Sequentially detachable tooth preparation teaching supplies and use method thereof

Abstract

The present invention provides a tooth preparation teaching device that can be detached in sequence, including several tooth models; the tooth model includes a detachable area and a fixed area below it, the detachable area corresponds to the specific area that needs to be ground during tooth preparation; the fixed area corresponds to the prepared body after tooth preparation; the detachable area includes a guide groove area and a non-guide groove area; the guide groove area and the non-guide groove area each include several independently detachable preparation modules; a first adhesive layer and a second adhesive layer are respectively provided between the guide groove area and the non-guide groove area, and between each preparation module in the non-guide groove area, and the adhesive strength of the second adhesive layer is higher than that of the first adhesive layer. The teaching device also includes a restoration area and several needle models. The present invention also provides a method for using the above-mentioned teaching device. The present invention can improve the quality and teaching effect of tooth preparation teaching, help students master the tooth preparation sequence and operational difficulties, and also has the advantages of repeated demonstration, recycling, and reduced cost of teaching consumables.

Description

Technical Field

[0001] The present invention relates to teaching supplies for dental professionals to perform tooth preparation training in oral prosthodontics experimental practice teaching, belongs to the field of dental education, and particularly relates to a detachable tooth preparation teaching supply and a use method thereof. Background Art

[0002] Tooth preparation is an essential and fundamental skill for dental professionals and is a required course in restorative dentistry experimental practice. In order to cultivate dental professionals' tooth preparation skills, it is crucial to strengthen restorative dentistry experimental practice teaching.

[0003] In traditional oral prosthodontics experimental teaching, teachers often use slides to explain the tooth preparation steps and requirements to students in two dimensions, or use multimedia to perform real operations, allowing students to understand the detailed preparation process through the screen. However, the above explanation methods cannot allow students to intuitively experience the tooth preparation process. In some teaching, model teeth are used for on-site teaching, but the model teeth are often small in size, making it difficult for students to clearly observe the key points of operation and the amount of preparation. Moreover, the prepared body after tooth preparation is completed cannot be observed and perceived by all students at the same time, which to a certain extent affects the students' mastery of knowledge. More importantly, in this type of model, teachers usually use grinding to demonstrate the tooth preparation steps of the model tooth. The overall preparation process is time-consuming and not conducive to the demonstration of the preparation sequence. In addition, after the model tooth is used, the preparation area has been ground off, and it is impossible to repeat the operation and repeat the demonstration of key points and difficult points. It cannot be recycled, which also increases the teaching cost.

[0004] In summary, existing molds used in prosthodontic laboratory teaching are unable to effectively improve classroom teaching efficiency and are not conducive to students' efficient learning of tooth preparation knowledge and skills. This results in students not being able to clearly and intuitively grasp the tooth preparation operation sequence and preparation amount before tooth preparation training, and their understanding of the final preparation effect is not objective, which limits their ability to self-assess the final preparation quality.

[0005] Therefore, it is necessary to develop a dental prosthodontics teaching aid that can help teachers explain the standardized operating procedures of tooth preparation. This not only helps teachers quickly and easily demonstrate the standardized operating procedures, but also shows the final preparation and restoration results. It also has the advantages of repeated demonstration, recycling, and reduced teaching material costs. This is of great significance for students to better understand the steps and amount of tooth preparation and the final preparation and restoration results. By using this teaching aid, teachers can optimize the teaching process and thus improve the operational skills of dental professionals. Summary of the Invention

[0006] One of the purposes of the present invention is to provide a sequentially detachable tooth preparation teaching supply that can not only help teachers demonstrate the standardized operating procedures and final preparation effects of tooth preparation more conveniently and quickly, but also has the function of repeated demonstration, recycling, reducing teaching costs and improving teaching efficiency.

[0007] The second purpose of the present invention is to provide a method for using sequentially detachable dental preparation teaching supplies that can not only help teachers demonstrate the standardized operating procedures and final preparation effects of dental preparation more conveniently and quickly, but also have the characteristics of repeated demonstration, recycling, reducing teaching costs and improving teaching efficiency.

[0008] The technical solution adopted by the present invention to achieve one of the objectives is to provide a sequentially detachable tooth preparation teaching device, comprising: a plurality of tooth models;

[0009] The tooth model includes a detachable area and a fixed area below it;

[0010] The removable area corresponds to a specific area that needs to be removed during tooth preparation; the fixed area corresponds to the prepared body after tooth preparation;

[0011] The removable area includes a guide groove area and a non-guide groove area; the guide groove area and the non-guide groove area each include a plurality of independently removable preparatory modules;

[0012] A first adhesive layer is provided between the guide groove area and the non-guide groove area, and a second adhesive layer is provided between the preparatory modules in the non-guide groove area. The adhesive strength of the second adhesive layer is higher than that of the first adhesive layer.

[0013] The overall concept of the present invention is as follows:

[0014] In order to solve the problem in the prior art that teachers cannot clearly and intuitively teach the tooth preparation sequence, preparation effect and restoration effect in oral prosthodontics experiments, the present invention provides a tooth preparation teaching device that can be detached in sequence, and the specific area in the tooth model that needs to be removed in the tooth preparation is set as a detachable area, which is detachably connected to the fixed area below by magnetic attraction, and the detachable area is further divided into a guide groove area and a non-guide groove area including multiple preparation modules, and the bonding layers between the preparation modules in the non-guide groove area and between the guide groove area and the non-guide groove area are set to have different bonding strengths. In the actual teaching demonstration process, the teacher uses the tooth model provided by the present invention, and can quickly and preferentially remove the guide groove area according to the order of tooth preparation teaching, and then remove the various areas of the non-guide groove area in sequence, thereby efficiently completing the demonstration and teaching of the tooth preparation sequence. The tooth preparation teaching supplies provided by the present invention can not only significantly improve the teaching efficiency of teachers, help teachers demonstrate the standardized operation process and final preparation effect of tooth preparation more conveniently and quickly, but also help oral medical professionals use the teaching supplies themselves before tooth preparation training to accurately grasp the preparation sequence, preparation amount and final preparation effect. It also has the advantages of repeated demonstration, recycling, reduced teaching costs, and improved teaching efficiency.

[0015] Furthermore, the guide groove area includes guide grooves in the occlusal pit and fissure area, guide grooves at the incisal end, guide grooves in the occlusal cusp ridge area and guide grooves in the axial surface.

[0016] Furthermore, the non-guide groove area includes an inter-groove preparation area, an interproximal preparation area, a functional tip bevel area and a finishing area, and the adjacent preparation modules in the non-guide groove area are connected by bonding. In clinical standards, the area outside the guide groove of each preparation surface is usually uniformly regarded as the part to be ground in the second step. However, the present invention, combined with actual teaching experience, found that in the process of tooth preparation teaching, students are often unclear about how to perform standardized grinding on a large range of preparation surfaces, and the different areas ground in sequence will affect the final preparation effect. Therefore, the present invention divides the part that needs to be ground in the second step clinically into an inter-groove preparation area, an interproximal preparation area, a functional tip bevel area and a finishing area through modular design. Among them, the inter-groove preparation area, the interproximal preparation area and the functional tip bevel area are connected to the finishing area by bonding, and the finishing area is connected to the fixed area by magnetic attraction. Such a design facilitates students to fully understand what steps need to be followed to grind other areas after completing the preparation of the guide groove, making the operation more standardized.

[0017] Furthermore, the inter-groove preparation area includes an inter-groove preparation area on the occlusal surface, an inter-groove preparation area on the incisal end, and an inter-groove preparation area on the axial surface.

[0018] Furthermore, the proximal surface preparation area corresponds to the area of ​​the proximal surface that needs to be ground during tooth preparation.

[0019] Furthermore, both the first and second adhesive layers are constructed of reusable adhesive, including double-sided tape. Preferably, grooves are provided at the contact areas of the preparatory modules to accommodate the double-sided tape, thereby ensuring a better fit between the preparatory modules. When the double-sided tape loses its stickiness after repeated use, the old tape can be removed and replaced with a new adhesive layer, enabling the recycling of teaching aids.

[0020] Furthermore, the first and second adhesive layers can differ in one or more of the following: brand, model, material, and sensitivity to peel force, thereby having different bonding strengths. Furthermore, the surface of the preparatory area where the adhesive layer is located can be treated, for example, by making the non-guide groove area have a higher surface roughness than the guide groove area, thereby increasing the bonding strength of the second adhesive layer in the fixed area, making it easier to separate the first adhesive layer from other areas relative to the second adhesive layer, and enabling faster and preferential removal of the guide groove area.

[0021] Furthermore, the lower surface of the finishing area, the upper surface of the fixing area, and the lower surface of the repair area are each provided with magnetic sheets for magnetic attraction. The finishing area and the fixing area, as well as the repair area and the fixing area, can be connected magnetically. The connection strength between the magnetic sheet and the fixing area is greater than the bonding strength of the second adhesive layer.

[0022] Furthermore, the guide groove area and any non-guide groove area may have different colors. The thickness (ie, preparation depth) of the guide groove area and the non-guide groove area may be changed according to the requirements of different tooth preparation experiments.

[0023] Furthermore, the non-guide groove area also includes a functional cusp bevel area, which is provided in the posterior tooth full crown, posterior tooth inlay and posterior occlusal veneer model, and is located between the axial groove preparation area and the axial guide groove area and the finishing area, corresponding to the buccal bevel of the buccal cusp of the mandibular posterior teeth and the palatal bevel of the palatal cusp of the maxillary posterior teeth that need to be ground during tooth preparation. The present application, in combination with actual clinical practice, has found that during tooth preparation, oral medicine professionals often ignore the preparation of the functional cusp bevel when preparing the guide groove and non-guide groove area according to conventional procedures, and fail to properly eliminate sharp line angles. Insufficient preparation of the functional cusp bevel may lead to weakening of the retention shape and resistance shape. At the same time, poor restoration of the occlusal morphology of the restoration or insufficient thickness of the functional cusp area will affect the occlusal function or cause damage to the restoration or even failure of the restoration. Good functional cusp bevel preparation can provide sufficient repair space for the restoration, facilitate the technical production of a good restoration, improve the quality of the restoration, reduce the production time, and promote the long-term stability and long-term success rate of the restoration effect. Therefore, dividing the functional cusp bevel into independent partitions will help students master the tooth preparation methods and operation points of the functional cusp bevel during the learning stage, and pay attention to the preparation site and amount, laying a solid foundation for subsequent clinical work.

[0024] Furthermore, the finishing area is located below the guide groove area, the inter-groove preparation area, the interproximal preparation area and the functional tip bevel area, and is located above the fixed area and surrounds the fixed area, corresponding to the area that needs to be trimmed and polished during tooth preparation. The upper surface of the finishing area is connected to the guide groove area, the inter-groove preparation area, the interproximal preparation area and the functional tip bevel area by bonding, and the lower surface of the finishing area is provided with a magnetic sheet for magnetic connection with the fixed area. According to clinical standards, it is only required to trim and polish the preparation in the final stage of the tooth preparation process, but the specific location and operation details of the trimming and polishing are not informed. In the tooth model provided by the present invention, a finishing area is set up specifically to facilitate students to understand where sharp corners will appear after the initial preparation is completed, and what methods should be used to grind off these sharp corners to make the preparation become round and blunt. It can help students more intuitively understand the relevant operations of finishing in tooth preparation and the effects after finishing, and play an important guiding role in subsequent actual operations.

[0025] Furthermore, the sequentially detachable tooth preparation teaching supplies also include a restoration area, which is independently arranged from the tooth model and corresponds to the restoration to be worn after tooth preparation. The restoration area is combined with the fixing area in a detachable manner.

[0026] In the present invention, the setting of the restoration area can not only improve the teaching effect, but also play a better guiding role in simulating clinical practice. In the teaching of tooth preparation, students must not only learn how to perform tooth preparation operations, but also understand the relationship between the prepared tooth and the final restoration. By setting a restoration corresponding to the appearance of the tooth after preparation, students can intuitively see whether their preparation results meet the requirements, and help them understand the impact of different preparation methods on the installation of the restoration and the final effect. Furthermore, the restoration area is designed with different shapes and thicknesses according to different restoration types, and a magnetic sheet is provided at the position where the restoration area contacts the fixing area to achieve the fitting or disassembly between the restoration area and the fixing area.

[0027] The present invention further divides the removable area into a guide groove area and a non-guide groove area. Failure to completely remove any of the above areas may result in the prepared tooth shape not meeting the standards, and thus the restoration area cannot perfectly fit the fixed area. The provision of the restoration area can encourage students to reflect on their own operations and deepen their understanding of the correct preparation methods. Furthermore, in actual clinical scenarios, the ultimate goal of tooth preparation is to install a suitable restoration to restore the function and aesthetics of the tooth. The placement of the restoration in the teaching model can simulate a complete series of clinical processes including trial fitting and bonding, allowing students to adapt to the entire process from tooth preparation to restoration installation in advance, cultivating their clinical thinking and operational consistency. This helps students adapt to actual work more quickly and narrows the gap between theory and practice. The restoration area can simulate the materials and structure of real restorations to produce different types of restorations. For example, in posterior full crowns, the shape and color of all-ceramic restorations and porcelain restorations can be simulated to produce different restoration models, which helps students intuitively understand the characteristics of different restorations.

[0028] Furthermore, the sequentially detachable tooth preparation teaching supplies also include a plurality of turning needle models, the shapes of the plurality of turning needle models are partially the same or different from each other, and respectively match the shape of each preparation module.

[0029] The teaching supplies of the present invention are provided with several turning needle models that can accurately match different non-guide groove areas and guide groove areas. In actual teaching scenarios, teachers can hold the turning needle model and demonstrate directly on the corresponding part that has been removed. In this intuitive way, teachers can show students in depth and detail the specific positions of the corresponding parts when preparing the tooth body for grinding, as well as the preparation depth that needs to be reached at each location. Through the teaching supplies provided by the present invention, students can clearly understand in which position the turning needle should be placed during the operation, and what angle it should maintain or to what depth; what shape the tooth will present after each step of grinding is completed; how to eliminate those sharp line angles during the tooth preparation process; and what steps and techniques should be used to prepare the functional sharp bevel.

[0030] In clinical practice, a wide variety of different types of burs are used for tooth preparation. For dental professionals, accurately identifying the various bur types and mastering their specific procedures can be challenging in the early stages of tooth preparation. The teaching aids designed in this invention include tooth models and bur models. In the early stages of training, by using teaching aids that closely resemble the bur morphology and equipped with corresponding bur models, teachers can demonstrate the preparation position and depth in various ways. First, teachers can disassemble the corresponding preparation modules to clearly show students the preparation position and depth in each step. Second, teachers can hold the bur model and demonstrate the disassembled sections intuitively. This intuitive and visual teaching method allows students to familiarize themselves with the morphological characteristics of different burs in advance, enabling them to quickly and accurately select the appropriate bur for each preparation step in subsequent training, and to clearly understand the appropriate position, angle, and depth for the bur. This lays a solid foundation for subsequent training and helps improve students' learning outcomes and their mastery of practical skills.

[0031] Furthermore, the sequentially removable tooth preparation teaching supplies include tooth models corresponding to 32 permanent human teeth. The tooth models can be the same size and proportion as real teeth, or they can be enlarged at different scales. Preferably, the tooth models are enlarged 5-20 times the scale of real teeth, and the restoration area and needle model that match the tooth models are also enlarged at the same scale.

[0032] Furthermore, the optional colors of the removable area, fixed area and repair area include: purple, blue, red, gray, yellow, green, pink, orange, brown, etc. In addition, some non-adjacent areas can also be distinguished by different shades of colors, such as dark yellow, light yellow, etc.

[0033] Furthermore, the sequentially detachable tooth preparation teaching supplies are used for tooth preparation training of posterior tooth full crowns, posterior tooth inlays, posterior occlusal veneers, anterior tooth full crowns, and anterior tooth veneers.

[0034] The technical solution adopted by the present invention to achieve the second purpose is to provide a method for using the sequentially detachable tooth preparation teaching supplies according to the first purpose of the present invention, comprising the following steps:

[0035] S1. Explain the basic methods of tooth preparation and the use of burs; remove the guide groove area according to the tooth preparation operation specifications, and use the corresponding bur model to demonstrate the bur placement and preparation depth when preparing the guide groove;

[0036] S2. Remove the non-guide groove area and, in accordance with the tooth preparation procedure specifications, remove the intersulcular preparation area, interproximal preparation area, functional cusp bevel area, and finishing area in sequence; while removing, use the corresponding needle model to demonstrate the placement and preparation depth of the needle during preparation;

[0037] S3. Match the restoration area with the fixed area to demonstrate the clinical trial fitting process of the restoration and observe the final restoration effect.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] (1) The present invention provides a sequentially detachable tooth preparation teaching device. According to the standardized operation process of clinical tooth preparation, the specific area that needs to be removed in the tooth model is set as a detachable area, which is detachably connected to the fixed area below by magnetic attraction. The detachable area is divided into a guide groove area and a non-guide groove area including multiple preparation modules, and the non-guide groove area is further divided into an inter-groove preparation area, an interproximal preparation area, a functional cusp bevel area, and a finishing area. In the actual teaching demonstration process, the teacher uses the tooth model provided by the present invention and can quickly remove the guide groove area first according to the order of tooth preparation teaching, and then remove the various areas of the non-guide groove area in order, so as to quickly and efficiently complete the demonstration and teaching of the tooth preparation sequence.

[0040] (2) The present invention provides a sequentially detachable tooth preparation teaching device, which has adhesive layers with different bonding strengths between the various parts in the non-guide groove area and between the guide groove area and the non-guide groove area. This can help teachers, in the actual teaching demonstration process, to quickly and preferentially remove the guide groove area according to the order of tooth preparation teaching, and then sequentially remove the various areas of the non-guide groove area, thereby efficiently completing the demonstration and teaching of the tooth preparation sequence. At the same time, it can also help oral medical professionals use the teaching device to accurately grasp the preparation sequence, preparation amount and final preparation effect before tooth preparation training, and has the advantages of repeated demonstration, recycling, reduced teaching costs, and improved teaching efficiency.

[0041] (3) The present invention provides a sequentially detachable tooth preparation teaching aid, which is a personalized teaching aid that can closely fit a variety of teaching methods and emphasizes the professionalism of the methods and the sequential nature of the operating steps in the tooth preparation process. Through the teaching aids of the present invention, students can understand the core points of tooth preparation more clearly and deeply, thereby greatly improving the teaching effect and learning quality. At the same time, the design concept and use method of the present invention can be applied to various types of tooth preparation (such as posterior crowns, anterior veneers, etc.), helping students improve their precision preparation skills and understand the amount of tooth preparation required for different restoration types.

[0042] (4) The present invention provides a sequentially detachable tooth preparation teaching device that provides different types of restoration models according to teaching needs. By simulating various types of restorations, students can adapt to the entire process from tooth preparation to restoration installation in advance, cultivating their clinical thinking and operational consistency. This helps students adapt to actual work more quickly and narrows the gap between theory and practice.

[0043] (5) The present invention provides a sequentially detachable tooth preparation teaching device, which is provided with a number of needle models according to the standardized process of clinical tooth preparation, and can be accurately matched with different guide groove areas and non-guide groove areas. Such a design helps teachers to demonstrate to students in depth and detail the specific position and angle of the needle when preparing the corresponding parts of the tooth, as well as the preparation depth required for each part. It also helps students to become familiar with the morphological characteristics of different needles, quickly and accurately select the appropriate needle in subsequent training, and clearly understand the position, angle and depth of the needle for preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic structural diagram of a mandibular first molar full crown tooth model in a sequentially detachable tooth preparation teaching material provided in Example 1 of the present invention; wherein, Figure 1 A is a schematic diagram of the front side view. Figure 1 B is a schematic diagram of a bird's-eye view;

[0045] Figure 2 for Figure 1 A cross-sectional view; wherein, Figure 2 A. Schematic diagram of the buccal longitudinal section, Figure 2 B is a schematic diagram of the mesiodistal longitudinal section;

[0046] Figure 3 A schematic diagram of a mandibular first molar full crown tooth model in a sequentially detachable tooth preparation teaching kit provided in Example 1 of the present invention;

[0047] Figure 4 This is a schematic diagram of the structure of a maxillary central incisor butt-jointed veneer tooth model in a sequentially detachable tooth preparation teaching material provided in Example 2 of the present invention; wherein, Figure 4 A is a schematic diagram of the front side view. Figure 4 B is a schematic diagram of the front view;

[0048] Figure 5 for Figure 4 A is a schematic diagram of the mesiodistal longitudinal section;

[0049] In the above drawings: 1-removable area; 11-guide groove area; 12-non-guide groove area; 111-guide groove in the occlusal pit and fissure area; 112-guide groove at the incisal end; 113-guide groove in the occlusal cusp ridge area; 114-guide groove at the axial surface; 121-intergroove preparation area; 1211-occlusal intergroove preparation area; 1212-intergroove preparation area at the incisal end; 1213-intergroove preparation area at the axial surface; 122-proximal preparation area; 123-functional cusp bevel area; 124-fine-finishing area; 2-fixation area; 3-restoration area; 4-needle model. DETAILED DESCRIPTION

[0050] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0051] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0052] The present invention will be further described below with reference to specific embodiments, but the present invention is not limited thereto. The tooth models used in the teaching supplies of each embodiment of the present invention are all models of natural human teeth magnified 10 times, and the thickness of each preparation area corresponds to the preparation depth.

[0053] Example 1

[0054] This embodiment provides a sequentially detachable tooth preparation teaching material, including a plurality of tooth models; the tooth model is composed of a detachable area 1, a fixed area 2 and a repair area 3, such as Figure 1 and Figure 2 As shown. The detachable area 1 is as shown. Figure 1 As shown, the detachable area 1 is composed of a plurality of independent detachable preparation modules of different colors, and the preparation modules include a guide groove area 11 and a non-guide groove area 12.

[0055] like Figure 1 and Figure 2The figure shows the use of teaching supplies for full crown preparation of mandibular first molar (belonging to teaching supplies for full crown preparation of posterior teeth), wherein the guide grooves 111 in the occlusal pit and fissure area and the guide grooves 113 in the occlusal cusp ridge area are different shades of green, with a thickness of 15mm; the occlusal intergroove preparation area 1211 is blue, with a thickness of 15mm; the axial guide grooves 114 are red, with a thickness of 10mm; the axial intergroove preparation area 1213 is pink, with a thickness of 10mm; the interproximal preparation area 122 is gray, with a thickness of 10mm; the functional cusp bevel area 123 is brown, The thickness is 10mm; the finishing area 124 is dark yellow and 5mm thick; wherein, a first bonding layer is provided between the pit and fissure area guide groove 111, the occlusal cusp ridge area guide groove 113 and the axial surface guide groove 114 and the finishing area 124, and a second bonding layer is provided between the occlusal inter-groove preparation area 121, the axial inter-groove preparation area 1213, the proximal surface preparation area 122 and the functional cusp bevel area 123 and the finishing area 124. Both the first bonding layer and the second bonding layer are double-sided adhesive tapes that can be repeatedly pasted and removed, and the bonding strength of the second bonding layer is higher than that of the first bonding layer. A magnetic sheet is provided between the finishing area 124 and the fixing area 2, which can be attached and removed by magnetic attraction. The fixing area 2 is light yellow; the repair area 3 is white, wherein a magnetic sheet is provided between the repair area 3 and the fixing area 2, which can be attached and removed by magnetic attraction.

[0056] In this embodiment, the steps for using the teaching supplies are as follows:

[0057] 1. During the tooth preparation experiment class, teachers will perform tooth disassembly in the order of occlusal surface - axial surface - interproximal surface - functional cusp bevel - finishing. When disassembling the occlusal surface, the guide grooves 111 in the occlusal pit and fissure area and the guide grooves 113 in the occlusal ridge area will be removed first, and then the intergrooved preparation area 121 will be removed. When removing the occlusal guide grooves, the matching turning needle model 4 can be used to place it on the occlusal surface to demonstrate the position and angle of the turning needle. When disassembling the axial surface, the axial guide grooves 114 will be removed first, and then the intergrooved preparation area 1213 will be removed. Then, the interproximal preparation area 122 will be removed, and then the functional cusp bevel area 123 will be removed. Finally, the finishing area 124 will be removed. The above steps will demonstrate the standardized process and preparation effect of tooth preparation. The different colors between the preparation modules will help students master and remember the standardized preparation sequence. The turning needle model 4 can be used in each step to explain the position angle and preparation depth of the turning needle when preparing the tooth surface. After completing the tooth preparation, the teacher will separately show the restoration area 3 and explain the type and shape of the restoration. Finally, by fitting the restoration area 3 with the fixed area 2, the teacher will show the students the final restoration effect. Figure 3 During the teaching process, teachers can repeatedly disassemble and paste one or more preparation modules to focus on the key and difficult points of tooth preparation, so that students can grasp and understand the relevant content more clearly.

[0058] 2. After the teacher's explanation and demonstration, separate the restoration area 3 from the fixed area 2 of the teaching tooth model. Paste the removed preparation modules onto the fixed area 2 in sequence to restore the tooth model. Following the teacher's explanation, students can follow the steps shown to disassemble the corresponding preparation modules. This will help them understand the standard tooth preparation amounts and steps, and master each step and the final preparation results. Students can also use the restoration area to understand the shape and size of the posterior crown. The final restoration effect of the posterior crown can be intuitively understood by the fit of the fixed and restoration areas.

[0059] Example 2

[0060] This embodiment is similar to embodiment 1, except that this embodiment is a teaching material for preparing veneers for the maxillary central incisor (belonging to a teaching material for preparing veneers for anterior teeth). Figure 4 and 5 As shown, the incisal guide groove 112 is pink and 10 mm thick; the inter-incisal groove preparatory area 1212 is red and 10 mm thick; the axial surface guide groove 114 is light green, with a thickness of 9 mm at the incisal 1 / 3, 7 mm at the middle 1 / 3, and 5 mm at the neck 1 / 3; the inter-axial surface groove preparatory area 1213 is dark green, with a thickness of 9 mm at the incisal 1 / 3, 7 mm at the middle 1 / 3, and 5 mm at the neck 1 / 3; the finishing area 124 is dark yellow and 3 mm thick; a first adhesive layer is provided between the incisal guide groove 112 and the axial surface guide groove 114 and the finishing area 124, and a second adhesive layer is provided between the inter-incisal groove preparatory area 1212 and the inter-axial surface groove preparatory area 1213 and the finishing area 124. Both the first adhesive layer and the second adhesive layer are double-sided adhesive tapes that can be repeatedly attached and removed, and the bonding strength of the second adhesive layer is higher than that of the first adhesive layer. The fixing area 2 is light yellow, and the repair area 3 is white. A magnetic sheet is provided between the finishing area 124 and the fixing area 2, allowing for magnetic attachment and removal. A magnetic sheet is provided between the repair area 3 and the fixing area 2, allowing for magnetic attachment and removal.

[0061] In the present invention, the steps of using the teaching supplies are as follows:

[0062] 1. During the tooth preparation lab class, the teacher demonstrates the steps of incisal tip, axial surface, and finishing. At the incisal tip, first remove the incisal guide groove 112, then the incisal groove preparation area 1212. At the axial surface, first remove the axial surface guide groove 114, then the axial surface preparation area 1213. After removing the axial surface guide groove, the corresponding needle model 4 can be placed on the axial surface to observe the needle placement angle and position when preparing this surface. Finally, remove the finishing area 124. The above steps demonstrate the standardized tooth preparation process and preparation results. Furthermore, the different colors between the preparation modules help students master and memorize the standard preparation sequence. After completing tooth preparation, the teacher separately demonstrates the restoration area and explains the types and morphologies of the restoration. Finally, by bonding the restoration area 3 to the fixing area 2, the final restoration effect is demonstrated to the students. During the teaching process, the teacher can repeatedly disassemble and attach one or more preparation modules to address the key and difficult points of tooth preparation, so that students can more clearly grasp and understand the relevant content.

[0063] 2. After the teacher completes the explanation and demonstration, separate the restoration area 3 from the fixed area 2 of the teaching tooth model. The removed preparation modules are then sequentially affixed to the fixed area 2 to restore the tooth model. Following the teacher's explanation, students can follow the steps shown to disassemble the corresponding preparation modules. This will help them understand the standard tooth preparation amounts and procedures, and master each step and the final preparation results. Students can also use the restoration area to understand the shape and size of the posterior veneer, and then visually understand the final restoration effect of the posterior veneer by fitting the fixed area and restoration area together.

[0064] The above are only preferred embodiments of the present invention and do not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the contents of the present invention specification should be included in the protection scope of the present invention.

Claims

1. A sequentially detachable tooth preparation teaching device, characterized in that: include: A plurality of tooth models; the tooth models include a detachable area (1) and a fixed area (2) below the detachable area (1); The removable area (1) corresponds to a specific area that needs to be removed during tooth preparation; the fixed area (2) corresponds to the prepared body after tooth preparation; The detachable area (1) includes a guide groove area (11) and a non-guide groove area (12); the guide groove area (11) and the non-guide groove area (12) each include a plurality of independently detachable preparatory modules; A first adhesive layer is provided between the guide groove area (11) and the non-guide groove area (12), and a second adhesive layer is provided between the preparatory modules in the non-guide groove area (12), wherein the adhesive strength of the second adhesive layer is higher than that of the first adhesive layer.

2. The sequentially detachable tooth preparation teaching device according to claim 1, characterized in that: The guide groove area (11) comprises an occlusal pit and fissure area guide groove (111), an incisal guide groove (112), an occlusal cusp ridge area guide groove (113), and an axial guide groove (114).

3. The sequentially detachable tooth preparation teaching device according to claim 2, characterized in that: The non-guide groove area (12) includes an inter-groove preparation area (121), an adjacent surface preparation area (122), a functional tip bevel area (123) and a finishing area (124); adjacent preparation modules in the non-guide groove area (12) are connected by bonding.

4. The sequentially detachable tooth preparation teaching device according to claim 3, characterized in that: The inter-groove preparation area (121) includes an occlusal inter-groove preparation area (1211), an incisal inter-groove preparation area (1212), and an axial inter-groove preparation area (1213).

5. The sequentially detachable tooth preparation teaching device according to claim 4, characterized in that: The functional cusp bevel area (123) is arranged in the posterior tooth full crown, posterior tooth inlay and posterior occlusal veneer model, and is located between the axial surface groove preparation area (1213) and the axial surface guide groove area (114) and the finishing area (124), corresponding to the buccal bevel of the buccal cusp of the mandibular posterior tooth and the palatal bevel of the palatal cusp of the maxillary posterior tooth that need to be ground during tooth preparation.

6. The sequentially detachable tooth preparation teaching device according to claim 3, characterized in that: The finishing area (124) is located below the guide groove area (11), the inter-groove preparation area (121), the adjacent surface preparation area (122) and the functional tip bevel area (123), and is located above the fixing area (2) and surrounds the fixing area (2), corresponding to the area that needs to be trimmed and polished during tooth preparation; the upper surface of the finishing area (124) is connected to the guide groove area (11), the inter-groove preparation area (121), the adjacent surface preparation area (122) and the functional tip bevel area (123) by bonding, and the lower surface of the finishing area (124) is provided with a magnetic sheet for magnetically connecting with the fixing area (2), and the connection strength between the magnetic sheet and the fixing area (2) is higher than the bonding strength of the second bonding layer.

7. The sequentially detachable tooth preparation teaching device according to claim 1, characterized in that: The sequentially detachable tooth preparation teaching supplies further include a restoration area (3), which is independently arranged from the tooth model and corresponds to a restoration to be worn after tooth preparation. The restoration area (3) is combined with the fixing area (2) by means of a magnetic connection.

8. The sequentially detachable tooth preparation teaching device according to claim 1, characterized in that: The sequentially detachable tooth preparation teaching supplies further include a plurality of turning needle models (4), wherein the shapes of the plurality of turning needle models (4) are partially the same or different from each other and respectively match the shapes of the preparation modules.

9. The sequentially detachable tooth preparation teaching device according to claim 1, characterized in that: The sequentially detachable tooth preparation teaching supplies are used for one or more of the tooth preparation training of posterior tooth full crowns, posterior tooth inlays, posterior occlusal veneers, anterior tooth full crowns, and anterior tooth veneers.

10. A method for using the sequentially detachable tooth preparation teaching product according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Explain the basic methods of tooth preparation and how to use the bur; remove the guide groove area (11) according to the tooth preparation operation specifications, and use the corresponding bur model (4) to demonstrate the position and preparation depth of the bur when preparing the guide groove; S2. Remove the non-guide groove area (12), and remove the inter-groove preparation area (121), the interproximal preparation area (122), the functional cusp bevel area (123), and the finishing area (124) in sequence according to the tooth preparation operation specifications; while removing, use the corresponding needle model (4) to demonstrate the needle placement and preparation depth during preparation; S3. Match the restoration area (3) with the fixed area (2) to demonstrate the clinical trial wearing process of the restoration and observe the final restoration effect.

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