance between the two; when they are in contact, that is, the distal surface of the front protrusion is in contact with the mesial surface of the rear limiting portion, and there is no distance between the two.

In other embodiments, the occlusal surfaces of the posterior regions of the first shell-shaped body 1 are respectively provided with an unequal number of protrusions 3 (not shown). Correspondingly, the occlusal surfaces of the second shell-shaped body 2 on both sides There are also unequal number of guides 4 (not shown) on the surface, and the unequal number of protrusions 3 interact with the unequal number of guides 4 to induce the adjustment of the upper and lower jaw relationship to become normal, such as In this embodiment, the unequal number of protrusions 3 are provided with two on the left and right sides of the upper jaw, and the unequal number of guides 4 are provided with three on the left and right sides of the lower jaw; or the number of protrusions in this embodiment is unequal. The riser 3 is provided with two on the left and three on the right, and the number of guides 4 with different numbers is two on the left and three on the right.

In an optional embodiment, the length of the protrusion 3 in the mesio-distal direction of the dentition at least partially covers the length of the posterior teeth in the mesio-distal direction, for example, the protrusion 3 is in the mesio-distal direction of the dentition. The length of at least covers the length of one tooth in the mesial and distal direction of the posterior tooth area; the length of the guide portion 4 in the mesial and distal direction of the dentition at least partially covers the length of the canine in the mesial and distal direction. The raised portion 3 and the guide portion 4 formed in this embodiment can not only interact with the guide portion 4 to adjust the relationship between the upper and lower jaw positions, but also make the patient more comfortable to wear.

In an alternative embodiment, the raised portion 3 and/or the guide portion 4 are filled with a filling portion for enhancing the bite strength. The filling part is, for example, a polymer resin filled in the convex part 3 and/or the guide part 4. The filling part can fill the hollow part of the convex part 3 and the guiding part 4. By providing the filling part, the convex part 3 and the guiding part 4 can be prevented from being deformed or the degree of deformation of the convex part 3 and the guiding part 4 can be reduced. Prevent the effect of adjusting the relationship between the upper and lower jaw.

In an alternative embodiment, the protrusion 3 and the guide 4 are respectively provided with magnets that stabilize the relative jaw position and have opposite polarities. After the upper and lower jaws are occluded, the raised portion 3 moves to a predetermined position, and the raised portion 3 and the guide portion 4 are magnetically attracted by the magnetic attraction between magnets with opposite polarities, thereby helping to stabilize the relative position of the upper and lower jaws.

In an alternative embodiment, the protrusion 3 and the first shell-shaped body 1 are integrally formed; the guide portion 4 and the second shell-like body 2 are integrally formed. Among them, the protruding part 3 and the first shell-shaped body 1 are integrally formed by vacuum adsorption, or can be prepared by direct 3D printing; the guide part 4 and the second shell-like body 2 are integrally formed by vacuum adsorption, or can be prepared by direct 3D printing . In addition, the protruding portion 3 communicates with the cavity for accommodating the maxillary teeth in the first shell-shaped body 1, and the guide portion 4 and the cavity for accommodating the lower teeth of the second shell-shaped body 2 communicate with each other. In other words, the protrusion 3 and the guide 4 are substantially hollow structures.

FIG. 3 is a schematic diagram of a dental instrument for adjusting the relationship between the upper and lower jaw positions according to an embodiment of the application; FIG. 4 is a schematic diagram of the mutual positional relationship between the first shell-shaped body and the second shell-shaped body of the dental instrument shown in FIG. 3 during occlusion . Wherein, the same reference numerals in FIG. 3 and FIG. 4 as those in FIG. 1 and FIG. 2 represent that the same elements have similar functions, and reference may be made to the related description of the above-mentioned embodiments of the present application, and no further details will be given.

3 and 4, the difference between the dental instrument 20 for adjusting the relationship between the upper and lower jaws of this embodiment and the dental instrument 10 for adjusting the relationship between the upper and lower jaws of this embodiment is that the second shell-shaped body 2 is also provided with a guide The portion 4 works together to limit the relative movement of the boss 3 to the limiter 5. The mesial direction surface 51 of the limiter 5 and the distal direction surface 33 of the boss 3 are provided with interacting contact surfaces to stabilize the adjusted The relationship between the upper and lower jaws; wherein, when the first shell-shaped body 1 interacts with the second shell-shaped body 2, the protrusion 3 is located between the guide 4 and the limiting portion 5.

In an alternative embodiment, the interaction contact surface provided between the mesial direction surface 51 of the limiting portion 5 and the distal direction surface 33 of the protrusion 3 is a non-smooth surface. Wherein, the above-mentioned "non-smooth surface" is a structure with a frosted surface, a structure with a convex point, a structure with a hollow surface, or a combination of one, two or more of the structure with a hole surface.

5, 6 and 7, there is shown a dental instrument 30 for adjusting the relationship between the upper and lower jaws according to an embodiment of the present application, wherein a recessed structure 52 is provided on the mesial direction surface 51 of the limiting portion 5, and the convex portion 3 A protruding structure 34 is provided on the distal surface 33 of the upper and lower jaws. When the upper and lower jaws are occluded, the protruding structure 34 snaps into the recessed structure 52, and the mesial direction surface 51 of the limiting portion 5 realizes the opposite to the distal direction surface 33 of the protruding portion 3. The limit. In actual use, the guide portion 4 guides the convex portion 3 to the holding portion 32 to stably contact the occlusal surface of the posterior region of the second shell-shaped body, and the concave structure 52 stably limits the protruding structure 34 on the convex portion 3, Thereby, the relative positional relationship between the protrusion 3 and the guide 4 is more stable. A raised portion 3 is provided on the first shell-shaped body 1, and a guide portion 4 and a limiting portion 5 are provided on the second shell-shaped body 2. After the upper and lower jaws are engaged, the raised portion 3 moves to On the basis that the predetermined position makes the holding portion 32 and the occlusal surface on the second shell-shaped body 2 stably contact, the guiding portion 4 and the limiting portion 5 clamp the protrusion 3 together, so that the occlusal relationship is more stable.

Since the contact surface between the mesial direction surface 31 of the protrusion 3 and the distal direction surface 41 of the guide portion 4 is a smooth surface, and the mesial direction surface 51 of the limiting portion 5 and the far center of the protrusion 3 The contact surface where the direction surface 33 interacts is a non-smooth surface, that is, the guide portion 4 induces the protrusion 3 to the occluding position, and the limiting portion 4 increases the friction with the protrusion 3 to prevent the protrusion 3 from being in the occluding position When sliding out, the guiding part 4 and the limiting part 5 cooperate with the protrusion 3, so that the occlusal relationship is more stable.

In an optional embodiment, the protrusion 3 and the limiting portion 5 are respectively provided with magnets that induce and adjust the relationship between the upper and lower jaws and have the same polarity. When the first shell-shaped body 1 interacts with the second shell-shaped body 2, the magnets with the same polarity in the protrusion 3 and the limiting part 5 can push the protrusion 3 to move in the mesial direction or make the protrusion 3 move in the mesial direction. It has a tendency to move in the mesial direction, thereby increasing the role of the first shell-shaped body 1 and the second shell-shaped body 2 to guide the lower jaw forward. Among them, the magnet can be bonded to the boss 3 or clamped and fixed. The magnet can be arranged on the interaction surface of the boss 3 or the limiting part 5, or it can be filled with the boss 3 and the limiting part 5. in.

In an optional embodiment, the protruding portion 3 and the guide portion 4 are respectively provided with magnets with a stable relative jaw position and opposite polarity, and the limiting portion 5 is provided with the same polarity as the protruding portion 3的magnets. When the first shell-shaped body 1 and the second shell-shaped body 2 interact, the magnets with opposite polarities in the protrusions 3 and the guide portion 4 can guide the first shell-shaped body 1 and the second shell-shaped body 2 to a proper position. Position, the magnets with the same polarity in the protrusion 3 and the limiting part 5 can push the protrusion 3 to move in the mesial direction or make the protrusion 3 have a tendency to move in the mesial direction, thereby increasing the first shell-shaped body 1 and the second shell-shaped body 2 guide the lower jaw forward.

It can be seen from the above that the

dental instruments

10, 20, and 30 for adjusting the relationship between the upper and lower jaws provided in the above embodiments of the present application are mainly used in Class II cases, by opening the posterior occlusion and guiding the lower jaw to move forward.

In addition, this application also provides another

dental instrument

40, 50, 60 for adjusting the relationship between the upper and lower jaws (refer to Figures 8 to 11), which is mainly used in Class III cases by opening the posterior occlusion and guiding the lower jaw to After moving.

8 is a partial schematic diagram of the mutual positional relationship between the first shell-shaped body and the second shell-shaped body of the dental instrument for adjusting the relationship between the upper and lower jaw positions according to an embodiment of the application. The same reference numerals in FIG. 8 as those in FIG. 1 and FIG. 2 represent that the same elements have similar functions, and reference may be made to the related descriptions of the above-mentioned embodiments of the present application, and no further details are provided.

Referring to FIG. 8, there is shown a dental instrument 40 for adjusting the relationship between the upper and lower jaws according to another embodiment of the present application, including a first shell-shaped body 1 for accommodating maxillary teeth and a second shell-shaped body 2 for accommodating lower teeth. The position of the occlusal surface of the posterior region of the shaped body 1 is provided with a protrusion 6 for inducing the adjustment of the relationship between the upper and lower jaws, and the position of the occlusal surface of the second shell-like body 2 is provided with a guide 7 at the position of the occlusal surface. The guide portion 7 guides the protrusion 6 to make the relationship between the upper and lower jaws normal; the distal direction surface 61 of the protrusion 6 and the mesial direction surface 71 of the guide portion 7 are provided with interacting contact surfaces to induce the adjustment of the upper and lower jaws. Position relationship; the convex portion 6 facing the occlusal surface is provided with a holding portion 62 that is in stable contact with the second shell-shaped body; when the first shell-shaped body 1 interacts with the second shell-shaped body 2, the guide portion 7 The mesial direction surface 71 guides the movement of the distal direction surface 61 of the protrusion 6, and at the same time, the protrusion 6 moves to a predetermined position so that the holding portion 62 is in stable contact with the occlusal surface on the second shell-shaped body 2.

In an alternative embodiment, the interacting contact surfaces provided on the distal direction surface 61 of the protrusion 6 and the mesial direction surface 71 of the guide portion 7 are in smooth contact. After the patient wears the above-mentioned dental instrument 40 for adjusting the upper and lower jaw positions, and performs occlusion, the protrusion 6 can be induced to move to a predetermined position through the smoothly contacting interaction surface. Among them, the distal direction surface 61 of the protrusion 6 and the mesial direction surface 71 of the guide portion 7 are, for example, a smooth plane, a smooth curved surface, or a smooth inclined surface, and the smooth plane, curved surface or inclined surface interacts and contacts to form the above-mentioned smooth contact. .

In an optional embodiment, the interaction contact surfaces provided on the mesial direction surface 61 of the protrusion 6 and the distal direction surface 71 of the guide portion 7 are non-smooth contact, and the non-smooth contact surface It has a friction structure, a concave-convex matching structure, a surface texture structure, etc. When the patient wears the above-mentioned dental instrument 1 for adjusting the upper and lower jaw position and performs occlusion, the protrusion 3 can be induced to move to a predetermined position through the non-smooth contact interaction surface without relative movement. Among them, the mesial direction surface 61 of the convex portion 6 and the distal direction surface 71 of the guide portion 7 are, for example, a non-smooth plane, a non-smooth curved surface, or a non-smooth inclined surface, and the non-smooth plane or curved surface or the inclined surface interacts in contact with each other. Form the aforementioned non-smooth contact.

In an alternative embodiment, the structure of the retaining portion 62 provided on the protruding portion 6 facing the occlusal surface of the opposite jaw has the same concave-convex structure with the same anatomical feature of the posterior occlusal surface of the second shell-shaped body 2. When the first shell-shaped body 1 interacts with the second shell-shaped body 2, the concave-convex structure on the surface of the retaining portion 62 on the protrusion 6 is the same as the anatomical features of the posterior occlusal surface of the second shell-shaped body 2, so that the retaining portion When 62 is in contact with the posterior region of the second shell-shaped body 2, a concave-convex structure with the same convex direction is formed, and the two are more closely combined. Alternatively, the convex portion 6 faces the structure of the retaining portion 62 provided on the occlusal surface of the opposite jaw and the concave-convex structure formed by the anatomical features of the occlusal surface of the posterior region of the first shell-shaped body 1 extending toward the opposite jaw. When the first shell-shaped body 1 interacts with the second shell-shaped body 2, the concave-convex structure on the surface of the retaining portion 62 on the protrusion 6 is the same as the anatomical features of the posterior occlusal surface of the first shell-shaped body 1, so that the retaining portion 62 When in contact with the posterior region of the second shell-shaped body 2, a concave-convex structure with different convex directions is formed, that is, the concave-convex structure formed in the opposing direction and the posterior region of the second shell-shaped body 2 form a cusp in a stable fit The occlusal concave-convex structure makes the two more closely integrated. Among them, the anatomical features of the occlusal surface refer to the concave-convex structure composed of the cusps, pits and fissures on the occlusal surface of the teeth.

In an optional embodiment, the structure of the holding portion 62 may also be one or two of a structure with a frosted surface, a structure with a bump, a structure with a hollow surface, or a structure with a hole surface. Or a combination of multiple. By adding a variety of structures that can increase friction on the holding part 62, it helps to make the holding part 62 and the occlusal surface on the second shell-shaped body 2 stably contact after the upper and lower jaws are engaged, and prevent the protrusion from opposing the guide part. Correction errors caused by movement.

In an optional embodiment, the rigidity of the protrusion 6 is greater than the rigidity of the first shell-shaped body 1 to accommodate the upper jaw teeth; the rigidity of the guide portion 7 is greater than the rigidity of the second shell-shaped body 2 to accommodate the lower teeth. In addition, the protrusion 6 is different from the first shell-shaped body 1 in at least one of the thickness, hardness, material, and layer characteristics of the upper jaw tooth area; the guide portion 7 and the second shell-shaped body 2 are different from the thickness of the mandibular tooth area, At least one of hardness, material, and number of layers is different. When the protrusion 6 and the guide 7 are convex cavities, when they interact, they are prone to deformation, which affects the correction effect. Increasing the rigidity of the protrusion 6 and the guide 7 can effectively prevent both The deformation caused by the interaction.

In addition, the hardness and/or elastic modulus of the holding portion 62 on the protrusion 6 is greater than the hardness and/or elastic modulus of the first shell-shaped body 1 to accommodate the maxillary teeth, because the protrusion 6 is provided in the first shell. The occlusal surface of the body 1, and the holding portion 62 is in contact with the second shell-shaped body 2, under the action of the occlusal force, it is prone to deformation and damage. Increasing the hardness and/or elastic modulus of the holding portion 62 can be effective Prevent the occurrence of the above phenomenon.

In the present application, by adjusting various physical parameters of the convex portion 6 and the retaining portion 62, it is helpful to extend the service life of the convex portion 6 and the retaining portion 62 and reduce wear.

In an alternative embodiment, the first shell-shaped body 1 is provided with a plurality of protrusions 6, and the second shell-shaped body 2 is provided with a plurality of guide parts 7, and the plurality of guide parts 7 and the plurality of protrusions The parts 6 correspond one-to-one, and the multiple protrusions 6 interact with the multiple guiding parts 7 to induce the adjustment of the upper and lower jaw positions to become normal. In a specific embodiment, the number of protrusions 6 is two, the number of guides 7 is two, and the two protrusions 6 are respectively provided on the left and right back teeth of the first shell-shaped body 1. In the dental area, the two guide portions 7 are respectively correspondingly arranged in the left posterior area and the right posterior area of the second shell-shaped body 2. It should be noted that when the number of protrusions 6 and the number of guides 7 are multiple respectively, the multiple protrusions 6 need to be distributed in the left and right tooth regions of the first shell-shaped body 1 at the same time. The guiding parts 7 need to be distributed in the left tooth area and the back tooth area of the second shell-shaped body 2 at the same time.

The multiple protrusions 6 interact with the multiple guides 7 to induce the adjustment of the upper and lower jaw positions to become normal. The multiple protrusions 6 interact with the multiple guides 7 and the force is stronger, making the first shell-shaped The main body 1 and the second shell-shaped main body 2 can better adjust the relationship between the upper and lower jaws to become normal. Specifically, when the first shell-shaped body 1 is provided with two protrusions 6 on the left and right cheeks, and the second shell-shaped body 2 is provided with two guides 7 on the left and right cheeks, the left side As an example, the left side of the first shell-shaped body 1 is provided with a front protrusion and a rear protrusion, and the left side of the second shell-shaped body 2 is provided with a front guide and a rear guide. Between the front limit part and the rear limit part, the front protrusion and the front limit part can be in contact or not in contact. When there is no contact, that is, the mesial surface of the front protrusion and the far center of the front limit part If the surfaces are not in contact, there is a certain distance between the two; when they are in contact, that is, the mesial surface of the front protrusion is in contact with the distal surface of the front limiting portion, and there is no distance between the two.

In other embodiments, the occlusal surfaces of the posterior regions of the first shell-shaped body 1 are respectively provided with an unequal number of protrusions 6 (not shown). Correspondingly, the occlusal surfaces of the second shell-shaped body 2 on both sides There are also unequal number of guides 7 (not shown) on the surface. The unequal number of protrusions 6 interact with the unequal number of guides 7 to induce the adjustment of the upper and lower jaw relationship to become normal, such as In this embodiment, the unequal number of protrusions 6 are provided on the left and right sides of the upper jaw with two, and the unequal number of guides 7 are provided with three on the left and right sides of the lower jaw; or the number of protrusions in this embodiment is unequal. The riser 6 is provided with two on the left and three on the right, and the number of guides 7 with different numbers is two on the left and three on the right.

In an optional embodiment, the length of the protrusion 6 in the mesio-distal direction of the dentition at least partially covers the length of the posterior tooth in the mesio-distal direction, for example, the protrusion 6 is in the mesio-distal direction of the dentition. The length of at least covers the length of one of the teeth in the posterior tooth region in the mesio-distal direction; the length of the guide portion 7 in the mesio-distal direction of the dentition at least partially covers the length of the canine in the mesio-distal direction. The raised portion 6 and the guide portion 7 formed in this embodiment can not only interact with the guide portion 7 to adjust the relationship between the upper and lower jaw positions, but also make the patient more comfortable to wear.

In an alternative embodiment, the protruding portion 6 and/or the guiding portion 7 are filled with a filling portion for enhancing the occlusal strength. The filling part is, for example, a polymer resin filled in the convex part 6 and/or the guide part 7. The filling part can fill the hollow part of the protrusion 6 and the guide part 7. By providing the filling part, the protrusion 6 and the guide part 7 can be prevented from being deformed or the degree of deformation of the protrusion 6 and the guide part 7 can be reduced. Prevent the effect of adjusting the relationship between the upper and lower jaw.

In an alternative embodiment, the protruding portion 6 and the guiding portion 7 are respectively provided with magnets that stabilize the relative jaw position and have opposite polarities. After the upper and lower jaws are occluded, the raised portion 6 moves to a predetermined position, and the raised portion 6 and the guide portion 7 are magnetically attracted by the magnetic attraction between magnets with opposite polarities, thereby helping to stabilize the relative position of the upper and lower jaws.

In an alternative embodiment, the protrusion 6 and the first shell-shaped body 1 are integrally formed; the guide portion 7 and the second shell-like body 2 are integrally formed. Among them, the protruding part 6 and the first shell-shaped body 1 are integrally formed by vacuum adsorption, or can be prepared by direct 3D printing; the guiding part 7 and the second shell-like body 2 are integrally formed by vacuum adsorption, or can be prepared by direct 3D printing . In addition, the protruding portion 6 communicates with the cavity for accommodating the upper teeth in the first shell-shaped body 1, and the guide portion 7 and the cavity for accommodating the lower teeth of the second shell-shaped body 2 communicate with each other. In other words, the protruding portion 6 and the guiding portion 7 are substantially hollow structures.

Fig. 9 is a partial schematic diagram of the mutual positional relationship between the first shell-shaped body and the second shell-shaped body of the dental appliance according to an embodiment of the application. Wherein, the same reference numerals in FIG. 9 and FIG. 8 represent that the same elements have similar functions, and reference may be made to the related descriptions of the above-mentioned embodiments of the present application, which will not be repeated.

9, there is shown a dental instrument 50 for adjusting the relationship between the upper and lower jaws according to another embodiment of the present application. The difference from the dental instrument 40 for adjusting the relationship between the upper and lower jaws described above is that the second shell-shaped body 2 is also provided with There is a limit part 8 that works with the guide part 7 to restrict the relative movement of the protrusion 6. The distal direction surface 81 of the limit part 8 and the mesial direction surface 63 of the protrusion 6 are provided with interacting contact surfaces to stabilize The adjusted upper and lower jaw position; wherein, when the first shell-shaped body 1 and the second shell-shaped body 2 interact, the protrusion 6 is located between the guide portion 7 and the limit portion 8.

In an alternative embodiment, the contact surface provided with interaction between the distal direction surface 81 of the limiting portion 8 and the mesial direction surface 63 of the protrusion 6 is a non-smooth surface. Wherein, the above-mentioned "non-smooth surface" is one, a combination of two or more of a structure with a frosted surface, a structure with a convex point, a structure with a hollow surface, or a structure with a hole surface.

10 and 11, there is shown a dental instrument 60 for adjusting the relationship between the upper and lower jaw positions according to an embodiment of the present application. A recessed structure 82 is provided on the distal surface 81 of the limiting portion 8 and the mesial direction of the convex portion 6 The surface 63 is provided with a protruding structure 64. When the upper and lower jaws are occluded, the protruding structure 64 snaps into the recessed structure 82, and the distal surface 81 of the limiting portion 8 realizes the limiting of the mesial surface 63 of the protruding portion 6 . In actual use, the guiding portion 7 guides the convex portion 6 to the holding portion 62 to stably contact the occlusal surface of the posterior region of the second shell-shaped body, and the concave structure 82 stably limits the convex structure 64 on the convex portion 6, and Thereby, the relative positional relationship between the convex portion 6 and the guide portion 7 is more stabilized. A raised portion 6 is provided on the first shell-shaped body 1, and a guide portion 7 and a limit portion 8 are provided on the second shell-shaped body 2. After the upper and lower jaws are engaged, the raised portion 6 moves to On the basis that the predetermined position makes the holding portion 62 and the occlusal surface on the second shell-shaped body 2 stably contact, the guide portion 7 and the limiting portion 8 clamp the protrusion 3 together to make the occlusal relationship more stable.

Since the contact surface between the distal direction surface 61 of the protrusion 6 and the mesial direction surface 71 of the guide portion 7 is a smooth surface, and the distal direction surface 81 of the limiting portion 8 and the mesial surface of the protrusion 6 The contact surface where the directional surface 63 interacts is a non-smooth surface, that is, the guide portion 7 induces the protrusion 6 to the occluding position, and the limiting portion 8 increases the friction with the protrusion 6 to prevent the protrusion 6 from being in the occluding position When sliding out, the guiding part 7 and the limiting part 8 cooperate with the protrusion 6 to make the occlusal relationship more stable.

In an optional embodiment, the protrusion 6 and the limiting portion 8 are respectively provided with magnets that induce and adjust the relationship between the upper and lower jaw positions and have the same polarity. When the first shell-shaped body 1 interacts with the second shell-shaped body 2, the magnets with the same polarity in the protrusion 6 and the limiting part 8 can push the protrusion 6 to move in the mesial direction or make the protrusion 6 move in the mesial direction. It has a tendency to move in the mesial direction, thereby increasing the role of the first shell-shaped body 1 and the second shell-shaped body 2 to guide the lower jaw forward. Among them, the magnet can be bonded to the protrusion 6 or clamped and fixed. The magnet can be arranged on the interaction surface of the protrusion 6 or the limiting portion 8, or it can be filled with the protrusion 6 and the limiting portion 8. in.

In an alternative embodiment, the protruding portion 6 and the guiding portion 7 are respectively provided with magnets with stable relative jaw positions and opposite polarities, and the limiting portion 8 is provided with the same polarity as the protruding portion 6的magnets. When the first shell-shaped body 1 and the second shell-shaped body 2 interact, the magnets with opposite polarities in the protrusion 6 and the guide part 7 can guide the first shell-shaped body 1 and the second shell-shaped body 2 to a proper position. Position, the magnets with the same polarity in the protrusion 6 and the limit part 8 can push the protrusion 6 to move in the mesial direction or make the protrusion 6 have a tendency to move in the mesial direction, thereby increasing the first shell-shaped body 1 and the second shell-shaped body 2 guide the mandible backward.

In one embodiment, the present application further provides a dental treatment system, including multiple sets of dental instruments for adjusting the relationship between the upper and lower jaws, wherein the multiple sets of dental instruments for adjusting the relationship between the upper and lower jaws include at least one set of the above-mentioned adjustments. The

dental instruments

10, 20, 30, 40, 50 and/or 60 of the mandibular position relationship, the multiple sets of

dental instruments

10, 20, 30, 40, 50 and/or 60 that adjust the mandibular position relationship have the ability to make the teeth from the initial The position is gradually repositioned to the geometric shape of the target treatment position.

In an optional embodiment, the protrusion heights of the protrusions 3 in the opposing direction and the protrusion heights of the guiding part 4 in the opposing direction provided on the dental instruments for adjusting the relationship between the upper and lower jaw positions of different groups follow the correction. The process gradually decreases. Or, the protrusion height of the protrusion 6 in the opposite jaw direction and the protrusion height of the guide 7 in the opposite jaw direction provided on the dental instruments for adjusting the relationship between the upper and lower jaw positions of different groups gradually decrease with the correction process.

Specifically, take the three stages of treatment of teeth as an example, each stage uses different dental instruments to correct the teeth, for example, the dental instruments used in the second stage of correction are those used after the first stage of correction. For example, the dental instrument used in the third stage of correction is the dental instrument used after the second stage of correction. The difference between the dental instruments used in the three stages is: the protrusions set on the dental instrument used in the second stage of correction 3 or 6, the protrusion height in the opposite jaw direction is smaller than the protrusion height 3 or 6 in the opposite jaw direction set on the dental instrument used in the first stage of correction, on the dental instrument used in the third correction stage The protrusion height of the protrusion 3 or 6 in the opposing direction is smaller than the protrusion height of the protrusion 3 or 6 in the opposing direction of the dental instrument used in the second correction stage. Of course, when performing dental correction, the patient needs to wear a series of shell-shaped dental instruments for correction, and the geometric shape of a series of shell-shaped dental instruments can be referred to the above examples. The above description is the adjustment method of the relationship between the upper and lower jaws. While adjusting the relationship between the jaws, it can also simultaneously correct the maloccluded teeth to achieve the simultaneous correction and correction. A pair of shell-shaped dental instruments can be worn for 7-14 days , According to the patient's different case types and complexity, a series of shell-shaped dental instruments are set up to achieve the corrective effect.

In summary, the dental instrument for adjusting the relationship between the upper and lower jaw and its orthodontic system provided by the present application adopts interactive raised jaw pads (corresponding protrusions and guides) provided in the upper and lower jaws, which can not only open the occlusion, but also It can induce mandibular extension or retraction, and the retaining structure on the occlusal surface of the maxillary pad increases friction, which can stabilize the positional relationship between the upper and lower jaws, and restrict the lower jaw to the protruding position or the rearward position while maintaining a relatively stable occlusal relationship. The purpose of the treatment, especially for Class II and Class III cases where the depth of the spee curve is greater than 3mm, has a better therapeutic effect.

In one embodiment, the present application also provides a method for designing a dental instrument for adjusting the relationship between the upper and lower jaw positions, which is used to obtain the first shell-shaped dental instrument and the second shell-shaped dental instrument as described above.

FIG. 12 is a flowchart of a design method of a dental instrument for adjusting the relationship between the upper and lower jaw positions provided by an embodiment of the application.

As shown in Figure 12, the design method for adjusting the relationship between the upper and lower jaw provided by this application includes:

S1; Obtain the first initial digital model of the dental jaw;

S2: Designing a protrusion model on the occlusal surface of the posterior area of the first initial digital model of the dental jaw, which specifically includes acquiring the characteristic information of the protrusion; wherein the characteristic information of the protrusion includes the information of the protrusion Size and preset position, and the protrusions are arranged to match the occlusal surface of the occlusal surface of the opposing tooth with the concave-convex surface of the posterior area of the opposing tooth or to match the occlusal surface of the occlusal surface of the posterior area of the opposing tooth;

S3: Based on the first initial digital dental model and the convex part model, generating a first digital dental model with a convex part;

S4: Design a first shell-shaped dental instrument based on the first dentition digital model, so that the first shell-shaped dental instrument has a shell shape with a cavity for accommodating a first dentition, and the first shell shape The posterior tooth area of the dental instrument has a protrusion protruding in the opposite jaw direction, and the protrusion includes a mesial surface of the protrusion and a distal surface of the protrusion;

S5: Obtain the second initial digital model of the dental jaw;

S6: Designing a guide part model on the occlusal surface of the second initial digital dental model, which specifically includes acquiring the guide part characteristic information; wherein the guide part characteristic information includes the size and preset position of the guide part;

S7: Based on the second initial digital dental model and the guide model, a second digital dental model with a guide is generated;

S8: Design the second shell-shaped dental instrument according to the second dentition digital model, so that the second shell-shaped dental instrument has a shell shape with a cavity for accommodating a second dentition, and the second The shell-shaped dental instrument has a guide part that cooperates with the protrusion of the first shell-shaped dental instrument, and the guide part includes a mesial surface of the guide part and a distal surface of the guide part;

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

When the first shell-shaped body interacts with the second shell-shaped body, the guide portion guides the protrusion to move, and at the same time, the protrusion moves to a predetermined position so that the holding portion and the The occlusal surfaces on the second shell-shaped body are in stable contact.

It should be noted that the execution of the foregoing S1 to S4 may be performed synchronously with the execution of the foregoing S5 to S8, or the foregoing S5 to S8 may be executed before the foregoing S1 to S4. In other words, the design of the first shell-shaped dental appliance and the second shell-shaped dental appliance described in this application does not have a restriction on the design sequence.

In an optional embodiment, the distal surface of the guide portion guides the protruding portion to move in the proximal direction to induce mandibular advancement, which can effectively treat Class II cases;

In an optional embodiment, the guide portion guides the protruding portion to move in the distal direction to induce mandibular retraction, which can effectively treat Class III cases.

In an optional embodiment, the above-mentioned design method further includes S9, and the S9 includes: in the process of designing the second shell-shaped dental instrument by the second dental jaw digital model, the step of designing a limit part is further included to The designed dental instrument is configured to restrict the relative movement of the protrusion through the restricting portion and the guide portion, wherein the restricting portion includes a proximal surface of the restricting portion and a distal surface of the restricting portion.

In an optional embodiment, the proximal surface of the limiting portion and the distal surface of the protrusion are provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw relationship to induce mandibular advancement, which can effectively The treatment of Angle class II cases.

In another optional embodiment, the distal surface of the limiting portion and the mesial surface of the protruding portion are provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw relationship, so as to induce the retraction of the mandible. Effective treatment of Class III cases.

In one embodiment, the present application also provides a method for preparing a dental instrument that adjusts the relationship between the upper and lower jaw positions. Based on the above-mentioned design method, the designed dental instrument is prepared for corresponding preparation, and the preparation method includes: preparation of hot press molding Method or direct 3D printing method.

In one embodiment, the production module in the preparation method may be an additive manufacturing machine, which adopts additive manufacturing technology to prepare shell-shaped dental instruments, that is, 3D printing technology is used to obtain finite element numbers of shell-shaped dental instruments that meet the requirements. After the model is printed directly into a shell-shaped dental instrument, the 3D printing technology can be SLA (Stereoscopic Light Curing Molding) or DLP (Digital Light Projection).

In another embodiment, the production module in the preparation method can also be 3D printing equipment, laminating equipment, cutting equipment, polishing equipment, and cleaning and disinfection equipment. The specific preparation process is to first use 3D printing technology to convert digital teeth that meet the requirements. The finite element digital model of the jaw model is directly printed, and then the film is pressed on the printed 3D dental model, and finally the shell-shaped dental instrument with the film is cut, polished, cleaned, and disinfected, and the shell is finally made Shaped dental instruments.

Although the embodiments of the present application are described in detail above, it is obvious to those skilled in the art that various modifications and changes can be made to these embodiments. However, it should be understood that such modifications and changes fall within the scope and spirit of the application described in the claims. Moreover, the application described here may have other embodiments, and may be implemented or realized in various ways.

Claims

A dental instrument for adjusting the relationship between the upper and lower jaws, comprising a first shell-shaped body accommodating upper jaw teeth and a second shell-shaped body accommodating lower jaw teeth, and is characterized in that,

The position of the occlusal surface of the posterior region of the first shell-shaped body protrudes toward the opposite jaw and is provided with a protrusion that induces and adjusts the relationship between the upper and lower jaw;

The position of the occlusal surface of the second shell-shaped body is provided with a guiding part that guides the protrusion to make the relationship between the upper and lower jaw tend to be normal;

Wherein, the mesial surface of the protrusion and the distal surface of the guide portion are provided with interacting contact surfaces to induce and adjust the relationship between the upper and lower jaw positions; and the protrusion is provided on the occlusal surface facing the opposite jaw. Having a holding portion that is in stable contact with the second shell-shaped body;

Wherein, when the first shell-shaped body interacts with the second shell-shaped body, the distal direction surface of the guide portion guides the mesial direction surface movement of the protrusion, and at the same time, the protrusion The movement of the part to a predetermined position enables the holding part to stably contact the occlusal surface on the second shell-shaped body.
The dental instrument for adjusting the relationship between the upper and lower jaw positions according to claim 1, wherein the interaction contact surface provided on the mesial direction surface of the protruding part and the distal direction surface of the guide part is smooth Contact or non-smooth contact.
The dental instrument for adjusting the relationship between the upper and lower jaw positions according to claim 1, wherein the structure of the holding portion is a concave-convex structure with the same anatomical characteristics of the occlusal surface of the posterior region of the second shell-shaped body; or, The structure of the holding portion is a concave-convex structure formed by the anatomical features of the occlusal surface of the posterior tooth region of the first shell-shaped body extending in the opposing direction.
The dental instrument for adjusting the relationship between the upper and lower jaw positions of claim 1, wherein the structure of the holding portion is a structure with a matte surface, a structure with a convex point, a structure with a hollow surface, or a structure with a hole A combination of one, two or more of the surface structure.
The dental instrument for adjusting the relationship between the upper and lower jaws according to claim 1, wherein the rigidity of the protrusion is greater than the rigidity of the region where the first shell-shaped body accommodates the maxillary teeth; the rigidity of the guide portion is greater than the rigidity of the upper jaw The second shell-shaped body accommodates the rigidity of the mandibular tooth region.
The dental instrument for adjusting the relationship between the upper and lower jaw positions of claim 5, wherein the protrusion and the first shell-shaped body accommodate at least one of the thickness, hardness, material, and number of layers of the upper jaw tooth area Different; at least one of the thickness, hardness, material, and number of layers of the guide portion and the second shell-shaped body accommodating the mandibular tooth area is different.
The dental instrument for adjusting the relationship between the upper and lower jaws according to claim 1, wherein the hardness and/or elastic modulus of the holding portion on the protrusion is greater than that of the first shell-shaped body accommodating the upper jaw teeth. Hardness and/or modulus of elasticity.
The dental instrument for adjusting the relationship between the upper and lower jaw positions according to claim 1, wherein the second shell-shaped body is further provided with a limit part that cooperates with the guide part to limit the relative movement of the raised part , The mesial direction surface of the limiting portion and the distal direction surface of the protrusion are provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw relationship; the first shell-shaped body and the first When the two shell-shaped bodies interact, the protruding portion is located between the guiding portion and the limiting portion.
The dental instrument for adjusting the relationship between the upper and lower jaws according to claim 8, wherein the interaction contact surface provided on the mesial direction surface of the limiting portion and the distal direction surface of the protrusion is Non-smooth surface.
The dental instrument for adjusting the relationship between the upper and lower jaws according to claim 9, wherein the non-smooth surface is a structure with a frosted surface, a structure with a convex point, a structure with a hollow surface, or a structure with holes A combination of one, two or more of the surface structure.
The dental instrument for adjusting the relationship between the upper and lower jaws according to claim 9, wherein the protrusion and the limiting portion are respectively provided with magnets that induce the adjustment of the relationship between the upper and lower jaws and have the same polarity; or, The protruding part and the guiding part are respectively provided with magnets with stable relative jaw positions and opposite polarities, and the limiting part is provided with magnets with the same polarity as in the protruding part.
The dental instrument for adjusting the relationship between the upper and lower jaw positions of claim 1, wherein the first shell-shaped body is provided with a plurality of the protrusions, and the second shell-shaped body is provided with a plurality of protrusions. The guide part interacting with the protrusion, the plurality of protrusions interact with the plurality of guide parts to induce the adjustment of the mandibular position relationship to become normal.
The dental instrument for adjusting the relationship between the upper and lower jaw positions according to claim 1, wherein the length of the protrusion along the mesiodistal direction of the dentition at least partially covers the length of the posterior teeth in the mesiodistal direction; The length of the guide portion in the mesio-distal direction of the dentition at least partially covers the length of the canine in the mesio-distal direction.
The dental instrument for adjusting the relationship between the upper and lower jaws according to claim 1, wherein the protrusion and/or the guiding part are filled with a filling part for enhancing occlusal strength.
The dental instrument for adjusting the relationship between the upper and lower jaw positions according to claim 1, wherein the protruding portion and the guiding portion are respectively provided with magnets that stabilize the relative jaw position relationship and have opposite polarities.
The dental instrument for adjusting the relationship between the upper and lower jaw positions of claim 1, wherein the protrusion and the first shell-shaped body are integrally formed; the guide portion and the second shell-like body are integrally formed .
A dental instrument for adjusting the relationship between the upper and lower jaws, comprising a first shell-shaped body accommodating upper jaw teeth and a second shell-shaped body accommodating lower jaw teeth, and is characterized in that,

The position of the occlusal surface of the posterior region of the first shell-shaped body protrudes toward the opposite jaw and is provided with a protrusion that induces and adjusts the relationship between the upper and lower jaw;

The position of the occlusal surface of the second shell-shaped body is provided with a guiding part that guides the protrusion to make the relationship between the upper and lower jaw tend to be normal;

Wherein, the distal direction surface of the convex portion and the mesial direction surface of the guide portion are provided with interacting contact surfaces to induce and adjust the relationship between the upper and lower jaw positions; and the convex portion is provided at the occlusal surface facing the opposite jaw. Having a holding portion that is in stable contact with the second shell-shaped body;

Wherein, when the first shell-shaped body interacts with the second shell-shaped body, the mesial direction surface of the guide portion guides the movement of the distal direction surface of the protrusion, and at the same time, the protrusion The movement of the part to a predetermined position enables the holding part to stably contact the occlusal surface on the second shell-shaped body.
The dental instrument for adjusting the relationship between the upper and lower jaw positions according to claim 17, wherein the interacting contact surfaces provided in the distal direction of the protrusion and the mesial direction of the guide portion are smooth contact or Non-smooth contact.
The dental instrument for adjusting the relationship between the upper and lower jaw positions according to claim 17, wherein the structure of the holding portion is a concave-convex structure with the same anatomical characteristics of the occlusal surface of the posterior region of the second shell-shaped body; or, The structure of the holding portion is a concave-convex structure formed by the anatomical features of the occlusal surface of the posterior tooth region of the first shell-shaped body extending in the opposing direction.
The dental instrument for adjusting the relationship between the upper and lower jaws according to claim 17, wherein the rigidity of the protrusion is greater than the rigidity of the area where the first shell-shaped body accommodates the maxillary teeth; the rigidity of the guide portion is greater than the rigidity of the upper jaw tooth. The second shell-shaped body accommodates the rigidity of the mandibular tooth region.
The dental instrument for adjusting the relationship between the upper and lower jaw positions of claim 20, wherein the protrusion and the first shell-shaped body accommodate at least one of the thickness, hardness, material, and number of layers of the upper jaw tooth area Different; at least one of the thickness, hardness, material, and number of layers of the guide portion and the second shell-shaped body accommodating the mandibular tooth area is different.
The dental instrument for adjusting the relationship between the upper and lower jaw positions according to claim 17, wherein the hardness and/or elastic modulus of the holding portion on the protruding portion is greater than the hardness of the area where the first shell-shaped body accommodates the maxillary teeth And/or modulus of elasticity.
The dental instrument for adjusting the relationship between the upper and lower jaw positions according to claim 17, wherein the second shell-shaped body is further provided with a limiting portion that cooperates with the guide portion to restrict the relative movement of the protrusion portion , The distal direction surface of the limiting portion and the mesial direction surface of the protrusion are provided with interacting contact surfaces to stabilize the adjusted upper and lower jaw relationship; the first shell-shaped body and the first When the two shell-shaped bodies interact, the protruding portion is located between the guiding portion and the limiting portion.
The dental instrument for adjusting the relationship between the upper and lower jaws according to claim 23, wherein the distal surface of the limiting portion and the mesial surface of the protrusion are provided with interacting contact surfaces It is a non-smooth surface.
The dental instrument for adjusting the relationship between the upper and lower jaws of claim 24, wherein the non-smooth surface is a structure with a matte surface, a structure with a convex point, a structure with a hollow surface, or a structure with holes A combination of one, two or more of the surface structure.
The dental instrument for adjusting the upper and lower jaw positions according to claim 23, wherein the protrusion and the limiting portion are respectively provided with magnets that induce the adjustment of the upper and lower jaw positions and have the same polarity; or, The protruding part and the guiding part are respectively provided with magnets with stable relative jaw positions and opposite polarities, and the limiting part is provided with magnets with the same polarity as in the protruding part.
The dental instrument for adjusting the relationship between the upper and lower jaw positions of claim 17, wherein the first shell-shaped body is provided with a plurality of the protrusions, and the second shell-shaped body is provided with a plurality of protrusions. The guide part interacting with the protrusion, the plurality of protrusions interact with the plurality of guide parts to induce the adjustment of the mandibular position relationship to become normal.
The dental appliance for adjusting the relationship between the upper and lower jaw positions according to claim 17, wherein the length of the protrusion along the mesiodistal direction of the dentition at least partially covers the length of the posterior teeth in the mesiodistal direction; The length of the guide portion in the mesio-distal direction of the dentition at least partially covers the length of the canine in the mesio-distal direction.
The dental instrument for adjusting the relationship between the upper and lower jaw positions according to claim 17, wherein the protrusion and/or the guide part are filled with a filling part for strengthening the occlusal strength.
The dental appliance for adjusting the upper and lower jaw position relationship according to claim 17, wherein the protruding portion and the guide portion are respectively provided with magnets that stabilize the relative jaw position relationship and have opposite polarities.
The dental instrument for adjusting the relationship between the upper and lower jaw positions of claim 17, wherein the protrusion and the first shell-shaped body are integrally formed; the guide portion and the second shell-like body are integrally formed .
A design method for adjusting the relationship between the upper and lower jaw positions, which is characterized in that:

Acquire the first initial digital model of the dental jaw;

Designing a protrusion model on the occlusal surface of the posterior area of the first initial digital dental model includes acquiring characteristic information of the protrusion; wherein the characteristic information of the protrusion includes the size and A preset position, and the protrusions are arranged to match the occlusal surface of the antagonist teeth with the concave-convex surface of the posterior area of the opposite teeth or to match the occlusal surface of the occlusal surface of the posterior area of the opposite teeth;

Generating a first digital dental model with a raised portion based on the first initial digital dental model and the raised portion model;

A first shell-shaped dental instrument is designed based on the first dentition digital model, so that the first shell-shaped dental instrument has a shell shape with a cavity for accommodating a first dentition, and the first shell-shaped dental instrument The posterior tooth area has a protrusion protruding in the opposite jaw direction, and the protrusion includes a mesial surface of the protrusion and a distal surface of the protrusion;

Acquire the second initial digital model of the dental jaw;

Designing a guide part model on the occlusal surface of the second initial dental jaw digital model, which specifically includes acquiring the guide part characteristic information; wherein the guide part characteristic information includes the size and preset position of the guide part;

Based on the second initial digital dental model and the guide model, generating a second digital dental model with a guide;

The second shell-shaped dental instrument is designed based on the second dentition digital model so that the second shell-shaped dental instrument has a shell shape with a cavity for accommodating a second dentition, and the second shell shape The dental instrument has a guide part that cooperates with the protrusion of the first shell-shaped dental instrument, and the guide part includes a proximal surface of the guide portion and a distal surface of the guide portion;

Wherein, the first shell-shaped dental instrument and the second shell-shaped dental instrument are the first shell-shaped body for accommodating the upper teeth and the second shell-shaped body for accommodating the lower teeth according to claim 1 or 17, respectively;

When the first shell-shaped body interacts with the second shell-shaped body, the guide portion guides the protrusion to move, and at the same time, the protrusion moves to a predetermined position so that the holding portion and the The occlusal surface on the second shell body is in stable contact.
The design method of a dental instrument for adjusting the relationship between the upper and lower jaw positions according to claim 32, wherein the design of the second shell-shaped dental instrument by the second dentition digital model further includes the step of designing a limit part, In order to make the designed dental instrument restrict the relative movement of the protruding portion through the restricting portion and the guide portion, the restricting portion includes a proximal surface of the restricting portion and a distal surface of the restricting portion.
A method for preparing dental instruments for adjusting the relationship between the upper and lower jaws, characterized in that: the dental instruments are prepared based on the design method of claim 32, and the preparation method comprises: a preparation method of hot press molding or a direct 3D printing method.