Tooth preparation auxiliary structure and tooth preparation system

Abstract

The utility model provides a tooth preparation auxiliary structure and a tooth preparation system.The tooth preparation auxiliary structure is arranged on a tooth, the tooth comprises a target tooth body and a positioning tooth body, the tooth preparation auxiliary structure is used for assisting a lathe needle in tooth preparation of the target tooth body, the tooth preparation auxiliary structure comprises a base, the base is used for being arranged on the periphery of the tooth in a sleeving mode, and the base is provided with a containing cavity; the base is provided with an operation window corresponding to a target tooth body and a positioning window corresponding to a positioning tooth body. And the guide positioning structure is arranged at the operation window. According to the technical scheme, the problem that in the related technology, the difficulty of tooth veneering repairing by a doctor is large can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, and particularly relates to a tooth preparation auxiliary structure and a tooth preparation system. Background Technique

[0002] At present, tooth veneer restoration is a kind of tooth whitening and restoration technology. Tooth veneer restoration is to paste a layer of material similar to the normal tooth color on the surface of the discolored or defective tooth to achieve the effect of whitening or restoration, and porcelain veneer is a better choice among them. In the early stage of tooth veneer restoration, the doctor will first perform tooth preparation. Among them, tooth preparation is to grind out a space on the tooth surface for veneer installation, so that a restoration can be pasted in this space later, and its outer contour is the same as that of the tooth before grinding. Tooth preparation is a very important step in tooth veneer restoration, which will directly affect aspects such as the retention, restoration shape and service life of the veneer.

[0003] During the process of tooth preparation, the doctor needs to determine the part that needs to be ground off on the surface of each tooth for subsequent veneer operations. In this field, at present, most doctors rely on personal experience to visually determine the part that needs to be ground off, thus increasing the difficulty of the doctor in performing tooth veneer restoration. In addition, since the doctor's estimation is often difficult to avoid more or less errors, the restored teeth are also difficult to reach the ideal state. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a tooth preparation auxiliary structure and a tooth preparation system to solve the problem of the large difficulty for doctors in performing tooth veneer restoration in the related technology.

[0005] To achieve the above purpose, according to one aspect of the utility model, a tooth preparation auxiliary structure is provided for being arranged on a tooth. The tooth includes a target tooth body and a positioning tooth body. The tooth preparation auxiliary structure includes: a base for sleeving on the outer periphery of the tooth. The base has a receiving cavity, and an operation opening corresponding to the target tooth body and a positioning opening corresponding to the positioning tooth body are arranged on the base; a guiding and positioning structure arranged at the operation opening. The positioning opening of the tooth preparation auxiliary structure according to the utility model is beneficial to observing whether the tooth preparation auxiliary structure is installed in place.

[0006] Applying the technical solution of the present utility model, the base is sleeved on the outer periphery of the tooth. The base can provide an installation foundation for other components of the tooth preparation auxiliary structure. The base has a receiving cavity for receiving the tooth. The inner side wall of the receiving cavity is adapted to the outer surface of the tooth so that the base can be stably connected to the tooth, avoiding shaking between the base and the tooth during the tooth preparation operation by the doctor, which has an adverse effect on the tooth preparation operation. An operation window and a positioning window are provided on the base. The positioning window is used to expose the positioning tooth body. Before the doctor performs the tooth preparation operation, the base needs to be set on the tooth first. After the base is installed, the doctor observes the matching degree of the positioning tooth body and the base through the positioning window to judge whether the base is installed in place. The properly installed base is beneficial for the doctor to perform subsequent tooth preparation operations. The operation window is a concave window structure and is used to expose all the target tooth bodies so that the target tooth bodies can be ground by a dental bur. The guiding and positioning structure is arranged at the operation window and can guide and position the dental bur. The doctor uses the dental bur to grind the target tooth bodies. During the tooth preparation process, the guiding and positioning structure guides and positions the dental bur, enabling the doctor to perform precise grinding operations on the target tooth bodies, making the ground target tooth bodies present an ideal shape. Moreover, the guiding and positioning structure can also greatly simplify the doctor's tooth preparation operation, eliminating a large number of steps for the doctor to visually estimate the target tooth bodies. The tooth preparation auxiliary structure makes the doctor's tooth preparation operation simple and improves the doctor's tooth preparation efficiency. Therefore, the technical solution of the present application can effectively solve the problem of the great difficulty in tooth veneer restoration by doctors in related technologies.

[0007] Further, the operation window has a labial bottom wall and a lingual bottom wall. The guiding and positioning structure includes a first plate body that extends in the vertical direction. The first end of the first plate body is connected to the labial bottom wall or the lingual bottom wall, and the second end of the first plate body is lower than the upper surface of the base or lower than the top of the target tooth body.

[0008] Further, both side walls of the first plate body in the transverse direction are spaced from the side walls of the operation window.

[0009] Further, the distance between the second end of the first plate body and the top of the target tooth body in the vertical direction is between 1.5 mm and 2 mm; and / or, the distance between the side wall of the first plate body and the side surface of the target tooth body is between 0.8 mm and 1.2 mm.

[0010] Further, the operation window has a labial bottom wall and a lingual bottom wall. The guiding and positioning structure includes a second plate body that extends in the transverse direction. The first end of the second plate body is connected to the labial bottom wall or the lingual bottom wall, and the second end of the second plate body extends in a direction away from the base. The upper surface of the second plate body is spaced from the gingiva at the target tooth body.

[0011] Further, the distance between the upper surface of the second plate body and the gum at the target tooth body is between 0.8 mm and 1.2 mm; and / or, the side wall of the operation window is spaced from the side surface of the target tooth body.

[0012] Further, the guiding and positioning structure includes a third plate body disposed on the labial side or the lingual side of the operation window and connected to the side wall of the operation window. A through groove is formed in the third plate body, and the through groove penetrates the third plate body along the direction from the lingual side to the labial side of the operation window.

[0013] Further, a partition is disposed in the through groove to divide the through groove into a plurality of guiding grooves; or, a partition is disposed in the through groove to divide the through groove into a plurality of guiding grooves, and the plurality of guiding grooves are spaced along the transverse direction, and the guiding grooves and the partition both extend in the vertical direction.

[0014] Further, the third plate body includes a main body portion and a connecting portion. The connecting portion is connected between the main body portion and the base, and the through groove is formed in the main body portion.

[0015] According to another aspect of the present utility model, a tooth preparation system is provided, which is arranged on a tooth. The tooth includes a target tooth body. The tooth preparation system is used to assist a dental bur in preparing the target tooth body. The tooth preparation system includes: a first tooth preparation auxiliary structure, including a first base and a first plate body. The first base is used to be sleeved on the outer periphery of the tooth. The first base has a first accommodation cavity. The inner side wall of the first accommodation cavity is adapted to the outer surface of the tooth. A first operation opening window is arranged on the first base. The first operation opening window is a first concave-down opening window structure and is used to expose the entire target tooth body. The first operation opening window has a first labial bottom wall and a first lingual bottom wall. The first plate body extends in the vertical direction. The first end of the first plate body is connected to the first labial bottom wall or the first lingual bottom wall. The second end of the first plate body is lower than the upper surface of the first base; a second tooth preparation auxiliary structure, including a second base and a second plate body. The second base is used to be sleeved on the outer periphery of the tooth. The second base has a second accommodation cavity. The inner side wall of the second accommodation cavity is adapted to the outer surface of the tooth. A second operation opening window is arranged on the second base. The second operation opening window is a second concave-down opening window structure and is used to expose the entire target tooth body. The second operation opening window has a second labial bottom wall and a second lingual bottom wall. The second plate body extends in the transverse direction. The first end of the second plate body is connected to the second labial bottom wall or the second lingual bottom wall. The second end of the second plate body extends in a direction away from the second base. The upper surface of the second plate body is spaced from the gingiva at the target tooth body; a third tooth preparation auxiliary structure, including a third base and a third plate body. The third base is used to be sleeved on the outer periphery of the tooth. The third base has a third accommodation cavity. The inner side wall of the third accommodation cavity is adapted to the outer surface of the tooth. A third operation opening window is arranged on the third base. The third operation opening window is a third concave-down opening window structure and is used to expose the entire target tooth body. The third plate body is arranged on the labial side or the lingual side of the third operation opening window and is connected to the side wall of the third operation opening window. A third through groove is arranged on the third plate body. The third through groove penetrates the third plate body along the direction from the lingual side to the labial side of the third operation opening window. The dental bur includes a mounting portion and a needle tip. The surface of the third plate body away from the target tooth body is used to support the mounting portion. The needle tip can extend into the third through groove.

[0016] Applying the technical solution of the present utility model, the base is sleeved on the outer periphery of the tooth. The base can provide an installation foundation for other components of the tooth preparation auxiliary structure. The base has a receiving cavity for receiving the tooth. The inner side wall of the receiving cavity is adapted to the outer surface of the tooth, so that the base can be stably connected to the tooth, avoiding the shaking between the base and the tooth during the tooth preparation operation by the doctor, which has an adverse impact on the tooth preparation operation. An operation window and a positioning window are provided on the base. The positioning window is used to expose the positioning tooth body. Before the doctor performs the tooth preparation operation, the base needs to be set on the tooth first. After the base is installed, the doctor observes the matching degree of the positioning tooth body and the base through the positioning window to judge whether the base is installed in place. The installed base is beneficial for the doctor to perform subsequent tooth preparation operations. The operation window is a concave window structure and is used to expose all the target tooth bodies, so that the target tooth bodies can be ground by a dental burr. The guiding and positioning structure is arranged at the operation window and can guide and position the dental burr. The doctor uses the dental burr to grind the target tooth bodies. During the tooth preparation process, the guiding and positioning structure guides and positions the dental burr, so that the doctor can perform precise grinding operations on the target tooth bodies, making the ground target tooth bodies present an ideal shape. And the guiding and positioning structure can also greatly simplify the doctor's tooth preparation operation, saving a large number of steps for the doctor to visually observe and estimate the target tooth bodies. The tooth preparation auxiliary structure makes the doctor's tooth preparation operation simple and improves the doctor's tooth preparation efficiency. Therefore, the technical solution of the present application can effectively solve the problem of the great difficulty in dental veneer restoration in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute a limitation to the protection scope of the present utility model. In the drawings:

[0018] Figure 1 FIG. shows a three-dimensional structural schematic diagram of a first embodiment of a tooth preparation auxiliary structure according to the present utility model;

[0019] Figure 2 FIG. shows Figure 1 a three-dimensional structural schematic diagram of another angle of the tooth preparation auxiliary structure;

[0020] Figure 3 FIG. shows Figure 1 a three-dimensional structural schematic diagram of the tooth preparation auxiliary structure installed on a tooth;

[0021] Figure 4 FIG. shows a three-dimensional structural schematic diagram of a second embodiment of a tooth preparation auxiliary structure according to the present utility model;

[0022] Figure 5 FIG. shows Figure 4Schematic three-dimensional structure diagram of the tooth preparation auxiliary structure mounted on a tooth;

[0023] Figure 6 Shows a schematic three-dimensional structure diagram of a third embodiment of the tooth preparation auxiliary structure according to the present invention;

[0024] Figure 7 Shows Figure 5 Schematic three-dimensional structure diagram of the tooth preparation auxiliary structure mounted on a tooth.

[0025] Wherein, the above-mentioned drawings include the following reference numerals:

[0026] 1, tooth; 2, target tooth body; 3, positioning tooth body;

[0027] 10, base; 11, operation opening window; 111, labial bottom wall; 12, positioning opening window;

[0028] 20, guiding and positioning structure; 21, first plate body; 22, second plate body; 23, third plate body; 231, through groove; 232, partition; 233, guiding groove; 234, main body part; 235, connecting part. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary implementation manners according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or their combinations.

[0031] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0032] As Figures 1 to 7 shown, the present application provides a tooth preparation assisting structure disposed on a tooth (or tooth model) 1. The tooth 1 includes a target tooth body 2 and a positioning tooth body 3. The tooth preparation assisting structure is used to assist a dental burr in preparing the target tooth body 2. The first embodiment of the tooth preparation assisting structure of the present application includes: a base 10 and a guiding and positioning structure 20. The base 10 is used to be sleeved on the outer periphery of the tooth 1. The base 10 has a receiving cavity, and the inner side wall of the receiving cavity is adapted to the outer surface of the tooth 1. An operation opening 11 and a positioning opening 12 are provided on the base 10. The operation opening 11 (for example, a concave opening structure) is used to expose the circumferential edge of the target tooth body 2, and the positioning opening 12 is used to expose the positioning tooth body 3. The guiding and positioning structure 20 is disposed at the operation opening 11 and can guide and position the dental burr.

[0033] Applying the technical solution of this embodiment, the base 10 is sleeved on the outer periphery of the tooth 1. The base 10 can provide an installation foundation for other components of the tooth preparation auxiliary structure. The base 10 has a receiving cavity for receiving the tooth. The inner side wall of the receiving cavity is adapted to the outer surface of the tooth 1 so that the base 10 can be stable with the tooth during use, avoiding shaking between the base 10 and the tooth 1 during the tooth preparation operation by the doctor, which has an adverse impact on the tooth preparation operation. An operation window 11 and a positioning window 12 are provided on the base 10. The positioning window 12 is used to expose the positioning tooth body 3. Before the doctor performs the tooth preparation operation, the base 10 needs to be set on the tooth 1 first. After the base 10 is installed, the doctor observes the matching degree of the positioning tooth body 3 and the base 10 through the positioning window 12 to judge whether the base 10 is installed in place. The installed base 10 is beneficial for the doctor to perform subsequent tooth preparation operations. The operation window 11 can be a concave window structure and is used to expose the entire target tooth body 2 so that the target tooth body 2 can be ground or cut by a bur. The guiding and positioning structure 20 is arranged at the operation window 11 and can guide and position the bur. The doctor uses the bur to grind the target tooth body 2. During the tooth preparation process, the guiding and positioning structure 20 guides and positions the bur, so that the doctor can perform precise grinding operations on the target tooth body 2, making the ground target tooth body 2 present an ideal shape. And the guiding and positioning structure 20 can also greatly simplify the doctor's tooth preparation operation, eliminating a large number of steps for the doctor to visually estimate the target tooth body 2. The tooth preparation auxiliary structure makes the doctor's tooth preparation operation simple and improves the doctor's tooth preparation efficiency. Therefore, the technical solution of this embodiment can effectively solve the problem of the great difficulty for doctors in tooth veneer restoration in the related art.

[0034] It should be noted that the tooth preparation auxiliary structure of this embodiment can be used for both the auxiliary tooth preparation of upper teeth and the auxiliary tooth preparation of lower teeth. The principles of the auxiliary tooth preparation in the two cases are similar. The description focuses on the auxiliary tooth preparation of lower teeth. In this article, words such as "upper" and "top" used for orientation description refer to the direction away from the gum, and words such as "lower" and "bottom" used for orientation description refer to the direction close to the gum.

[0035] In addition, it should be noted that "the inner side wall of the accommodating cavity is adapted to the outer surface of the tooth 1" means that when the base 10 is installed on the tooth 1, the inner side wall of the accommodating cavity and the outer surface of the tooth 1 are in a fitting arrangement; the base 10 includes a labial plate body and a lingual plate body, and the upper ends of the labial plate body and the lingual plate body are connected so that the base 10 forms an accommodating cavity with an opening facing downward. "The operation window 11 is a concave-down window structure" means that the labial plate body is provided with a first groove communicating with its upper end and extending downward at the target tooth body 2, and the lingual plate body is provided with a second groove communicating with its upper end and extending downward at the target tooth body 2. Both the first groove and the second groove communicate with the accommodating cavity, and the first groove and the second groove together form the operation window 11. Therefore, the operation window 11 is a concave-down window structure.

[0036] In Figures 1 to 3 In the illustrated embodiment, the operation window 11 has a labial bottom wall 111 and a lingual bottom wall. The guiding and positioning structure 20 includes a first plate body 21. The first plate body 21 extends in the vertical direction. The first end of the first plate body 21 is connected to the labial bottom wall 111 or the lingual bottom wall, and the second end of the first plate body 21 is lower than the upper surface of the base 10. Specifically, taking the lower teeth as an example, since the second end of the first plate body 21 is lower than the upper surface of the base 10 (or lower than the top of the target tooth body 2), when the doctor uses a bur, the tip of the bur can abut and cooperate with the second end of the first plate body 21 in the vertical direction, so that the tip of the bur can grind off a part of the tooth of the target tooth body 2 above the second end of the first plate body 21, which facilitates the tooth preparation operation of the doctor and also makes the polished target tooth body 2 closer to the ideal state. It should be noted that both the "labial bottom wall 111" and the "lingual bottom wall" are the walls of the operation window 11 close to the gum.

[0037] As Figures 1 to 3 As shown, the first plate body 21 is spaced from the side walls of the operation window 11 on both sides in the lateral direction. Specifically, such an arrangement enables the doctor to grind the two sides of the target tooth body 2 in the lateral direction, and the tip of the bur can also abut and cooperate with both sides of the first plate body 21, thereby realizing the positioning and guiding of the first plate body 21 for the tip of the bur, facilitating the tooth preparation operation of the doctor, and also making the polished target tooth body 2 closer to the ideal state.

[0038] The gap between the bottom of the first plate body 21 and the side wall of the operation window 11 is conducive to forming a lateral shoulder for the installation or arrangement of subsequent restorations.

[0039] The first plate body 21 may have a trapezoidal shape. For example, the angle between any side surface of the first plate body 21 and the vertical direction is 5° to 10°, for example, 8°.

[0040] In this embodiment, the spacing distance between the second end of the first plate body 21 and the target tooth body 2 in the vertical direction is, for example, between 1.5 mm and 2 mm. With such a setting, the dimension of the target tooth body 2 ground in the vertical direction is between 1.5 mm and 2 mm, which is beneficial to subsequent repair. The spacing distance between the second end of the first plate body 21 and the target tooth body 2 in the vertical direction can be 1.5 mm, 1.6 mm, 1.68 mm, 1.77 mm, 1.8 mm, 1.93 mm or 2 mm. It should be noted that since the target tooth body 2 itself has an irregular outer contour, the statement "the spacing distance between the second end of the first plate body 21 and the target tooth body 2 in the vertical direction is between 1.5 mm and 2 mm" means that the spacing distance between any point on the upper end of the target tooth body 2 and the corresponding position of the second end of the first plate body 21 in the vertical direction is between 1.5 mm and 2 mm.

[0041] In this embodiment, the spacing distance between the side wall of the first plate body 21 and the side surface of the target tooth body 2 is between 0.8 mm and 1.2 mm. With such a setting, the dimension of one side of the target tooth body 2 ground in the transverse direction is between 0.8 mm and 1.2 mm, which is also beneficial to subsequent repair. The spacing distance between the side wall of the first plate body 21 and the side surface of the target tooth body 2 can be 0.8 mm, 0.9 mm, 0.96 mm, 1 mm, 1.1 mm, 1.12 mm or 1.2 mm. It should be noted that since the target tooth body 2 itself has an irregular outer contour, the statement "the spacing distance between the side wall of the first plate body 21 and the side surface of the target tooth body 2 is between 0.8 mm and 1.2 mm" means that the spacing distance between any point on one side of the target tooth body 2 in the transverse direction and the corresponding position of the side wall of the first plate body 21 in the transverse direction is between 0.8 mm and 1.2 mm. The first embodiment of the tooth preparation auxiliary structure is beneficial to determining the cutting end preparation height and the adjacent preparation width of the target tooth body.

[0042] As Figure 4 and Figure 5 shown, the present application also provides a second embodiment of the tooth preparation auxiliary structure. The difference between the second embodiment and the first embodiment is that: the operation window 11 has a labial bottom wall 111 and a lingual bottom wall, the guiding and positioning structure 20 includes a second plate body 22, the second plate body 22 extends along the transverse direction or a direction inclined to the vertical direction, the first end of the second plate body 22 is connected to the labial bottom wall 111 or the lingual bottom wall, the second end of the second plate body 22 extends in a direction away from the base 10, and the upper surface of the second plate body 22 is spaced from the gingiva at the target tooth body 2. Specifically, there are two second plate bodies 22, and the two second plate bodies 22 are respectively connected to the labial bottom wall 111 and the lingual bottom wall (optimally as Figure 4As shown in the figure, taking the lower teeth as an example, since the upper surface of the second plate body 22 is spaced from the gum at the target tooth body 2, when the doctor uses the bur, the tip of the bur can abut and cooperate with the upper surface of the second plate body 22, so that the teeth from the upper surface of the second plate body 22 to the gum will not be ground off, so that the target tooth body 2 forms front and rear shoulder platforms capable of bearing the restoration veneer at or near the gum, thus facilitating the subsequent operations of the doctor. The heights of the front shoulder platform and the rear shoulder platform can be inconsistent, which depends on specific requirements. For example, the height of the front shoulder platform (labial shoulder platform) is relatively low so that the subsequent worn restoration is not easily noticeable.

[0043] In this embodiment, the spacing distance between the upper surface of the second plate body 22 and the gum at the target tooth body 2 is between 0.8 mm and 1.2 mm. With such a setting, the shoulder platform has a certain height, so as to be able to support the restoration veneer. The spacing distance between the upper surface of the second plate body 22 and the gum at the target tooth body 2 can be 0.8 mm, 0.9 mm, 0.94 mm, 1 mm, 1.1 mm, 1.18 mm or 1.2 mm. It should be noted that since the target tooth body 2 itself has an irregular outer contour, therefore, "the spacing distance between the upper surface of the second plate body 22 and the gum at the target tooth body 2 is between 0.8 mm and 1.2 mm" can be understood as: the spacing distance in the vertical direction between any point of the gum of the target tooth body 2 and the corresponding position on the upper surface of the first plate body 21 is between 0.8 mm and 1.2 mm.

[0044] As Figure 4 and Figure 5 shown, the side wall of the operation window 11 is spaced from the side surface of the target tooth body 2. Specifically, here "the target tooth body 2" refers to the target tooth body 2 that has been ground on the side wall or to be ground on the side wall, that is to say, there may be a certain gap between the target tooth body 2 and its adjacent teeth, and the debris generated by continuously grinding the target tooth body 2 can fall into this part of the gap, and the side wall of the operation window 11 being spaced from the side surface of the target tooth body 2 exposes this part of the gap, so that the doctor can clean the debris.

[0045] As Figure 6 and Figure 7 shown, the present application also provides a third embodiment of the tooth preparation auxiliary structure. The difference between the third embodiment and the first embodiment is that: the guiding and positioning structure 20 includes a third plate body 23 provided on the labial side or the lingual side of the operation window 11 and connected to the side wall of the operation window 11. A through groove 231 is provided on the third plate body 23. The through groove 231 penetrates the third plate body 23 along the direction from the lingual side to the labial side of the operation window 11. The bur includes a mounting portion and a tip. The surface of the third plate body 23 away from the target tooth body 2 is used to support the mounting portion, and the tip can extend into the through groove 231. Specifically, there are two third plate bodies 23, and the two third plate bodies 23 are respectively provided on the labial side and the lingual side of the operation window 11 (optimally asFigure 6 As shown in the figure, the through slot 231 penetrates through the third plate body 23 along the direction from the lingual side to the labial side of the operation opening window 11. The needle can extend into the through slot 231 to grind the target tooth body 2. When the installation part abuts against the surface of the third plate body 23 away from the target tooth body 2, the needle will not continue to move towards the direction of the target tooth body 2, so that a preset thickness can be ground off the target tooth body 2, which not only facilitates the tooth preparation operation of the doctor, but also makes the ground target tooth body 2 closer to the ideal state.

[0046] As Figure 6 and Figure 7 As shown in the figure, a partition 232 is arranged in the through slot 231 to divide the through slot 231 into a plurality of guiding slots 233. The plurality of guiding slots 233 are arranged at intervals in the transverse direction, and both the guiding slots 233 and the partition 232 extend in the vertical direction. Specifically, the plurality of guiding slots 233 enable the doctor not to generate large lateral shaking when grinding the target tooth body 2 with the needle (for example, if the diameter of the needle is 1 mm and the width of the guiding slot 233 is 1.5 mm, the maximum shaking distance of the needle in the guiding slot is 0.5 mm). In other embodiments, a plurality of partitions 232 and corresponding plurality of guiding slots 233 are arranged in the through slot 231.

[0047] The guiding slot 233 is through, and the depth of the guiding slot 233 is beneficial to cooperate with the length of the bur to cut off a tooth body with a predetermined thickness.

[0048] When the needle grinds the tooth in each guiding slot 233, a vertical groove with a preset depth can be formed on the target tooth body 2. After the tooth preparation auxiliary structure is removed, there will be a protrusion between two adjacent grooves. The doctor can grind off this protrusion with a bur. The selection of the preset depth can be based on the material of the restoration. For example, the restoration may be ceramic, zirconia, metal, etc.

[0049] As Figure 6 and Figure 7 As shown in the figure, the third plate body 23 includes a main body part 234 and a connecting part 235. The connecting part 235 is connected between the main body part 234 and the base 10. The through slot 231 is formed on the main body part 234, and the thickness of the main body part 234 is greater than that of the connecting part 235. Specifically, the setting of the connecting part 235 enables the main body part 234 and the base 10 to be connected. The connecting part 235 is set to be thinner, which can relatively reduce the weight of the tooth preparation auxiliary structure.

[0050] In addition, the present application also provides a tooth preparation system disposed on tooth 1, where tooth 1 includes a target tooth body 2. The tooth preparation system is used to assist a bur in preparing the target tooth body 2. Embodiments of the tooth preparation system include: a first tooth preparation auxiliary structure, including a first base and a first plate body 21. The first base is used to be sleeved on the outer periphery of tooth 1. The first base has a first accommodation cavity, and the inner side wall of the first accommodation cavity is adapted to the outer surface of tooth 1. A first operation opening window is provided on the first base. The first operation opening window is a first concave-down opening structure and is used to expose the entire target tooth body 2. The first operation opening window has a first labial bottom wall and a first lingual bottom wall. The first plate body 21 extends in the vertical direction. The first end of the first plate body 21 is connected to the first labial bottom wall or the first lingual bottom wall. The second end of the first plate body 21 is lower than the upper surface of the first base; a second tooth preparation auxiliary structure, including a second base and a second plate body 22. The second base is used to be sleeved on the outer periphery of tooth 1. The second base has a second accommodation cavity, and the inner side wall of the second accommodation cavity is adapted to the outer surface of tooth 1. A second operation opening window is provided on the second base. The second operation opening window is a second concave-down opening structure and is used to expose the entire target tooth body 2. The second operation opening window has a second labial bottom wall and a second lingual bottom wall. The second plate body 22 extends in the horizontal direction. The first end of the second plate body 22 is connected to the second labial bottom wall or the second lingual bottom wall. The second end of the second plate body 22 extends in a direction away from the second base. The upper surface of the second plate body 22 is spaced apart from the gingiva at the target tooth body 2; a third tooth preparation auxiliary structure, including a third base and a third plate body 23. The third base is used to be sleeved on the outer periphery of tooth 1. The third base has a third accommodation cavity, and the inner side wall of the third accommodation cavity is adapted to the outer surface of tooth 1. A third operation opening window is provided on the third base. The third operation opening window is a third concave-down opening structure and is used to expose the entire target tooth body 2. The third plate body 23 is disposed on the labial side or the lingual side of the third operation opening window and is connected to the side wall of the third operation opening window. A third through groove is provided on the third plate body 23. The third through groove penetrates the third plate body 23 along the direction from the lingual side to the labial side of the third operation opening window. The bur includes a mounting portion and a needle tip. The surface of the third plate body 23 away from the target tooth body 2 is used to support the mounting portion, and the needle tip can extend into the third through groove.

[0051] Specifically, the first tooth preparation auxiliary structure, the second tooth preparation auxiliary structure, and the third tooth preparation auxiliary structure are respectively installed on the tooth 1, and the order of their use is not limited. Taking the lower tooth as an example, when the doctor uses the first tooth preparation auxiliary structure, since the second end of the first plate body 21 is lower than the upper surface of the first base, when the doctor uses the dental burr, the tip of the dental burr can be in abutting cooperation with the second end of the first plate body 21 in the vertical direction, so that the tip can grind off a part of the tooth of the target tooth body 2 above the second end of the first plate body 21; when the doctor uses the second tooth preparation auxiliary structure, since the upper surface of the second plate body 22 is spaced from the gum at the target tooth body 2, when the doctor uses the dental burr, the tip can be in abutting cooperation with the upper surface of the second plate body 22, so that the teeth from the upper surface of the second plate body 22 to the gum are not ground off, so that a shoulder platform capable of carrying a restoration veneer is formed at the gum of the target tooth body 2, facilitating the subsequent operation of the doctor; when the doctor uses the third tooth preparation auxiliary structure, the tip can extend into the third through groove to grind the target tooth body 2. When the installation part abuts against the surface of the third plate body 23 away from the target tooth body 2, the tip will not continue to move in the direction of the target tooth body 2, so that the target tooth body 2 can be ground off a preset thickness; the arrangement of the first tooth preparation auxiliary structure, the second tooth preparation auxiliary structure, and the third tooth preparation auxiliary structure not only facilitates the tooth preparation operation of the doctor, but also makes the polished target tooth body 2 closer to the ideal state

[0052] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0053] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations of the spatial relative descriptions used herein will be made accordingly.

[0054] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0055] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A tooth preparation auxiliary structure, used for being arranged on a tooth (1), wherein the tooth (1) comprises a target tooth body (2) and a positioning tooth body (3), characterized in that: The tooth preparation auxiliary structure comprises: A base (10) is used to be sleeved on the outer periphery of the tooth (1), the base (10) having a receiving cavity, and the base (10) is provided with an operating window (11) corresponding to the target tooth body (2) and a positioning window (12) corresponding to the positioning tooth body (3); The guiding and positioning structure (20) is arranged at the operating window (11).

2. The tooth preparation auxiliary structure according to claim 1, characterized in that: The operating window (11) has a labial bottom wall (111) and a lingual bottom wall, and the guiding and positioning structure (20) comprises a first plate body (21), the first plate body (21) extending in a vertical direction, a first end of the first plate body (21) connected to the labial bottom wall (111) or the lingual bottom wall, and a second end of the first plate body (21) lower than an upper surface of the base (10) or lower than a top of a target tooth body (2).

3. The tooth preparation auxiliary structure according to claim 2, characterized in that: Both side walls of the first plate body (21) in the transverse direction are spaced apart from the side walls of the operating window (11).

4. The tooth preparation auxiliary structure according to claim 2 or 3, characterized in that: The distance between the second end of the first plate body (21) and the top of the target tooth body (2) in the vertical direction is between 1.5 mm and 2 mm; and / or, The spacing distance between the side wall of the first plate body (21) and the side surface of the target tooth body (2) is between 0.8 mm and 1.2 mm.

5. The tooth preparation auxiliary structure according to claim 1, characterized in that: The operating window (11) has a labial bottom wall (111) and a lingual bottom wall, and the guiding and positioning structure (20) includes a second plate body (22), the second plate body (22) extends in a transverse direction or in a direction inclined to a vertical direction, a first end of the second plate body (22) is connected to the labial bottom wall (111) or the lingual bottom wall, a second end of the second plate body (22) extends in a direction away from the base (10), and an upper surface of the second plate body (22) is spaced apart from the gums at the target tooth (2).

6. The tooth preparation auxiliary structure according to claim 5, characterized in that: The distance between the upper surface of the second plate (22) and the gums at the target tooth (2) is between 0.8 mm and 1.2 mm; and / or, The side wall of the operating window (11) is spaced apart from the side surface of the target tooth body (2).

7. The tooth preparation auxiliary structure according to claim 1, characterized in that: The guiding and positioning structure (20) comprises a third plate body (23) arranged on the lip side or the tongue side of the operating window (11) and connected to the side wall of the operating window (11), and a through groove (231) is arranged on the third plate body (23), and the through groove (231) passes through the third plate body (23) in the direction from the tongue side to the lip side of the operating window (11).

8. The tooth preparation auxiliary structure according to claim 7, characterized in that: A partition plate (232) is provided in the through groove (231) to separate the through groove (231) into a plurality of guide grooves (233); or, A partition plate (232) is arranged in the through groove (231) to separate the through groove (231) into a plurality of guide grooves (233); the plurality of guide grooves (233) are arranged at intervals along the transverse direction; and the guide grooves (233) and the partition plate (232) both extend along the vertical direction.

9. The tooth preparation auxiliary structure according to claim 7, characterized in that: The third plate body (23) comprises a main body (234) and a connecting portion (235), wherein the connecting portion (235) is connected between the main body (234) and the base (10), and the through groove (231) is formed on the main body (234).

10. A tooth preparation system, for being arranged on a tooth (1), wherein the tooth (1) comprises a target tooth body (2), characterized in that: The tooth preparation system comprises: A first tooth preparation auxiliary structure, comprising a first base and a first plate (21), wherein the first base is used to be sleeved on the outer periphery of the tooth (1), the first base has a first accommodating cavity, the inner side wall of the first accommodating cavity is adapted to the outer surface of the tooth (1), a first operating window is provided on the first base, the first operating window is a first concave window structure and is used to expose the entire target tooth body (2), the first operating window has a first labial bottom wall and a first lingual bottom wall, the first plate (21) extends in a vertical direction, a first end of the first plate (21) is connected to the first labial bottom wall or the first lingual bottom wall, and a second end of the first plate (21) is lower than an upper surface of the first base; A second tooth preparation auxiliary structure, comprising a second base and a second plate (22), wherein the second base is used to be sleeved on the outer periphery of the tooth (1), the second base has a second accommodating cavity, the inner side wall of the second accommodating cavity is adapted to the outer surface of the tooth (1), a second operating window is provided on the second base, the second operating window is a second concave window structure and is used to expose the entire target tooth body (2), the second operating window has a second labial bottom wall and a second lingual bottom wall, the second plate (22) extends in a transverse direction, a first end of the second plate (22) is connected to the second labial bottom wall or the second lingual bottom wall, a second end of the second plate (22) extends in a direction away from the second base, and an upper surface of the second plate (22) is spaced from the gums at the target tooth body (2); A third tooth preparation auxiliary structure comprises a third base and a third plate (23), wherein the third base is used to be sleeved on the outer periphery of the tooth (1), the third base has a third accommodating cavity, the inner side wall of the third accommodating cavity is adapted to the outer surface of the tooth (1), a third operating window is arranged on the third base, the third operating window is a third recessed window structure and is used to expose the entire target tooth body (2), the third plate (23) is arranged on the labial side or the lingual side of the third operating window and is connected to the side wall of the third operating window, a third through groove is arranged on the third plate (23), and the third through groove penetrates the third plate (23) along the direction from the lingual side to the labial side of the third operating window, and the turning needle comprises a mounting portion and a needle head, the surface of the third plate (23) away from the target tooth body (2) is used to support the mounting portion, and the needle head can extend into the third through groove.

Images