Tooth preparation teaching aid capable of being detached in sequence and use method thereof

Abstract

The invention provides a sequentially detachable tooth preparation teaching aid. The sequentially detachable tooth preparation teaching aid comprises a plurality of tooth models, the tooth body model comprises a detachable area and a fixed area below the detachable area, and the detachable area corresponds to a specific area needing to be ground in tooth body preparation; the fixing area corresponds to a prepared body after tooth preparation; the detachable area comprises a guide groove area and a non-guide groove area; each of the guide trench region and the non-guide trench region comprises a plurality of independent and detachable preparation modules; a first bonding layer and a second bonding layer are arranged between the guiding groove area and the non-guiding groove area and between the preparation modules in the non-guiding groove area respectively, and the bonding strength of the second bonding layer is higher than that of the first bonding layer. The teaching aid further comprises a repairing area and a plurality of machine needle models. The invention further provides a using method of the teaching aid. The tooth preparation teaching quality and teaching effect can be improved, students are helped to master the tooth preparation sequence and operation difficulty, and the tooth preparation teaching aid has the advantages of repeated demonstration, recycling, reduction of teaching consumable cost and the like.

Description

Technical Field

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

[0002] Tooth preparation is a necessary and basic skill for dental professionals and a required course in the experimental practice teaching of dental prosthodontics. In order to cultivate the tooth preparation skills of dental professionals, it is very important to strengthen the experimental practice teaching of dental prosthodontics.

[0003] In traditional oral rehabilitation 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, so that students can understand the detailed preparation process through the screen, but 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, and the preparation body after the 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 teeth. The overall preparation process takes a long time, which is not conducive to the display 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 the key points and difficult points. It cannot be recycled, which also increases the teaching cost.

[0004] In summary, the existing molds used in oral prosthodontics experimental teaching cannot effectively improve the efficiency of classroom teaching, nor are they conducive to students' efficient learning of tooth preparation knowledge and skills. This results in students not being able to clearly and intuitively grasp the operation sequence and amount of tooth preparation before tooth preparation training, and not having an objective understanding of the final preparation effect, which limits students' ability to self-evaluate the final preparation quality.

[0005] Therefore, it is necessary to develop a dental prosthodontics teaching product that can help teachers explain the standardized operation process of tooth preparation. It can not only help teachers to conveniently and quickly demonstrate the standardized operation process, but also demonstrate the final preparation and restoration effects. It also has the advantages of repeated demonstration, recycling, and reducing the cost of teaching consumables. This is of great significance for students to more clearly master the steps and amount of tooth preparation and understand the final preparation and restoration effects. By using this teaching product, teachers can optimize the teaching process, thereby improving 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 supplies which can not only help teachers to demonstrate the standardized operation process and final preparation effect of tooth preparation more conveniently and quickly, but also have 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 capabilities 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 purposes is: to provide a sequentially detachable tooth preparation teaching product, including: a plurality of tooth models; The tooth model includes a removable area and a fixed area therebelow; 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; The removable area includes a guide groove area and a non-guide groove area; the guide groove area and the non-guide groove area both include a number of independently removable preparation modules; 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.

[0009] The general idea of ​​the present invention is as follows: 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 rehabilitation 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 a plurality of 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 give priority to quickly dismantling the guide groove area according to the order of tooth preparation teaching, and then dismantle 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 to demonstrate the standardized operation process and final preparation effect of tooth preparation more conveniently and quickly, but also help oral medicine professionals to use the teaching supplies by themselves before tooth preparation training to accurately grasp the preparation sequence, preparation amount and final preparation effect, and have the advantages of repeated demonstration, recycling, reduced teaching costs, and improved teaching efficiency.

[0010] 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.

[0011] 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 each adjacent preparation module in the non-guide groove area is connected by bonding. In clinical standards, the area outside the guide groove of each preparation surface is usually unified as the part to be ground in the second step, but the present invention, combined with actual teaching experience, finds 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, so that the operation is more standardized.

[0012] 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.

[0013] Furthermore, the proximal surface preparation area corresponds to the area of ​​the proximal surface that needs to be ground during tooth preparation.

[0014] Furthermore, the first adhesive layer and the second adhesive layer are both made of reusable adhesive, including double-sided tape. Preferably, grooves are provided at the contacting parts of the preparatory modules to accommodate the double-sided adhesive so that the preparatory modules can be better fitted. When the double-sided adhesive becomes less sticky after multiple uses, the old double-sided adhesive can be torn off and replaced with a new adhesive layer, thereby realizing the recycling of teaching aids.

[0015] Furthermore, the first adhesive layer and the second adhesive layer are different in one or more of brand, model, material, and sensitivity to peeling force, and thus have different adhesive strengths. In addition, the surface of the preparation area provided with the adhesive layer can also be processed, for example, the non-guide groove area has a higher surface roughness than the guide groove area, thereby improving the adhesive strength of the second adhesive layer in the fixed area, making the first adhesive layer easier to separate from other parts than the second adhesive layer, and realizing the priority and rapid removal of the guide groove area.

[0016] Furthermore, the lower surface of the finishing area, the upper surface of the fixing area and the lower surface of the repairing area are all provided with magnetic sheets for magnetic attraction. The finishing area and the fixing area, as well as the repairing area and the fixing area can be connected by magnetic attraction. The connection strength between the magnetic sheet and the fixing area is higher than the bonding strength of the second bonding layer.

[0017] Furthermore, the guide groove area and any non-guide groove area may have different colors. The thickness of the guide groove area and the non-guide groove area (ie, the preparation depth) may be changed according to the requirements of different tooth preparation experiments.

[0018] Furthermore, the non-guide groove area also includes a functional cusp bevel area, which is arranged 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 off during tooth preparation. The present application has been observed and found in depth in combination with actual clinical practice that in the process of tooth preparation, oral medical professionals often ignore the preparation of the functional cusp bevel when preparing the guide groove and the non-guide groove area according to the conventional process, and fail to properly eliminate the sharp line angle. Insufficient preparation of the functional cusp bevel may lead to weakening of the retention shape and resistance shape. At the same time, the poor restoration of the occlusal morphology of the restoration or the insufficient thickness of the functional cusp area will affect the occlusal function or cause the restoration to be damaged or even fail to repair. Good preparation of the functional cusp bevel 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.

[0019] Furthermore, the finishing area is located below the guide groove area, the intergroove 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 intergroove 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 suction sheet for magnetic connection with the fixed area. According to clinical standards, it is only required to trim and polish the preparation body in the final stage of the tooth preparation process, but the specific parts 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 in a targeted manner to facilitate students to understand where sharp line angles will appear after the initial preparation is completed, and what methods should be used to grind off these sharp line angles to make the preparation body 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 practical operations.

[0020] 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 detachably combined with the fixing area.

[0021] 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 types of restorations, and a magnetic suction 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.

[0022] The present invention further divides the removable area into a guide groove area and a non-guide groove area. If any of the above areas is not completely removed, the prepared tooth shape may not meet the standard, and the restoration area cannot fit perfectly with the fixed area. The setting of the restoration area can prompt students to reflect on their own operations and deepen their understanding of the correct preparation method. Furthermore, in actual clinical scenarios, the ultimate goal of tooth preparation is to install a suitable restoration to restore the function and beauty of the teeth. Setting the restoration in the teaching model can simulate a series of complete clinical processes including trial wearing and bonding, allowing students to adapt to the whole process from tooth preparation to restoration installation in advance, and cultivate their clinical thinking and operational consistency. This helps students adapt to actual work faster and reduce the gap between theory and practice. Among them, the restoration area can simulate the materials and structures of real restorations to make different types of restorations. For example, in the full crown of posterior teeth, the morphology and color of all-ceramic restorations and porcelain restorations can be simulated, and different restoration models can be produced, which helps students intuitively understand the characteristics of different restorations.

[0023] 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 are matched with the shapes of the preparation modules respectively.

[0024] 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 an actual teaching scenario, the teacher can hold the turning needle model and directly demonstrate on the corresponding part that has been removed. In this intuitive way, the teacher can show students in depth and detail the specific positions of the corresponding parts of the tooth preparation and 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 presents 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.

[0025] In clinical practice, there are many types of needles used for tooth preparation, and the models are different. For oral medicine professionals, it is often difficult to accurately identify the types of various needles and master their specific operation methods in the early stage of learning tooth preparation. The teaching supplies designed by the present invention include tooth models and needle models. In the early stage of teaching and training, by using teaching aids that are highly related to the shape of the needle and equipped with corresponding needle models, teachers can carry out teaching demonstrations from many aspects: on the one hand, teachers can clearly show students the preparation position and depth in this step by disassembling the corresponding preparation module; on the other hand, teachers can hold the needle model and perform intuitive gesture demonstrations on the corresponding parts that have been disassembled. With this intuitive and vivid teaching method, students can be familiar with the morphological characteristics of different needles in advance, so that in the different preparation steps of subsequent training, they can quickly and accurately select suitable needles and clarify the position, angle and depth of the needle for preparation. This lays a solid foundation for students' subsequent training and helps to improve their learning effect and the mastery of operation skills.

[0026] Furthermore, the sequentially detachable tooth preparation teaching supplies include tooth models corresponding to 32 permanent teeth of a person, and the tooth models can be the same size and proportion as the real teeth, or can be enlarged at different proportions. Preferably, the tooth model is enlarged at a proportion of 5-20 times that of the real teeth, and accordingly, the restoration area and the needle model matching the tooth model are also enlarged at the same proportion.

[0027] 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.

[0028] 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.

[0029] 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 one of the purposes of the present invention, comprising the following steps: S1. Explain the basic methods of tooth preparation and the use of the bur; remove the guide groove area according to the tooth preparation operation specifications, and use the corresponding bur model to demonstrate the position and preparation depth of the bur when preparing the guide groove; S2. Remove the non-guide groove area, and remove the inter-groove preparation area, interproximal preparation area, functional cusp bevel area and finishing area in sequence according to the tooth preparation operation specifications; while removing, use the corresponding needle model to demonstrate the placement position and preparation depth of the needle during preparation; S3. Match the restoration area with the fixed area to demonstrate the clinical trial-wearing process of the restoration and observe the final restoration effect.

[0030] Compared with the prior art, the present invention has the following beneficial effects: (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, and the detachable area 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 adjacent surface 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 according to the order of tooth preparation teaching, the guide groove area can be quickly and preferentially removed, and then the various areas of the non-guide groove area can be removed in order, so as to quickly and efficiently complete the demonstration and teaching of the tooth preparation sequence.

[0031] (2) The present invention provides a sequentially detachable tooth preparation teaching device, which has adhesive layers with different adhesive strengths between the parts in the non-guide groove area and between the guide groove area and the non-guide groove area. This can help teachers to quickly and preferentially remove the guide groove area in accordance with the order of tooth preparation teaching during the actual teaching demonstration, and then remove the non-guide groove area in order, 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.

[0032] (3) The present invention provides a sequentially detachable tooth preparation teaching aid, which is a personalized teaching aid that can closely fit various 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 ideas and usage methods of the present invention can be applied to a variety of tooth preparation types (such as posterior crowns, anterior veneers, etc.), helping students improve their precision preparation skills and understand the amount of tooth preparation required for different types of restorations.

[0033] (4) The present invention provides a sequentially detachable tooth preparation teaching material, which 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, and cultivate their clinical thinking and operational consistency. This helps students adapt to actual work more quickly and reduces the gap between theory and practice.

[0034] (5) The present invention provides a sequentially detachable tooth preparation teaching material, which sets a number of needle models according to the standardized process of clinical tooth preparation, and can accurately match different guide groove areas and non-guide groove areas. Such a design helps teachers to show students in depth and detail the specific position and angle of the needle when preparing and grinding the corresponding parts of the tooth, as well as the preparation depth that needs to be achieved at each location. 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 clarify the position, angle and depth of the needle for preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the structure 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; 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; Figure 3 A schematic diagram of a tooth-wearing method 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; Figure 4 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 4A is a schematic diagram of the front side view. Figure 4 B is a schematic diagram of the front view; Figure 5 for Figure 4 A is a schematic diagram of the mesiodistal longitudinal section; 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-inter-groove preparation area; 1211-occlusal inter-groove preparation area; 1212-incisal inter-groove preparation area; 1213-axial inter-groove preparation area; 122-proximal preparation area; 123-functional cusp bevel area; 124-fine finishing area; 2-fixation area; 3-restoration area; 4-needle model. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] 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.

[0038] The present invention is further described below in conjunction with specific embodiments, but is not intended to be limiting of the present invention. The tooth models used in the teaching supplies of each embodiment of the present invention are all models of natural human teeth that are 10 times larger, and the thickness of each preparation area corresponds to the preparation depth.

[0039] Example 1 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 removable area 1 is as shown Figure 1 As shown, the removable area 1 is composed of a plurality of independently removable preparation modules of different colors, and the preparation modules include a guide groove area 11 and a non-guide groove area 12.

[0040] like Figure 1 and Figure 2The figure shows the use of the teaching supplies for full crown preparation of the mandibular first molar (belonging to the 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 green of different brightness and 15 mm thick; the occlusal inter-groove preparation area 1211 is blue and 15 mm thick; the axial guide grooves 114 are red and 10 mm thick; the axial inter-groove preparation area 1213 is pink and 10 mm thick; the proximal preparation area 122 is gray and 10 mm thick; 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 guide grooves 111 in the pit and fissure area, the guide grooves 113 in the occlusal cusp ridge area, and the guide grooves 114 in the axial surface, and the finishing area 124; a second bonding layer is provided between the occlusal intergroove preparation area 121, the axial intergroove preparation area 1213, the proximal 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.

[0041] In this embodiment, the steps for using the teaching supplies are as follows: 1. In the tooth preparation experiment class, teachers disassemble in the order of occlusal surface-axial surface-proximal 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 cusp ridge area are removed first, and then the inter-groove preparation area 121 of the occlusal surface is removed. When removing the occlusal guide grooves, the matching needle model 4 can be used to place it on the occlusal surface to show the position and angle of the needle. When disassembling the axial surface, the axial guide grooves 114 are removed first, and then the inter-groove preparation area 1213 of the axial surface is removed; then the proximal preparation area 122 is removed, and then the functional cusp bevel area 123 is removed; finally, the finishing area 124 is removed. The above steps show the standardized process and preparation effect of tooth preparation; the different colors between the preparation modules help students master and remember the standardized preparation sequence; the needle model 4 can be used in each step to explain the position angle and preparation depth of the 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 In the teaching process, teachers can repeatedly disassemble and paste one or some 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.

[0042] 2. After the teacher has finished explaining and demonstrating, separate the restoration area 3 and the fixed area 2 of the teaching tooth model, and stick the removed preparation modules on the fixed area 2 in turn to restore the tooth model. After the teacher's explanation, students can follow the steps shown by the teacher to disassemble the corresponding preparation modules by themselves to understand the standardized tooth preparation amount and steps, master each step and the final preparation effect. Students can also use the restoration area to understand the shape and size of the posterior tooth crown, and then intuitively understand the final restoration effect of the posterior tooth crown through the fit of the fixed area and the restoration area.

[0043] Example 2 This embodiment is similar to embodiment 1, except that this embodiment is a teaching material for preparing veneers for maxillary central incisors (belonging to teaching materials for preparing veneers for anterior teeth). Figure 4 and 5 As shown. The cutting end guide groove 112 is pink, with a thickness of 10 mm; the cutting end groove preparation area 1212 is red, with a thickness of 10 mm; the axial surface guide groove 114 is light green, with a thickness of 9 mm at the cutting 1 / 3, 7 mm at the middle 1 / 3, and 5 mm at the neck 1 / 3; the axial surface groove preparation area 1213 is dark green, with a thickness of 9 mm at the cutting 1 / 3, 7 mm at the middle 1 / 3, and 5 mm at the neck 1 / 3; the finishing area 124 is dark yellow, with a thickness of 3 mm; wherein, a first adhesive layer is provided between the cutting end guide groove 112 and the axial surface guide groove 114 and the finishing area 124, and a second adhesive layer is provided between the cutting end groove preparation area 1212 and the axial surface groove preparation area 1213 and the finishing area 124, and both the first adhesive layer and the second adhesive layer are double-sided adhesives that can be repeatedly pasted 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 repairing area 3 is white. A magnetic sheet is provided between the finishing area 124 and the fixing area 2, which can be attached and removed by magnetic attraction, and a magnetic sheet is provided between the repairing area 3 and the fixing area 2, which can be attached and removed by magnetic attraction.

[0044] In the present invention, the steps of using the teaching supplies are as follows: 1. In the tooth preparation experiment class, the teacher demonstrates the steps of incisal end-axial surface-fine finishing. In the incisal end part, first remove the incisal end guide groove 112, and then remove the incisal end groove preparation area 1212; in the axial surface part, first remove the axial surface guide groove 114, and then remove the axial surface groove 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 placement angle and position of the needle when preparing the surface; finally remove the fine finishing area 124. The above steps show the standardized process and preparation effect of tooth preparation; at the same time, the different colors between the preparation modules help students master and remember the standardized preparation sequence. After completing the tooth preparation, the teacher separately shows the restoration area to explain the type and shape of the restoration, and finally shows the final restoration effect to the students by fitting the restoration area 3 with the fixed area 2. In the teaching process, for the key and difficult points of tooth preparation, the teacher can repeatedly disassemble and paste one or some preparation modules to facilitate students to master and understand the relevant content more clearly.

[0045] 2. After the teacher has finished explaining and demonstrating, separate the restoration area 3 and the fixed area 2 of the teaching tooth model, and stick the removed preparation modules on the fixed area 2 in turn to restore the tooth model. After the teacher's explanation, students can follow the steps shown by the teacher to disassemble the corresponding preparation modules by themselves to understand the standardized tooth preparation amount and steps, master each step and the final preparation effect. Students can also use the restoration area to understand the shape and size of the posterior occlusal veneer, and then intuitively understand the final restoration effect of the posterior occlusal veneer through the fitting of the fixed area and the restoration area.

[0046] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the contents of the specification of the present invention 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) therebelow; 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) comprises a guide groove area (11) and a non-guide groove area (12); the guide groove area (11) and the non-guide groove area (12) both comprise a plurality of independently detachable preparation 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 product according to claim 1, characterized in that: The guide groove area (11) comprises an occlusal pit and fissure area guide groove (111), an incisal end guide groove (112), an occlusal cusp ridge area guide groove (113) and an axial surface guide groove (114).

3. The sequentially detachable tooth preparation teaching product according to claim 2, characterized in that: The non-guiding groove area (12) comprises 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-guiding groove area (12) are connected by bonding.

4. The sequentially detachable tooth preparation teaching product according to claim 3, characterized in that: The inter-groove preparation area (121) comprises 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 product 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 teeth and the palatal bevel of the palatal cusp of the maxillary posterior teeth that need to be ground during tooth preparation.

6. The sequentially detachable tooth preparation teaching product according to claim 3, characterized in that: The finishing area (124) is located below the guide groove area (11), the intergroove preparation area (121), the proximal 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 an 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 intergroove preparation area (121), the proximal 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 attraction sheet for magnetically connecting with the fixing area (2), and the connection strength between the magnetic attraction sheet and the fixing area (2) is higher than the bonding strength of the second bonding layer.

7. The sequentially detachable tooth preparation teaching product 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 product 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 are respectively matched with the shapes of the preparation modules.

9. The sequentially detachable tooth preparation teaching product 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 the use of 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 placement position and preparation depth of the needle during preparation; S3. Match the restoration area (3) with the fixation area (2) to demonstrate the clinical trial wearing process of the restoration and observe the final restoration effect.

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