WO2023231904A1

WO2023231904A1 - Dental instrument and orthodontic system

Info

Publication number: WO2023231904A1
Application number: PCT/CN2023/096356
Authority: WO
Inventors: 吴刚; 王星星; 吴姗姗; 姚峻峰
Original assignee: 正雅齿科科技(上海)有限公司
Priority date: 2022-06-02
Filing date: 2023-05-25
Publication date: 2023-12-07
Also published as: CN218009995U

Abstract

A dental instrument and orthodontic system, comprising: a first shell-shaped body (10) for accommodating maxillary teeth and a second shell-shaped body (20) for accommodating mandibular teeth. The buccal or lingual side of the posterior tooth area of the first shell-shaped body (10) is provided with a first type of protrusion (11), and the buccal or lingual side of the posterior tooth area of the second shell-shaped body (20) is provided with a limiting part (21) that cooperates with the first type of protrusion (11). The first type of protrusion (11) and the limiting part (21) interact with each other to adjust the relative positional relationship between the upper and lower jaws. The occlusal surface of the posterior tooth area of the first shell-shaped body (10) or the second shell-shaped body (20) is provided with a second type of protrusion (12) that protrudes toward the opposite jaw. The height of the second type of protrusion (12) compensates for the jaw opening space formed in the posterior tooth area after the interaction between the first type of protrusion (11) and the limiting part (21) to stabilize the occlusion state.

Description

A kind of dental instrument and tooth correction system

Cross-references to related applications

This application is filed based on a Chinese patent application with application number “202221364936.9” and a filing date of June 2, 2022, and claims the priority of the above-mentioned Chinese patent application. The entire content of the above-mentioned Chinese patent application is hereby incorporated by reference. Apply.

Technical field

The embodiments of the present application belong to the field of dental orthodontic technology, more specifically to dental appliance manufacturing technology, and in particular to a dental appliance and a dental orthodontic system.

Background technique

Malocclusion refers to the imbalance in the position and relationship of teeth, dental arches, jaws, and craniofacial faces. Common symptoms include crowding of teeth, gaps between teeth, crossbite, etc. Most malocclusions are caused by congenital genetic factors or acquired environmental factors during the growth and development of children, such as diseases, bad oral habits, tooth replacement disorders, etc. They can also be caused by trauma, periodontal disease, etc. after growth and development. Causes include misaligned teeth, abnormal occlusal relationship between the upper and lower dental arches, abnormal jaw size, shape and position, facial deformities, etc.

Shell-shaped dental braces are a device used to treat malocclusion. They are made of safe, elastic and transparent polymer materials, allowing the correction process to be completed almost unnoticed by others. For cases of protruding face deformity involving sagittal jaw position factors, it is necessary to correct the jaw position through jaw position reconstruction to achieve mandibular advancement. According to different indications, the existing invisible braces commonly used for jaw position reconstruction are divided into two types: TB (abbreviation for Twin-block) and HB (abbreviation for Herbst). The main difference between the two types is whether the case has a deep overbite. If there is a deep overbite, TB will be selected. If there is no deep overbite and there is only deep overbite, HB will be selected. However, clinically, in some cases of arthrogenic mandibular recession, the posterior teeth will have a partial opening of 1-4mm due to curve problems after protrusion. At this time, simply using the HB appliance protrusion will cause the contact area of the posterior teeth to be too small. The problem of unstable jaw position, even due to the open jaw in the back teeth area, affects eating while wearing braces.

The "jaw" in "malocclusion", "open jaw", "overbite", "maxillofacial", etc. in this application are all rare characters ("occlusion", hé), and due to the general input method character library Without this word, it is often referred to as "gna" in daily life and on the Internet. In this article, for the convenience of reading, it is also written as "gna".

Utility model content

The technical problem solved by the embodiments of the present application is to overcome the defects existing in the prior art and provide a dental instrument and a dental correction system, so that under the action of the dental instrument, not only the relationship between the upper and lower jaws can be adjusted to normal, but also the wearing capacity can be increased at the same time. After the bite stability, try to improve the wearing comfort.

The technical solution provided by the embodiments of the present application at least includes: a dental instrument, including: a first shell-like body for accommodating maxillary teeth and a second shell-like body for accommodating mandibular teeth. The posterior teeth area of the first shell-like body is On the buccal or lingual side A first type of protruding part is provided, and a limiting part used in conjunction with the first type of protruding part is provided on the buccal or lingual side of the posterior tooth area of the second shell-shaped body, and the first type of protruding part is The raised portion interacts with the limiting portion to adjust the relative positional relationship between the upper and lower jaws; the occlusal surface of the posterior region of the first shell-shaped body or the second shell-shaped body is provided with an occlusal surface facing toward the opposite jaw. The protruding second type of protruding part, the protruding height of the second type of protruding part compensates for the jaw opening space formed by the interaction between the first type of protruding part and the limiting part to stabilize the jaw opening. Occlusion status.

The technical solution provided by the embodiment of the present application at least also includes: a dental orthodontic system, including the above-mentioned multiple sets of dental instruments, and the multiple sets of dental instruments include at least one set of the above-mentioned dental instruments.

The embodiments of the present application adopt the above technical solutions, which at least have the following advantages and beneficial effects: a first type of protrusion is provided on the buccal or lingual side of the posterior tooth area corresponding to the first shell-shaped body of the maxilla; The buccal or lingual side of the posterior tooth area of the second shell-shaped body corresponding to the mandible is provided with a limiting portion used in conjunction with the above-mentioned first type of protruding portion. Through the interaction of the first type of protruding portion and the limiting portion, Adjust the relative positional relationship between the upper and lower jaws to gradually trend the jaw positions to achieve the correct occlusal relationship. A second type of protrusion is further provided on the occlusal surface of the posterior tooth area of the shell-shaped body to compensate for the open jaw space that occurs in the posterior tooth area when adjusting the relationship between the jaws. Through the contact between the second type of protrusion and the opposing jaw, Increase the contact area of the posterior teeth when biting, thereby increasing the bite stability and improving the wearer's chewing experience.

In some embodiments, the first type of protrusion extends toward the second shell-shaped body along the gingival and maxillary direction, at least partially covering the buccal side of the second shell-like body, and the limiting portion extends along the gingival and maxillary direction. Extends toward the first shell-like body and at least partially covers the buccal side of the first shell-like body; the mesial surface of the first type of protruding part interacts with the distal surface of the limiting part to sagittal The relative positional relationship between the upper and lower jaws is adjusted in the sagittal direction, or the distal surface of the first type of protrusion interacts with the mesial surface of the limiting part to adjust the relative positional relationship between the upper and lower jaws in the sagittal direction. The position and structure of the first-type protruding part and the limiting part are clarified, so that the first-type protruding part and the limiting part interact to adjust the relative positional relationship between the upper and lower jaws in the sagittal direction.

In some embodiments, the second type of protrusion covers at least one tooth on the shell-like body located in the jaw opening space. The second type of protrusion is defined to cover at least one tooth so as to increase sufficient contact area to ensure the stability of the bite.

In some embodiments, the jaw opening space includes a corresponding space for the second molar, and the second type of protrusion covers at least one of the shell-shaped bodies located in the jaw opening space except for the second molar. teeth. The second type of protruding part is limited to not cover the second molar. Since the second molar is the last tooth, not having the second type of protruding part can not only avoid affecting the opening of the teeth, but also prevent the shell-like body from falling off during wearing. .

In some embodiments, the tooth position provided by the second type of protruding portion is different from the tooth position provided by the first type of protruding portion. Limit various types of protrusions to be located at different tooth positions to avoid too many accessories on the same tooth position and to maintain the rough uniformity of the appliance diaphragm.

In some embodiments, the first type of protrusions and the second type of protrusions are both disposed on the first shell-shaped body, and the second type of protrusions are disposed at the same tooth position as the third type of protrusions. The teeth of a type of raised portion are arranged adjacent to each other. Set on adjacent teeth, the adjustment of the inter-jaw relationship is close to the position of stabilizing the bite, which is more conducive to stabilizing the bite.

In some embodiments, the second type of protrusion is disposed corresponding to the occlusal surface of the corresponding teeth of the opposite jaw. Defining the position of the second type of protrusion corresponds to the occlusal surface of the corresponding teeth of the opposite jaw, so that the support force is better and the bite is more stable.

In some embodiments, when the first shell-like body interacts with the second shell-like body, the occlusal surface of the second type of protrusion matches the occlusal surface of the corresponding teeth of the opposing jaw. The concave and convex matching of the occlusal surface is limited to further increase the contact area during occlusion to stabilize the occlusion state.

In some embodiments, the second type of protruding portion is provided with a reinforcing structure to enhance the strength of the second type of protruding portion. It is limited to provide a reinforcing structure for the second type of protrusions to increase the strength and avoid damage to the second type of protrusions.

In some embodiments, the reinforcing structure is a reinforcing rib provided on the buccal side and/or the lingual side of the second type of protrusion. Reinforcing ribs are clearly used as the reinforcing structure. Since the reinforcing ribs can be formed in one step during lamination and other processes, the design of the reinforcing ribs can reduce changes in the processing process and adapt to existing steps.

In some embodiments, the second type of raised portion is a hollow structure, and the reinforcing structure is a filling body built into the second type of raised portion. The method is simple and effective to increase the strength of the second type of protrusions by building a filler into the hollow structure.

In some embodiments, the elastic modulus of the material of the first type of protrusions and/or the second type of protrusions is greater than the elastic modulus of the material of the first shell-like body. By selecting materials with different elastic modulus, the strength of the raised portion is enhanced.

In some embodiments, the heights of the second type of protrusions along the long axis of the teeth in at least two sets of the dental instruments are inconsistent. It is limited to the process of orthodontic treatment. If the height of the jaw opening space changes as the orthodontic treatment progresses, then the height of the second type of protrusion along the long axis direction of the tooth can be set to change.

Description of the drawings

Figure 1 is a schematic diagram of a first shell-shaped body in a dental instrument according to an embodiment of the present application;

Figure 2 is a schematic diagram of a second shell-shaped body in a dental instrument according to an embodiment of the present application;

Figure 3 is a side view of the first shell-shaped body and the second shell-shaped body of the dental instrument in an engaged state according to an embodiment of the present application;

Figure 4 is a partial schematic diagram of the connection portion between the first type of protrusion and the first shell-shaped body in an embodiment of the present application;

Figure 5 is a side view of the first shell-shaped body and the second shell-shaped body of the dental instrument in an engaged state according to an embodiment of the present application;

Figure 6 is a schematic diagram of the first shell-shaped body of the dental instrument according to an embodiment of the present application;

Figure 7 is a schematic diagram of the first shell-shaped body of the dental instrument according to an embodiment of the present application;

Figure 8 is a side view of the first shell-shaped body and the second shell-shaped body of the dental instrument in an engaged state according to an embodiment of the present application;

Figure 9 is a schematic diagram of the first shell-shaped body of the dental instrument in one embodiment of the present invention;

Figure 10 is a schematic diagram of the first shell-shaped body of the dental instrument in an embodiment of the present application;

Figure 11 is a schematic diagram of the first shell-shaped body of the dental instrument according to an embodiment of the present application;

Figure 12 is a schematic diagram of the second shell-shaped body of the dental instrument according to an embodiment of the present application.

Detailed ways

In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, the specific implementation manner of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings in the following description are only some embodiments of the present application. If there is no conflict, the embodiments and the technical features in the embodiments can be combined with each other. For those of ordinary skill in the art, , without exerting any creative effort, other drawings can also be obtained based on these drawings, and other implementation modes can be obtained.

In order to keep the drawings concise, only the parts related to the present application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to make the drawings concise and easy to understand, in some drawings, only one of the components with the same structure or function is schematically illustrated or labeled. In this article, "a" not only means "only one", but can also mean "more than one".

One embodiment of the present application provides a dental instrument. As shown in Figures 1 and 2, the dental instrument includes: a first shell-shaped body 10 for accommodating maxillary teeth and a second shell-shaped body 20 for accommodating mandibular teeth, wherein the buccal surface of the posterior tooth area of the first shell-shaped body 10 A first type of protruding part 11 is provided on the second shell-shaped body 20 on the buccal side of the posterior tooth area. A limiting part 21 used in conjunction with the first type of protruding part 11 is provided on the buccal side. The first type of protruding part 11 It interacts with the limiting portion 21 to adjust the relative positional relationship between the upper and lower jaws.

First, the related terms mentioned are explained as follows. "Posterior tooth area" is defined according to the classification of teeth on pages 36-38 of the second edition of "Introduction to Oral Medicine" published by Peking University Medical Press, including premolars and molars. , teeth 4-8 are shown by FDI labeling, and teeth 1-3 are shown by FDI labeling in the anterior region. Moreover, the mesial surface and the distal surface are the two surfaces where the crown of the tooth is adjacent to the adjacent teeth, and are collectively referred to as the adjacent surfaces. The side closer to the midline of the face is called the mesial face, and the side farther from the midline of the face is called the distal face. In addition, the sagittal plane is an anatomical term. The human body is divided into left and right parts. The left and right sections are called the sagittal plane, and the equal sections on the left and right are called the midsagittal plane. According to the terms of medical imaging technology published in 2020, the sagittal direction is the direction in which the center line of the X-ray enters from the front or back of the subject's body and is parallel to the sagittal plane.

As shown in FIG. 3 , in some embodiments, the first type of protrusion 11 extends toward the second shell-like body 20 along the gingival and jaw direction, at least partially covering the buccal side of the second shell-like body 20 , and the limiting portion 21 extends along the gingival and jaw direction. The direction extends toward the first shell-like body 10 and at least partially covers the buccal side of the first shell-like body 10; the mesial surface 112 of the first type of protruding portion 11 interacts with the distal surface 211 of the limiting portion 21 to in the sagittal direction. Adjust the relative position of the upper and lower jaws in the direction. It can be seen that the buccal surfaces on both sides can be set separately The first-type protruding portion 11 and the cooperating limiting portion 21 guide the teeth and jaws from both sides, and can also work together from both sides to stabilize the occlusion state.

In some embodiments, the first type of protruding part 11 and the limiting part 21 are fang-shaped. The part close to the shell-like body can be called the root, and the part far away from the root can be called the tip. In practice, In application, the base of the first type of protruding portion 11 and the limiting portion 21 gradually narrows toward the tip. In some embodiments, the gingival end of the first type of protrusion 11 can be flush with the gingival margin line, and the tip is set toward the opposing teeth. The gingival end of the limiting portion 21 can be flush with the gingival margin line, and the tip is directed toward the opposing teeth. It is provided that the long axis directions of the first type protruding portion 11 and the limiting portion 21 are parallel. It is worth mentioning that the combination part of the first type of protruding part 11 and the limiting part 21 and the shell-shaped body cannot be higher than the occlusal surface (also called the jaw surface), as shown by the dotted circle A in Figure 4. The first type of protruding portion 11 and the limiting portion 21 respectively extending from the upper and lower jaws can interact with each other during the wearer's bite process. The limiting part 21 exerts a sagittal upward and forward force, and the limiting part 21 of the second shell-shaped body 20 exerts a sagittal upward and backward force on the first type of protruding part 11 to help the teeth according to the trend of the above force. Restoring the correct position to achieve the purpose of treating malocclusion.

It is worth mentioning that during the design, the inner side of the extended part does not collide with the opposing teeth, the extended part does not collide with the tips of the opposing teeth, and the tips of the extended parts of the upper and lower jaws do not collide, so as to avoid hindering the bite process.

In some embodiments, as shown in FIG. 5 , the first type of protruding portion 11 on the first shell-like body 10 and the limiting portion 21 on the second shell-like body 20 can be reinforced with concave and convex structures on the buccal side. The ribs 111 and the reinforcing ribs 111 are arranged along the long axis direction of the teeth to enhance the strength of the first type protruding portion 11 and the limiting portion 21 to avoid damage during bite or interaction.

Continuing to explain, in some embodiments, the first shell-like body 10 is provided with a second type of protrusion 12 protruding toward the opposite jaw direction on the occlusal surface of the posterior teeth area, and the protrusion height of the second type of protrusion 12 is compensated. The first type of protruding portion 11 and the limiting portion 21 interact with the jaw opening space formed by the posterior teeth to stabilize the occlusion state. In some embodiments, the second type of protrusion 12 covers a tooth located on the shell-shaped body (ie, the first shell-shaped body 10) in the jaw opening space, and its maximum height may be less than or equal to 4 mm. Although the height is limited to less than or equal to 4mm in this embodiment, such as 2mm, 1.5mm, etc., in some embodiments it can also be designed to other heights, such as 6mm, etc., which can be designed according to the actual needs of the doctor, and is not limited here.

In one embodiment, the tooth position provided by the first type of protruding portion 11 and the tooth position provided by the second type of protruding portion 12 may be different. In some embodiments, when the first type of protrusions 11 and the second type of protrusions 12 are both disposed on the same shell-like body (such as the first shell-like body 10), the second type of protrusions 12 are provided The tooth position is adjacent to the tooth position where the first type of protruding portion 11 is provided. As shown in FIG. 3 , the first type of protruding part 11 is arranged at the No. 5 tooth position, and the second type of protruding part 12 is arranged at the No. 4 tooth position. In some embodiments, the first type of protruding part 11 may also be provided at the No. 4 tooth position, and the second type of protruding part 12 may be provided at the No. 5 tooth position. The tooth positions of various protrusions can be determined according to actual needs and the height and position of the jaw opening space.

In one embodiment, the tooth position provided by the first type of protruding portion 11 and the tooth position provided by the second type of protruding portion 12 may be the same. For example, the first type of protruding portion 11 and the second type of protruding portion 12 are both arranged at the No. 4 tooth position. In practical applications, they can also be both arranged at the No. 5 tooth position, and will not be listed one by one here.

It is worth mentioning that in some embodiments, the second type of protruding portion 12 is provided corresponding to the occlusal surface of the corresponding teeth of the opposite jaw. In one embodiment, there is no deviation between the upper and lower jaws. Then when the dental instruments in the embodiment of the present application are worn and bite each other, the dental arch positions of the upper and lower posterior teeth basically correspond, as shown in Figure 1, the second category The protruding portion 12 can protrude from the middle of the set tooth position and be distributed on the occlusal surface approximately symmetrically along the dental arch line. In another embodiment, there is a deviation between the upper and lower jaws. When they bite each other, the dental arch positions of the upper and lower posterior teeth are deviated and do not correspond. As shown in Figure 6, the protrusion of the second type of protrusion 121 The position can be on the buccal side, or as shown in Figure 7 , the protruding position of the second type of protrusion 122 can be on the lingual side, which is specifically determined according to the direction of the jaw deviation. If the upper jaw is deflected to the right relative to the lower jaw, the second type of protrusion 122 on the left buccal side is deflected toward the lingual side, and the second type of protrusion 121 on the right buccal side is deflected toward the buccal side.

In some embodiments, the second type of protrusions 12 are provided with reinforcing structures to enhance the strength of the second type of protrusions 12 . As shown in FIG. 3 , the reinforcing structure in this embodiment is a reinforcing rib 131 provided on the buccal side and/or the lingual side of the second type of protrusion 124 . That is to say, the reinforcing ribs 131 on the second type of protrusion 124 can be provided on both the lingual and buccal sides, only on the lingual side, or only on the buccal side (not shown in the figure). The reinforcing ribs may be in concave and convex shapes and are arranged along the long axis of the teeth, which can increase the resistance to deformation in the long axis direction and reduce the risk of the second type of protrusions 124 being bitten.

It should be further explained that in some embodiments, when the first shell-like body 10 and the second shell-like body 20 interact, the occlusal surface of the second type of protrusion 12 matches the occlusal surface of the corresponding teeth of the opposing jaw. . Limiting the concave and convex matching of the occlusal surface further increases the contact area during occlusion, similar to setting the occlusal surface of the second type convex portion 12 to an anatomical type, increasing the contact area between the upper and lower jaws during occlusion, effectively improving the stability of the occlusion state.

In some embodiments, the second type of protruding portion 12 and the shell-shaped body where it is located are an integral structure. In practical applications, this integrated structure can be obtained through hot stamping molding technology. The specific hot stamping molding process generally includes: 3D printing based on the corresponding digital dental model and a series of intermediate digital dental models to produce a physical dental jaw. model, and then use a diaphragm to heat-press and form on the above-mentioned solid dental model to obtain a shell-shaped dental instrument containing the tooth shape, and then cut along the gum line or adjacent to the gum line on the shell-shaped dental instrument containing the tooth shape, Thus, a shell-shaped dental appliance capable of accommodating teeth is obtained.

It can be seen that, using the above technical solution, the first type of protrusion 11 is provided on the buccal or lingual side of the posterior tooth area of the first shell-shaped body 10 corresponding to the upper jaw, and the first type of protrusion 11 is provided on the posterior teeth of the second shell-shaped body 20 corresponding to the lower jaw. A limiting portion 21 used in conjunction with the above-mentioned first type of protruding portion 11 is provided on the buccal or lingual side of the area. Through the interaction of the first type of protruding portion 11 and the limiting portion 21, the relative position of the upper and lower jaws can be adjusted. Positional relationship to gradually trend the jaw position to achieve the correct occlusal relationship. In some embodiments, a second type of protrusion 12 is provided on the occlusal surface of the posterior region of the shell-like body to compensate for the posterior region when adjusting the inter-jaw relationship. The resulting jaw opening space increases the contact area of the posterior teeth when biting through the contact between the second type protrusion 12 and the opposing jaw, thereby increasing the bite stability and improving the wearer's chewing experience. At the same time, the position and structure of the first type of protruding part 11 and the limiting part 21 are clarified, so that the first type of protruding part 11 and the limiting part 21 interact to adjust the relative positional relationship between the upper and lower jaws in the sagittal direction. In some embodiments, the position of the second type of protrusion 12 is defined to correspond to the occlusal surface of the corresponding teeth of the opposite jaw, so that the supporting force is better and the bite is more stable. Furthermore, in some embodiments, various types of protrusions are limited to be provided at different tooth positions, which can avoid too many attachments on the same tooth position and facilitate keeping the appliance diaphragm roughly uniform. In some embodiments, they are arranged on adjacent teeth so that the adjustment of the inter-jaw relationship is close to the effective position of stabilizing the bite, which is more conducive to stabilizing the bite.

It is worth mentioning that although in the above embodiment, the mesial surface of the first type of protrusion 11 interacts with the distal surface of the limiting part 21 to adjust the relative position of the upper and lower jaws in the sagittal direction, in actual applications The relative positional relationship between the upper and lower jaws can also be adjusted in the sagittal direction through the interaction between the distal surface 211 of the first type protruding portion 11 and the mesial surface 112 of the limiting portion 21 . That is to say, in some embodiments, the first type of protruding portion 11 is on the distal side of the limiting portion 21 , but in actual applications, the limiting portion 21 can also be arranged on the distal side of the first type of protruding portion 11 as needed. . It can be seen that the direction in which corrective force needs to be applied can be determined according to different malocclusion relationships, thereby designing different positional relationships between the first type of protruding portion 11 and the limiting portion 21 .

It should also be mentioned that in some embodiments, the first type of protruding part 11 and the limiting part 21 are arranged on the buccal side of the posterior tooth area. In actual applications, the first type of protruding part 11 and the limiting part 21 are also It can be placed on the lingual side of the posterior tooth area, as shown in Figures 11 and 12. The principles of their interaction are similar and will not be described again here.

In some embodiments, the second type of protrusions 12 are disposed on the first shell-like body 10 . In practical applications, the second type of protrusions 12 can also be disposed on the second shell-like body 10 , and their structures are similar. , which will not be described in detail here. In some embodiments, it is disposed on the first shell-shaped body 10, which is more conducive to stabilizing the force and further stabilizing the bite state.

An embodiment of the present application also provides a dental instrument. The difference between this embodiment and the previous embodiment is that in the previous embodiment, the second type of protruding portion 12 covers one tooth, while in this embodiment, the second type of protruding portion 12 covers two teeth. Covering multiple teeth can further increase the contact surface during bite, effectively improving the stability of the bite.

In some embodiments, as shown in FIG. 8 , the second type of protrusion 125 specifically covers the first premolar 13 and the second premolar 14 in the posterior region. In some embodiments, if there are open jaws on both sides of the jaw, second-type protrusions 12 are provided on both sides of the dental instrument. The maximum height of the second-type protrusions 12 on both sides in the vertical direction is determined by the opening. Jaw settings can vary.

In some embodiments, if the jaw opening space includes the corresponding space of the second molar, the second type of protrusion 12 covers at least one tooth on the shell-shaped body located in the jaw opening space except the second molar. That is to say, even if there is an open jaw in the space corresponding to the second molar, the second type of protrusion 12 will not cover the second molar when it is designed.

It needs to be further explained that in some embodiments, the first type of protrusions 11 can be disposed on the mesiobuccal side of the bilateral first molars. Other structural limitations are similar to those described in the previous embodiments and will not be described again here. .

It is worth mentioning that, as shown in Figure 9, the second type of protrusion 123 in some embodiments can cover more teeth, such as specifically covering the first premolar 13, the second premolar 14, First molars15. There are other forms of coverage, which are not listed here. In some embodiments, the second type of protrusion 126 may be provided with buccal and lingual reinforcing rib structures 132. The specific structure is shown in Figure 10 and will not be described again here.

It can be seen that in some embodiments, the second type of protrusions 12 are defined to cover multiple teeth, thereby further increasing the occlusal area of the posterior teeth, thereby stabilizing the occlusion state. In some embodiments, the second type of protruding portion 12 is limited to not cover the second molar. Since the second molar is the last tooth, not providing the second type of protruding portion 12 can not only avoid affecting the opening of the teeth, but also avoid The shell-like body falls off during wearing.

It should be noted that in the above embodiments, the “second type protruding parts 121”, “second type protruding parts 122”, “second type protruding parts 123”, “second type protruding parts 124”, “Second type protruding part 125” and “second type protruding part 126” are respectively different expressions of “second type protruding part 12” in corresponding embodiments.

An embodiment of the present application also provides a dental instrument. The difference between this embodiment and the previous embodiment is that in the previous embodiment, the reinforcing ribs 111 are used as the reinforcing structure of the second type of protrusions 12, while in this embodiment, the filling body built into the second type of protrusions 12 is used as the reinforcing structure. Strengthen the structure.

In some embodiments, the second type of protruding portion 12 is a hollow structure, and the reinforcing structure can be a filling body built into the second type of protruding portion 12 . In some embodiments, the shape of the filling body is consistent with the inner diameter of the second type of protrusion 12 . The strength of the second type of protrusions 12 is increased by building a filler into the hollow structure, which is a simple and effective method.

In some embodiments, the material of the filling body is resin. In practical applications, the filling body and the dental instrument can be delivered to the user separately, and the user can be instructed to put the filling body into the shell before wearing the dental instrument. The hollow part of the body can be worn again, which is convenient and practical.

It can be seen that the dental instrument in the above embodiment provides another way to implement the reinforcing structure, which enriches the way to implement the reinforcing structure on the protrusion in practical applications, so as to be suitable for different application scenarios.

It is worth mentioning that in addition to the reinforcing ribs and built-in fillers in the aforementioned embodiments to increase the strength of the second type of protrusions 12, materials with a larger elastic modulus can also be used to make the second type of protrusions 12. Materials with different elastic modulus are selected to enhance the strength of the bulge. Similarly, a similar design can also be adopted for the first type of protruding portion 11, which will not be described one by one here.

It should also be noted that the various forms of reinforcement structures mentioned in the above embodiments can be used alone or in combination to adapt to different application scenarios and design requirements, which will not be described again here.

An embodiment of the present application also provides a dental instrument. The difference between this embodiment and the previous embodiment is that the dental instrument in the previous embodiment is obtained by hot pressing film molding technology, while the dental instrument in this embodiment is obtained by 3D printing.

In some embodiments, the specific manufacturing process is to use a 3D printing method to print and manufacture the designed digital model of the shell-shaped dental appliance. This method only needs to design the required structure on the model when designing the digital dental instrument model, and then print it together in the printing stage. It does not require redundant processes and can be obtained in one go. The resulting dental instrument is also very strong. In some embodiments, the additive manufacturing method may be SLA (light curing) printing or DLP (digital light processing) printing, or other 3D printing technologies may be used, which will not be listed here.

In some embodiments, the second type of protrusions 12 are solid structures. The solid structure is conducive to reducing the deformation of dental instruments during the bite process and can increase the firmness of dental instruments.

It can be seen that dental instruments obtained through 3D printing have simple procedures, good firmness, and are suitable for various application scenarios.

It is worth mentioning that in addition to integrated dental instruments, split dental instruments can also be used, that is, the second type of protruding portion 12 is made as an independent component and is connected to the shell-shaped body by pasting, welding or riveting. .

An embodiment of the present application also provides a dental orthodontic system, which includes multiple sets of dental instruments. The multiple sets of dental instruments include at least one set of any one of the dental instruments in the above-mentioned embodiments.

In some embodiments the sets of dental instruments have geometries that gradually reposition the teeth from an initial position to a target orthodontic position. In some embodiments, the protrusion height of the second type of protrusions 12 provided on different sets of dental instruments for adjusting the position of the upper and lower jaws in the direction of the opposing jaw gradually decreases along with the orthodontic process. In some embodiments, taking the correction of teeth through three correction stages as an example, different dental instruments are used to correct teeth in each stage. For example, the dental instruments used in the second correction stage are those used after the first correction stage. Dental instruments, such as the dental instruments used in the third stage of correction are the dental instruments used after the second stage of correction. The difference between the dental instruments used in the three stages is: the dental instruments used in the second stage of correction are set on The protruding height of the second type protruding portion 12 toward the opposing jaw direction is smaller than the protruding height of the second type protruding portion 12 toward the opposing jaw direction provided on the dental instrument used in the first correction stage. The protruding height used in the third correcting stage is The protruding height of the second type of protruding portion 12 provided on the dental instrument in the anti-jaw direction is smaller than the protruding height of the second type of protruding portion 12 provided on the dental instrument used in the second correction stage in the anti-jaw direction. It is worth mentioning that when performing dental correction, the patient needs to wear a series of shell-shaped dental instruments for correction. The geometric shape rules of the series of shell-shaped dental instruments can be referred to the above example. A pair of shell-shaped dental instruments is 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.

It is worth mentioning that in some embodiments, the positioning mark in the semi-hollow mode can be provided on the information layer in a hollow form as in some embodiments, and the covering layer will still cover the hollow part of the positioning mark. In another embodiment, the positioning mark in a semi-hollow mode may also be formed by recessing from the bottom surface of the bearing part 20 in some embodiments, which will not be described again here.

The embodiments of the present application are described in detail above with reference to the accompanying drawings, but the present application is not limited to the above embodiments. Even if various changes are made to this application, if these changes fall within the scope of the claims of this application and its equivalent technology, they will still fall within the protection scope of this application.

Claims

A dental instrument, including: a first shell-like body for accommodating maxillary teeth and a second shell-like body for accommodating mandibular teeth,

The first type of protrusions are provided on the buccal side or lingual side of the posterior teeth area of the first shell-like body, and the buccal side or lingual side of the posterior teeth area of the second shell-like body are provided with the first type of protrusions. The first type of protruding part is used in conjunction with the limiting part. The first type of protruding part interacts with the limiting part to adjust the relative positional relationship between the upper and lower jaws; the first shell-like body or the The second shell-like body is provided with a second type of protruding portion protruding toward the opposite jaw direction on the occlusal surface of the posterior teeth. The protruding height of the second type of protruding portion compensates for the height of the first type of protruding portion and the second type of protruding portion. The limiting portion interacts with the jaw opening space formed by the posterior tooth area to stabilize the occlusion state.
The dental instrument according to claim 1, wherein the first type of protrusion extends toward the second shell-like body along the gingival and jaw direction and at least partially covers the buccal surface of the second shell-like body, and the limiter The position portion extends toward the first shell-like body along the gingival and jaw direction, at least partially covering the buccal side of the first shell-like body;

The mesial surface of the first type of protrusion interacts with the distal surface of the limiting part to adjust the relative position of the upper and lower jaws in the sagittal direction, or the distal surface of the first type of protrusion It interacts with the mesial surface of the limiting part to adjust the relative positional relationship between the upper and lower jaws in the sagittal direction.
A dental instrument according to claim 1 or 2, wherein the second type of protrusion covers at least one tooth on the shell-like body located in the jaw opening space.
The dental instrument according to any one of claims 1 to 3, wherein the jaw opening space includes a corresponding space for the second molar, and the second type of protrusion covers the shell-like body located in the jaw opening space. At least one tooth other than said second molar.
The dental instrument according to any one of claims 1 to 4, wherein the highest height of the second type of protrusions is less than or equal to 4 mm.
The dental instrument according to any one of claims 1 to 5, wherein the tooth positions provided by the second type of protrusions are different from the tooth positions provided by the first type of protrusions.
The dental instrument according to any one of claims 1 to 6, wherein the first type of protrusions and the second type of protrusions are provided on the first shell-like body, and the second type of protrusions are The tooth position provided by the protrusion-like part is adjacent to the tooth position provided by the first type protrusion part.
The dental instrument according to any one of claims 1 to 7, wherein the second type of protruding portion is arranged corresponding to the occlusal surface of the corresponding teeth of the opposite jaw.
The dental instrument according to any one of claims 1 to 8, wherein when the first shell-shaped body interacts with the second shell-shaped body, the occlusal surface of the second type of protrusion and the The concave and convex occlusal surfaces of the corresponding teeth in the opposing jaws match.
The dental instrument according to any one of claims 1 to 9, wherein the second type of protrusions are provided with a reinforcing structure to enhance the strength of the second type of protrusions.
The dental instrument of claim 10, wherein the reinforcing structure is a buccal side of the second type of protrusion. Reinforcing ribs provided on the face and/or tongue side.
The dental instrument according to claim 10, wherein the second type of protruding portion is a hollow structure, and the reinforcing structure is a filling body built into the second type of protruding portion.
The dental instrument according to any one of claims 1 to 12, wherein the elastic modulus of the material of the first type of protrusions and/or the second type of protrusions is greater than that of the first shell-shaped body. The elastic modulus of the material.
The dental instrument according to any one of claims 1 to 13, wherein the second type of protruding portion and the shell-shaped body where it is located are an integral structure.
The dental instrument according to claim 14, wherein the one-piece structure is obtained by 3D printing, and the second type of protruding portion is a solid structure.
The dental instrument according to any one of claims 1 to 15, characterized in that the second type of protruding portion is connected to the shell-shaped body by pasting, welding or riveting.
A dental orthodontic system includes multiple sets of dental instruments, and the multiple sets of dental instruments include at least one set of dental instruments according to any one of claims 1 to 16.
17. The orthodontic system of claim 17, wherein the plurality of sets of dental instruments have a geometry that gradually repositions teeth from an initial position to a target orthodontic position.
The dental orthodontic system according to claim 17 or 18, wherein the heights of the second type of protrusions in at least two sets of dental instruments among the plurality of sets of dental instruments along the long axis of the teeth are inconsistent.