CN119889142A - Sequentially detachable dental preparation teaching article and use method thereof - Google Patents

Abstract

The invention provides a tooth preparation teaching article capable of being detached in sequence, which comprises a plurality of tooth models, wherein each tooth model comprises a detachable area and a fixed area below the detachable area, the detachable area corresponds to a specific area to be abraded in tooth preparation, the fixed area corresponds to a prepared body after tooth preparation, the detachable area comprises a guide groove area and a non-guide groove area, each guide groove area and each non-guide groove area comprise a plurality of independent detachable preparation modules, a first bonding layer and a second bonding layer are respectively arranged between the guide groove area and the non-guide groove area and between the preparation modules in the non-guide groove area, and the bonding strength of the second bonding layer is higher than that of the first bonding layer. The teaching appliance further comprises a repair area and a plurality of car needle models. The invention also provides a use method of the teaching article. The invention can improve the tooth preparation teaching quality and teaching effect, help students grasp tooth preparation sequence and operation difficulty, and has the advantages of repeated demonstration, cyclic use, reduction of teaching consumable cost and the like.

Description

Sequentially detachable dental preparation teaching article and use method thereof

Technical Field

The invention relates to a teaching article for carrying out dental preparation training on an oral medical professional in the experimental teaching of dental restoration, belongs to the field of oral medical teaching, and particularly relates to a detachable dental preparation teaching article and a use method thereof.

Background

Dental preparation is a necessary skill and basic skill of an oral medical professional, and is a necessary lesson in oral restoration experiment practice teaching. In order to cultivate dental preparation skills of stomatology professionals, it is important to strengthen experimental practice teaching of dental restoration.

In the traditional experiment teaching of oral cavity restoration, a teacher often adopts a slide form to explain dental preparation steps and requirements to students in two dimensions, or carries out real operation through multimedia, so that students can know detailed preparation processes through screens, but the students cannot intuitively feel the dental preparation processes in the explanation mode. In other teaching, model teeth are used for on-site teaching, but the model teeth are usually small in size, students are difficult to clearly observe operation points and preparation amounts, and the preparation bodies after tooth preparation cannot enable all students to observe and perceive at the same time, so that the knowledge grasping degree of the students is affected to a certain extent. More importantly, in the model, a teacher usually adopts a grinding mode to display the tooth preparation steps of model teeth, the whole preparation process is long in time consumption and is unfavorable for displaying the preparation sequence, in addition, after the model teeth are used, the preparation area is ground, repeated operation and repeated demonstration on heavy difficulties cannot be performed, the model teeth cannot be recycled, and the teaching cost is increased.

In summary, the existing mold applied to experimental teaching of oral restoration cannot effectively improve the efficiency of classroom teaching, and is also unfavorable for students to efficiently learn dental preparation knowledge and skills. This results in that the student cannot clearly and intuitively grasp the operation sequence and the preparation amount of the dental preparation before performing the dental preparation training, and the final preparation effect is not known objectively enough, and the self-evaluation ability of the student on the final preparation quality is limited.

Therefore, it is necessary to develop an oral restoration teaching product capable of helping teachers explain standardized operation procedures of dental preparation, not only can help teachers conveniently and rapidly display standardized operation procedures, but also can display final preparation effects and restoration effects, and further has the advantages of repeated demonstration, recycling, reduction of teaching consumable cost and the like, and has important significance for students to grasp dental preparation steps and dental preparation amounts and know final preparation effects and restoration effects more clearly. Through using this teaching articles for use, can help the teacher optimize the teaching process to promote the operation skill of oral medical professional.

Disclosure of Invention

The invention aims to provide a sequential detachable dental preparation teaching article which not only can help a teacher to conveniently and rapidly display a standardized operation flow and a final preparation effect of dental preparation, but also has repeated demonstration, recycling, teaching cost reduction and teaching efficiency improvement.

The second purpose of the invention is to provide a method for using the sequentially detachable dental preparation teaching appliance, which not only can help teachers to conveniently and rapidly display the standardized operation flow and the final preparation effect of dental preparation, but also has the advantages of repeated demonstration, recycling, reducing the teaching cost and improving the teaching efficiency.

The invention provides a tooth preparation teaching appliance which is detachable in sequence, comprising a plurality of tooth models;

The dental model comprises a detachable area and a fixed area below the detachable area;

the detachable area corresponds to a specific area which needs to be ground in tooth preparation;

the detachable zone comprises a guide channel zone and a non-guide channel zone, wherein the guide channel zone and the non-guide channel zone comprise a plurality of independent detachable preparation modules;

A first bonding layer is arranged between the guide groove area and the non-guide groove area, a second bonding layer is arranged between the preparation modules in the non-guide groove area, and the bonding strength of the second bonding layer is higher than that of the first bonding layer.

The general idea of the invention is as follows:

In order to solve the problem that teachers cannot intuitively and clearly teach tooth preparation sequence, preparation effect and restoration effect in oral cavity restoration experiments in the prior art, the invention provides a tooth preparation teaching article capable of detachably carrying out sequence, a specific area, which is required to be ground off in corresponding tooth preparation, in a tooth model is set as a detachable area, the detachable area is detachably connected with a fixed area below the specific area through magnetic attraction, the detachable area is further divided into a guide ditch area and a non-guide ditch area, the guide ditch area comprises a plurality of preparation modules, and meanwhile, bonding layers between the preparation modules in the non-guide ditch area and between the guide ditch area and the non-guide ditch area are set to have different bonding strengths. In the actual teaching display process, a teacher uses the dental model provided by the invention to remove the guide channel areas preferentially and rapidly according to the sequence of dental preparation teaching, and then remove all areas of the non-guide channel areas sequentially, so that the display and teaching of the dental preparation sequence are completed efficiently. The dental preparation teaching appliance provided by the invention not only can remarkably improve the teaching efficiency of teachers, help the teachers to more conveniently and rapidly display the standardized operation flow and the final preparation effect of dental preparation, but also can help the dental medical professionals to accurately master the preparation sequence, the preparation amount and the final preparation effect by self-using the teaching appliance before dental preparation training, and has the advantages of repeated demonstration, cyclic use, reduction of teaching cost, improvement of teaching efficiency and the like.

Further, the guide groove region comprises a junction surface fossa groove region guide groove, a cutting end guide groove, a junction surface dental ridge region guide groove and an axial surface guide groove.

Further, the non-guiding groove region comprises an inter-groove preparation region, an adjacent surface preparation region, a functional tip inclined surface region and a finishing region, and adjacent preparation modules in the non-guiding groove region are connected in an adhesive mode. In clinical standards, the area outside the guide groove of each preparation surface is generally unified as the part to be ground off in the second step, but the invention combines with practical teaching experience to find that in the dental preparation teaching process, students often have no clear idea how to grind off a large range of preparation surfaces normally, and the grinding off areas are different in sequence, so that the final preparation effect is influenced. Therefore, the invention divides the part to be ground off in the second step clinically into a ditch preparation area, an adjacent surface preparation area, a functional tip inclined surface area and a finishing area through a modularized design. The inter-ditch preparation area, the adjacent surface preparation area and the functional tip inclined surface area are connected with the finishing area in an adhering mode, the finishing area is connected with the fixing area in a magnetic attraction mode, and the design is convenient for students to fully understand that after finishing the preparation of the guide ditch, other areas need to be ground according to what steps, so that the operation is more standard.

Further, the inter-groove preparation area comprises a joint surface inter-groove preparation area, a cutting end inter-groove preparation area and an axial surface inter-groove preparation area.

Further, the adjacent surface preparation area corresponds to an area, which needs to be ground off, of an adjacent surface in tooth preparation.

Further, the first adhesive layer and the second adhesive layer are both made of repeated adhesive, including double-sided adhesive tape. Preferably, a groove is arranged at the contact part of each preparation module and used for accommodating and pasting double-sided adhesive tape, so that each preparation module is better attached. When the double-sided adhesive tape is used for multiple times, the old double-sided adhesive tape can be torn off independently, and a new adhesive layer can be replaced, so that the recycling of the teaching aid is realized.

Further, one or more of the brand, model, material, sensitivity to peeling force of the first adhesive layer and the second adhesive layer are different, and further have different adhesive strengths. In addition, the surface of the preparation area provided with the bonding layer can be treated, for example, the non-guiding groove area has higher surface roughness relative to the guiding groove area, so that the bonding strength of the second bonding layer in the fixing area is improved, the first bonding layer is easier to separate from other parts relative to the second bonding layer, and the guiding groove area is preferentially and quickly removed.

Further, the lower surface of the finishing area, the upper surface of the fixing area and the lower surface of the repairing area are provided with magnetic attraction pieces for magnetic attraction. The finishing area and the fixing area and the repairing area and the fixing area can be connected in a magnetic attraction mode. The connection strength between the magnetic attraction piece and the fixed area is higher than the bonding strength of the second bonding layer.

Further, the color of the guide channel region may be different from any non-guide channel region. The thickness (i.e., preparation depth) of the pilot trench region and the non-pilot trench region may be varied according to the requirements of different dental preparation experiments.

Further, the non-guiding groove region further comprises a functional tip inclined plane region, wherein the functional tip inclined plane region is arranged in the whole crown of the rear tooth, the rear tooth inlay and the rear tooth close facing model and is positioned between the interaxial groove preparation region and the interaxial guiding groove region and the finishing region, and corresponds to the cheek inclined plane of the cheek tip of the lower jaw rear tooth and the jaw inclined plane of the jaw cheek tip of the upper jaw rear tooth to be ground in tooth preparation. In combination with practical clinical practice, the application has the advantages that in the dental preparation process, an stomatology professional prepares the guide groove and the non-guide groove area according to the conventional process, the preparation of the functional sharp inclined plane is often ignored, and the sharp line angle cannot be properly eliminated. Insufficient preparation of the functional tip slope may lead to reduced retention and resistance, and at the same time, poor restoration of the shape of the prosthetic surface or insufficient thickness of the functional tip region may affect the biting function or lead to damage or even failure of the prosthetic. The good functional tip inclined surface preparation can provide enough repair space for the prosthesis, is convenient for technical manufacturing of the good prosthesis, improves the quality of the prosthesis, reduces the manufacturing time and promotes the long-term stability and long-term success rate of the repair effect. Therefore, the functional tip inclined plane is independently partitioned, so that students can well master the tooth preparation method and operation key points of the functional tip inclined plane in the learning stage, and the preparation position and the preparation amount are concerned, so that a foundation is firmly built for subsequent clinical work.

Further, the finishing area is positioned below the guide groove area, the inter-groove preparation area, the adjacent surface preparation area and the functional tip inclined surface area, is positioned above the fixing area and surrounds the fixing area, and corresponds to an area needing finishing and polishing in tooth preparation. The upper surface of the finishing area is connected with the guide groove area, the inter-groove preparation area, the adjacent surface preparation area and the functional tip inclined surface area in an adhesive mode, and the lower surface of the finishing area is provided with a magnetic attraction piece used for carrying out magnetic attraction connection with the fixed area. Dressing polishing of the preparation is only required at the final stage of the dental preparation process according to clinical standards, but specific sites and operational details of the dressing polishing are not informed. In the dental model provided by the invention, the finishing area is purposefully arranged, so that students can understand which places can have sharp line angles after preliminary preparation is finished, and what method should be used for grinding the sharp line angles, and the preparation becomes blunt. Can help students to intuitively understand the related operation of the finish in the dental preparation and the effect after the finish, and plays an important guiding role in the follow-up actual operation.

Further, the sequentially detachable dental preparation teaching appliance further comprises a repair area, the repair area is independent of the dental model, corresponds to a dental to be worn after dental preparation, and is combined with the fixing area in a detachable mode.

In the invention, the setting of the repair area not only can promote the teaching effect, but also has better guiding significance for simulating clinical practice. In dental preparation teaching, students need to not only learn how to perform dental preparation operations, but also understand the relationship between the prepared dental and the final restoration. By arranging the prosthesis corresponding to the appearance of the prepared tooth body, students can visually see whether the prepared result meets the requirements or not, and the students can understand the influence of different preparation modes on the installation and final effect of the prosthesis. Further, the repair area is designed with different shapes and thicknesses according to different repair body types, and a magnetic attraction piece is arranged at the contact part of the repair area and the fixed area, so that the attachment or detachment between the repair area and the fixed area is realized.

The present invention further divides the detachable zone into a guide channel zone and a non-guide channel zone. Any of the above areas may not be completely removed, which may cause the prepared tooth shape to be inconsistent with the standard, and further, the repair area may not be perfectly attached to the fixing area. Through setting up of restoration district, can promote the student to think about own operation, deepen the understanding of correct preparation method. Further, in a practical clinical setting, the ultimate goal of dental preparation is to restore the function and aesthetics of the teeth in order to install the appropriate restorations. The prosthesis is arranged in the teaching model, a series of complete clinical processes including try-on and bonding can be simulated, students can adapt to the whole process from tooth preparation to prosthesis installation in advance, and the clinical thinking and operation continuity of the students are cultivated. This helps students adapt to actual work faster, reducing the gap between theory and practice. Wherein, the repair area can simulate the material and structure of a real prosthesis, and different types of prostheses can be manufactured. For example, in the whole crown of the rear teeth, the shape and the color of the whole porcelain prosthesis and the porcelain prosthesis can be simulated, different prosthesis models can be produced, and students can intuitively know the characteristics of different prostheses.

Further, the sequentially detachable dental preparation teaching article further comprises a plurality of needle models, and the shape parts of the needle models are identical or different from each other and are respectively matched with the shape of each preparation module.

The teaching appliance provided by the invention is provided with a plurality of car needle models which can be accurately matched with different non-guide ditch areas and guide ditch areas. In an actual teaching scene, a teacher can hold the car needle model by hand and directly conduct the planning demonstration on the removed corresponding part. In this intuitive way, the teacher can show the student deep and careful about the specific locations of the teeth when the teeth are ready to be worn out of the corresponding locations, and the ready depth that each location needs to reach. Through the teaching appliance provided by the invention, students can clearly know which position the needle should be positioned at and which angle or depth should be kept in the operation process, how the tooth body presents after finishing one-step grinding, how sharp line angles are eliminated in the tooth body preparation process, and how the functional tip inclined plane is prepared by how the steps and the techniques are adopted.

In clinical practice, the types of needles used for dental preparation are various and the types are different. It is often difficult for an stomatology professional to accurately identify the type of various types of needles and grasp the specific operation method thereof at the initial stage of learning dental preparation. The teaching appliance designed by the invention comprises a tooth model and a car needle model. In the early stage of teaching and training, a teacher can develop teaching demonstration from multiple aspects by using a teaching aid highly related to the shape of the vehicle needle and providing a corresponding vehicle needle model, on one hand, the teacher can clearly show the prepared position and depth in the step to students by disassembling a corresponding preparation module, and on the other hand, the teacher can hold the vehicle needle model and perform visual planning demonstration on the disassembled corresponding part. By means of the visual and image teaching mode, students can be familiar with morphological characteristics of different vehicle needles in advance, so that in different preparation steps of subsequent training, proper vehicle needles are quickly and accurately selected, and the preparation operation of the vehicle needles at what positions, angles and depths is determined. The method lays a solid foundation for subsequent training of students, and is helpful for improving learning effect and grasping degree of operation skills.

Further, the dental preparation teaching appliance comprises dental models corresponding to 32 constant teeth of a person, wherein the dental models can be the same as the size and the proportion of real teeth, and can be amplified according to different proportions. Preferably, the dental model is scaled up by 5-20 times of the real teeth, and correspondingly, the restoration area matched with the dental model and the needle model are also scaled up by the same scale.

Further, the optional colors of the detachable zone, the fixed zone and the repair zone comprise purple, blue, red, gray, yellow, green, pink, orange, coffee, and the like. In addition, some non-adjacent areas can also be distinguished by using different colors of different shades, such as dark yellow, light yellow, and the like.

Further, the sequentially detachable dental preparation teaching appliance is used for dental preparation training of the whole crown of the rear teeth, the rear tooth inlay, the rear tooth close face, the whole crown of the front teeth and the front tooth close face.

The second technical scheme adopted for achieving the second purpose of the invention is to provide a use method of the sequentially detachable dental preparation teaching appliance, which comprises the following steps:

s1, explaining a basic method of tooth preparation and a use method of a needle, dismantling a guide channel region according to a tooth preparation operation specification, and simultaneously displaying the placement position and the preparation depth of the needle when preparing the guide channel by using a corresponding needle model;

S2, removing the non-guide ditch area, and sequentially removing the ditch preparation area, the adjacent surface preparation area, the functional sharp inclined surface area and the finishing area according to the tooth preparation operation specification;

And S3, matching the repair area with the fixed area to demonstrate the fitting process of the clinical prosthesis, and observing the final repair effect.

Compared with the prior art, the invention has the beneficial effects that:

(1) According to the dental preparation teaching appliance provided by the invention, a specific area to be ground in a dental model is set as a detachable area according to a clinical dental preparation standardized operation flow, detachable connection is realized through magnetic attraction with a fixed area below the dental preparation teaching appliance, the detachable area is divided into a guide ditch area and a non-guide ditch area which comprise a plurality of preparation modules, and the non-guide ditch area is further divided into a ditch preparation area, an adjacent surface preparation area, a functional tip inclined surface area and a finishing area. In the actual teaching display process, a teacher uses the dental model provided by the invention to remove the guide channel areas preferentially and rapidly according to the sequence of dental preparation teaching, and then remove all areas of the non-guide channel areas sequentially, so that the display and teaching of the dental preparation sequence can be completed rapidly and efficiently.

(2) According to the sequentially detachable dental preparation teaching article provided by the invention, the adhesive layers with different adhesive strengths are arranged between the parts in the non-guide groove region and between the guide groove region and the non-guide groove region, so that a teacher can be helped to remove the guide groove region preferentially and rapidly according to the sequence of dental preparation teaching in the actual teaching display process, and then remove the regions in the non-guide groove region sequentially, thereby efficiently completing the display and teaching of the dental preparation sequence. Simultaneously, can also help the dentistry professional to use this teaching article from before tooth preparation training and accurately master preparation order, preparation volume and final preparation effect, possess repeatedly demonstrate, recycle moreover, reduce teaching cost, improve advantages such as teaching efficiency.

(3) The invention provides a sequentially detachable dental preparation teaching article, which is a personalized teaching aid capable of closely attaching diversified teaching methods and emphasizes the method specificity and the operation step sequence in the dental preparation process. Through the teaching appliance provided by the invention, students can understand the core key points of tooth preparation more clearly and deeply, so that the teaching effect and the learning quality are greatly improved. Meanwhile, the design thought and the use method of the invention can be suitable for various dental preparation types (such as rear teeth full crowns, front teeth veneers and the like), help students to improve accurate preparation skills, and know dental preparation amounts required by different restoration types.

(4) The invention provides a sequentially detachable dental preparation teaching appliance, which provides different types of prosthesis models according to teaching requirements. By simulating multiple types of prostheses, students can adapt in advance to the whole process from dental preparation to prosthesis installation, and develop their clinical thinking and operational consistency. This helps students adapt to actual work faster, reducing the gap between theory and practice.

(5) According to the sequentially detachable dental preparation teaching appliance, the plurality of car needle models are arranged according to the standardized process of clinical dental preparation, and the car needle models can be accurately matched with different guide ditch areas and non-guide ditch areas. The design is helpful for teachers to deeply and carefully show specific positions and angles of the vehicle needles when the teeth are prepared to grind corresponding parts to students and the preparation depth required to be achieved at each position, is also helpful for students to be familiar with morphological characteristics of different vehicle needles, can quickly and accurately select proper vehicle needles during subsequent training, and can clearly determine the positions, angles and depths of the vehicle needles to perform preparation operation.

Drawings

Fig. 1 is a schematic structural view of a mandibular first molar full crown dental model in a sequential detachable dental preparation teaching appliance according to embodiment 1 of the present invention, wherein fig. 1A is a schematic front side view, and fig. 1B is a schematic top view;

FIG. 2 is a cross-sectional view of FIG. 1A, wherein FIG. 2A is a schematic view of a buccal side longitudinal cross-section and FIG. 2B is a schematic view of a mesial-distal longitudinal cross-section;

Fig. 3 is a schematic view of a dental model of a mandibular first molar full crown dental model in a sequential detachable dental preparation teaching appliance according to embodiment 1 of the present invention;

Fig. 4 is a schematic structural view of a facing dental model of a maxillary central incisor abutment in a sequential detachable dental preparation teaching appliance according to embodiment 2 of the present invention, wherein fig. 4A is a schematic front side view, and fig. 4B is a schematic front side view;

FIG. 5 is a schematic view of the mesial-distal longitudinal cross-section of FIG. 4A;

In the drawings, a 1-detachable area, a 11-guiding groove area, a 12-non-guiding groove area, a 111-occipital groove area guiding groove, a 112-cutting end guiding groove, a 113-occipital ridge area guiding groove, a 114-axial guiding groove, a 121-inter-groove preparation area, a 1211-inter-occipital groove preparation area, a 1212-cutting end inter-groove preparation area, a 1213-axial inter-groove preparation area, a 122-adjacent surface preparation area, a 123-functional tip inclined surface area, a 124-finishing area, a 2-fixing area, a 3-repairing area and a 4-vehicle needle model.

Detailed Description

The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

The invention will be further illustrated, but is not limited, by the following examples. The tooth models adopted in the teaching appliance of the embodiments of the invention are models which are amplified 10 times of natural human teeth, and the thickness of each preparation area corresponds to the preparation depth.

Example 1

The embodiment provides a detachable dental preparation teaching appliance in sequence, which comprises a plurality of dental models, wherein each dental model consists of a detachable area 1, a fixed area 2 and a repairing area 3, as shown in fig. 1 and 2. The detachable area 1 is shown in fig. 1, and the detachable area 1 is formed by a plurality of independent detachable preparation modules with different colors, wherein the preparation modules comprise a guide channel area 11 and a non-guide channel area 12.

As shown in fig. 1 and 2, the full crown preparation teaching appliance for mandibular first molar is shown in schematic view (belonging to the full crown preparation teaching appliance for posterior teeth), wherein the guide groove 111 for the occipital region and the guide groove 113 for the occipital region are green with different brightness and 15mm in thickness, the preparation area 1211 for the occipital region is blue with 15mm in thickness, the guide groove 114 for the axillary region is red with 10mm in thickness, the preparation area 1213 for the axillary region is pink with 10mm in thickness, the preparation area 122 for the adjacent surface is gray with 10mm in thickness, the functional tip inclined surface area 123 is coffee with 10mm in thickness, the finishing area 124 is dark yellow with 5mm in thickness, wherein a first adhesive layer is arranged between the guide groove 111 for the occipital region, the guide groove 113 for the occipital tip region and the finishing area 124, the preparation area 1213 for the axillary region, the preparation area 122 for the adjacent surface and the functional tip inclined surface area 123 are provided with a second adhesive layer, and the second adhesive layer is arranged between the preparation area 121 for the axillary region and the finishing area 124, and the second adhesive layer can be repeatedly adhered to the first adhesive layer and the second adhesive layer with high strength. A magnetic attraction piece is arranged between the finishing area 124 and the fixed area 2, and the finishing area can be attached and detached in a magnetic attraction mode. The fixing area 2 is light yellow, the repairing area 3 is white, and a magnetic attraction piece is arranged between the repairing area 3 and the fixing area 2 and can be attached and detached in a magnetic attraction mode.

In this embodiment, the teaching article is used as follows:

1. The teacher dismantles in the dental preparation experiment class according to the sequence of occlusal surface-axial surface-adjacent surface-functional sharp inclined surface-finishing. When the joint surface is dismounted, the joint surface fossa groove region guide groove 111 and the joint surface dental ridge region guide groove 113 are dismounted preferentially, the joint surface inter-groove preparation region 121 is dismounted, the matched needle model 4 can be used for being placed on the joint surface when the joint surface guide groove is dismounted, the position and the angle where the needle should be placed are shown, when the shaft surface is dismounted, the shaft surface guide groove 114 is dismounted preferentially, the shaft surface inter-groove preparation region 1213 is dismounted, the adjacent surface preparation region 122 is dismounted, the functional sharp inclined surface region 123 is dismounted, and the finishing region 124 is dismounted finally. The standardized process and the preparation effect of tooth preparation are displayed through the steps, students are helped to master and memorize the standard preparation sequence through different colors among the preparation modules, and the position angle and the preparation depth of the needle can be explained by matching the needle model 4 in each step when the tooth surface is prepared. After the tooth preparation is completed, the teacher displays the type and the form of the restoration body by the restoration area 3 alone, and finally displays the final restoration effect to the student by attaching the restoration area 3 to the fixed area 2, as shown in fig. 3. In the teaching process, aiming at the serious difficulty of tooth preparation, a teacher can repeatedly detach and paste one or more preparation modules, so that students can grasp and understand related contents more clearly.

2. After the teacher finishes explanation and display, the restoration area 3 and the fixing area 2 of the dental model of the teaching appliance are split, and the detached preparation modules are sequentially adhered above the fixing area 2 to restore the dental model. After the teaching of a teacher, students can detach the corresponding preparation modules to know the standard tooth preparation amount and step according to the step displayed by the teacher, and master each step and the final preparation effect. Students can also know the shape and the size of the whole crown of the rear teeth by using the repair area, and intuitively know the final repair effect of the whole crown of the rear teeth through the fit between the fixing area and the repair area.

Example 2

This embodiment is similar to embodiment 1 except that this embodiment is a veneering preparation teaching appliance (belonging to an anterior veneering preparation teaching appliance) for maxillary central incisors, as shown in fig. 4 and 5. The cutting end guide groove 112 is pink and has a thickness of 10mm, the cutting end groove preparation area 1212 is red and has a thickness of 10mm, the axial surface guide groove 114 is light green, the cutting end groove preparation area 1212 and the axial surface groove preparation area 1213 are dark green, the cutting end groove preparation area 1213 and the axial surface groove preparation area 1213 are 9mm and 7mm, the neck 1/3 is 5mm, the finishing area 124 is dark yellow and has a thickness of 3mm, a first adhesive layer is arranged between the cutting end guide groove 112 and the axial surface guide groove 114 and the finishing area 124, a second adhesive layer is arranged between the cutting end groove preparation area 1212 and the axial surface groove preparation area 1213 and the finishing area 124, the first adhesive layer and the second adhesive layer are double-sided adhesive capable of being repeatedly adhered and detached, and the adhesive strength of the second adhesive layer is higher than that of the first adhesive layer. The fixed zone 2 is pale yellow, and the repair zone 3 is white. The magnetic attraction piece is arranged between the finishing area 124 and the fixed area 2, and can be attached and detached in a magnetic attraction mode, and the magnetic attraction piece is arranged between the repairing area 3 and the fixed area 2, and can be attached and detached in a magnetic attraction mode.

In the invention, the teaching appliance comprises the following steps:

1. The teacher is in the dental preparation experimental class, and the teacher performs the display in the steps of cutting end, axial surface and finishing. The cutting end guide groove 112 is removed firstly at the cutting end part, then the preparation area 1212 between the cutting end grooves is removed, the axial guide groove 114 is removed firstly at the axial surface part, then the preparation area 1213 between the axial grooves is removed, after the axial guide groove is removed, the corresponding needle model 4 can be placed on the axial surface, the placement angle and the position of the needle in preparation of the surface are observed, and finally the finishing area 124 is removed. The standardized process and the preparation effect of tooth preparation are displayed through the steps, and meanwhile, students are helped to master and memorize the standard preparation sequence through different colors among the preparation modules. After the tooth preparation is completed, a teacher independently displays the type and the form of the restoration body explained by the restoration area, and finally displays the final restoration effect to students by attaching the restoration area 3 to the fixed area 2. In the teaching process, aiming at the serious difficulty of tooth preparation, a teacher can repeatedly detach and paste one or more preparation modules, so that students can grasp and understand related contents more clearly.

2. After the teacher finishes explanation and display, the restoration area 3 and the fixing area 2 of the dental model of the teaching appliance are split, and the detached preparation modules are sequentially adhered above the fixing area 2 to restore the dental model. After the teaching of a teacher, students can detach the corresponding preparation modules to know the standard tooth preparation amount and step according to the step displayed by the teacher, and master each step and the final preparation effect. Students can also know the shape and the size of the rear dental abutment surface by using the repair area, and the final repair effect of the rear dental abutment surface is intuitively known through the lamination of the fixing area and the repair area.

The foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the embodiments and scope of the present invention, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the teachings of the present invention, which are intended to be included within the scope of the present invention.

Claims (10)

1. The tooth preparation teaching appliance is characterized by comprising a plurality of tooth models, wherein each tooth model comprises a detachable area (1) and a fixed area (2) below the detachable area;

The detachable area (1) corresponds to a specific area which needs to be ground in tooth preparation, and the fixed area (2) corresponds to a prepared tooth after tooth preparation;

The detachable zone (1) comprises a guide ditch zone (11) and a non-guide ditch zone (12), wherein the guide ditch zone (11) and the non-guide ditch zone (12) comprise a plurality of independent detachable preparation modules;

a first bonding layer is arranged between the guide groove region (11) and the non-guide groove region (12), a second bonding layer is arranged between the preparation modules in the non-guide groove region (12), and the bonding strength of the second bonding layer is higher than that of the first bonding layer.

2. The dental preparation teaching appliance according to claim 1, characterized in that the guide channel region (11) comprises a occlusal fossa channel region guide channel (111), a incisal end guide channel (112), an occlusal cusp ridge region guide channel (113) and an aximal guide channel (114).

3. The dental preparation teaching appliance according to claim 2, characterized in that the non-guiding trench area (12) comprises an inter-trench preparation area (121), an adjacent surface preparation area (122), a functional tip inclined area (123) and a finishing area (124), and each adjacent preparation module in the non-guiding trench area (12) is connected by means of adhesion.

4. A dental preparation teaching article according to claim 3 and characterized in that said inter-sulcus preparation zone (121) comprises a occlusal inter-sulcus preparation zone (1211), a tangential inter-sulcus preparation zone (1212) and an axial inter-sulcus preparation zone (1213).

5. The sequentially removable dental preparation teaching appliance according to claim 4, wherein the functional cusp slope area (123) is disposed in the posterior full crown, posterior inlay and posterior occlusal model between the interaxial sulcus preparation area (1213) and the interaxial guide sulcus area (114) and the finishing area (124) and corresponds to a cheek slope of a cheek tip of a posterior mandibular tooth and a palate slope of a palate tip of an anterior maxillary posterior tooth to be ground in dental preparation.

6. The dental preparation teaching appliance according to claim 3, wherein 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 inclined surface area (123), is located above the fixed area (2) and surrounds the fixed area (2), corresponds to an area to be finished and polished in dental preparation, the upper surface of the finishing area (124) is connected with the guide groove area (11), the inter-groove preparation area (121), the adjacent surface preparation area (122) and the functional tip inclined surface area (123) in an adhesive mode, a magnetic piece for carrying out magnetic connection with the fixed area (2) is arranged on the lower surface of the finishing area (124), and the connection strength between the magnetic piece and the fixed area (2) is higher than the adhesive strength of the second adhesive layer.

7. The sequentially detachable dental preparation teaching appliance according to claim 1, further comprising a restoration area (3), wherein the restoration area (3) is arranged independent of the dental model, corresponds to a restoration to be worn after dental preparation, and the restoration area (3) is combined with the fixing area (2) in a magnetic connection mode.

8. The sequential detachable dental preparation teaching appliance according to claim 1, further comprising a plurality of car needle models (4), the shape of the plurality of car needle models (4) being partially identical or different from each other and being respectively matched to the shape of each preparation module.

9. The in-order removable dental preparation teaching appliance of claim 1, wherein the in-order removable dental preparation teaching appliance is used for one or more of dental preparation training of a posterior full crown, a posterior inlay, a posterior occlusal surface, an anterior full crown, an anterior veneering.

10. A method of using a sequential removable dental preparation teaching appliance according to any of claims 1-9, comprising the steps of:

S1, explaining a basic method of tooth preparation and a use method of a needle, dismantling a guide channel region (11) according to a tooth preparation operation specification, and simultaneously displaying the placement position and the preparation depth of the needle when preparing the guide channel by using a corresponding needle model (4);

s2, removing the non-guide ditch area (12), and sequentially removing the ditch preparation area (121), the adjacent surface preparation area (122), the functional sharp inclined surface area (123) and the finishing area (124) according to the dental preparation operation specification, wherein the placement position and the preparation depth of a needle during preparation are shown by matching with the corresponding needle model (4) while removing;

And S3, matching the repair area (3) with the fixed area (2) to demonstrate the fitting process of the clinical prosthesis, and observing the final repair effect.