A root canal treatment teaching model for locating the apical insertion point

Abstract

This invention discloses a root canal treatment teaching mold for locating the apical stop. By setting a conductive medium channel filled with a conductive medium within the mold body, and providing a guide hole, when the conductive electrode of a root canal length measuring instrument is inserted through the guide hole and contacts the conductive medium, an electrical connection is established between the root canal file and the conductive electrode within the conductive medium, thereby achieving electrical positioning of the apical stop. This mold effectively simulates the operational path of root canal length measurement in a real root canal treatment process, improving positioning accuracy and avoiding issues such as leakage, evaporation, measurement instability, and the need for additional custom-made models for each teaching operation caused by liquid conductive medium. Simultaneously, it improves adaptability to tooth modules of different sizes, meeting the training objectives for various types of teeth in laboratory and clinical teaching. Furthermore, it can be fixed to a prosthetic head model to realistically simulate clinical patient scenarios for apical stop positioning and to provide simulation training throughout the entire root canal treatment process.

Description

Technical Field

[0001] This utility model relates to the field of teaching mold technology, and in particular to a root canal treatment teaching mold for locating the apical insertion point. Background Technology

[0002] In endodontic treatment, root canal treatment is a fundamental and crucial clinical procedure, and the accurate location of the apical stop is of decisive significance for the treatment outcome. The apical stop refers to the physiological endpoint that should be reached during root canal preparation and filling, and its determination mainly relies on the measurement results of a root canal length measuring instrument.

[0003] In related technologies, the following problems are commonly found in oral medicine teaching: a lack of teaching equipment that can be applied to realistic simulations of apical insertion scenarios using prosthetic head models; students struggling to grasp the correspondence between "root canal file insertion depth" and "electrical signal response" without clinical conditions; most teaching molds only have tooth structure simulation functions and cannot achieve interactive feedback between root canal file insertion and conductive electrode closed-loop, resulting in a lack of systematic training for students on the working principle of root canal length measuring instruments, loop formation mechanisms, and root canal file depth judgment (leading to poor teaching effectiveness); while some improved molds have electrodes in the alveolar structure, they generally suffer from complex structures, poor simulation, instability, difficulty in replacement and maintenance, poor adaptability to different sized tooth modules, and the need to set up a large number of positioning electrodes. Furthermore, the conductive pathway is separated from the root canal structure, making it impossible to intuitively represent the clinical root canal file path.

[0004] Therefore, the relevant technologies need to be improved. Utility Model Content

[0005] The main purpose of this invention is to provide a root canal treatment teaching mold for locating the apical insertion point, so as to at least solve the technical problems of poor teaching performance of teaching molds in oral education in related technologies.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a root canal treatment teaching mold for locating the apical insertion point, the root canal treatment teaching mold comprising:

[0008] The oral cavity mold body has multiple tooth sockets on it;

[0009] Multiple tooth modules are detachably installed in the alveolar socket;

[0010] A conductive medium channel is located within the oral cavity mold body and is filled with a conductive medium;

[0011] A guide hole is provided on the oral cavity mold body and is used to guide the conductive electrode of the root canal length measuring instrument to be inserted in a preset direction so as to contact the conductive medium in the conductive medium channel;

[0012] Specifically, when the conductive electrode of the root canal length measuring instrument is inserted through the guide hole and comes into contact with the conductive medium surrounding the root canal file, an electrical connection is established between the root canal file and the conductive electrode, thereby realizing a simulated apical termination electrical measurement and positioning operation.

[0013] Optionally, the root canal treatment teaching mold further includes a cover plate structure; the cover plate structure is located at the bottom of the oral mold body and covers the conductive medium channel, for sealing the conductive medium.

[0014] Optionally, the root canal treatment teaching mold further includes a first auxiliary fixation module fixed to the oral mold body; the plurality of tooth modules include a plurality of first tooth modules and a plurality of second tooth modules of different sizes; the first auxiliary fixation module has a first through hole, which is used to cooperate with a fastener to fix the first tooth module.

[0015] Optionally, the root canal treatment teaching mold further includes a second auxiliary fixation module that can be detachably installed on the oral mold body; the second auxiliary fixation module has a second through hole, which is used to cooperate with a fastener to fix the second tooth module.

[0016] Optionally, the oral cavity mold body also forms a guide mounting groove; the guide mounting groove is used to install the second auxiliary fixation module so that the inner side of the second auxiliary fixation module wraps around the second tooth module.

[0017] Optionally, the inner side of the second auxiliary fixing module forms an enclosing cavity corresponding to the second dental module; the second through hole extends from the outer side of the second auxiliary fixing module into the enclosing cavity and is used to cooperate with a fastener to fix the second dental module.

[0018] Optionally, the guide hole communicates with the conductive medium channel.

[0019] Optionally, the cover plate structure is an arc-shaped plate, which is fixed to the bottom of the oral cavity mold body in a detachable manner.

[0020] Optionally, the bottom area of ​​the oral cavity mold body is further provided with a metal insert structure; the metal insert structure is used to connect with the simulated head mold.

[0021] Optionally, the conductive medium includes a conductive gel.

[0022] This utility model discloses a root canal treatment teaching mold for locating the apical stop. It features a conductive medium channel filled with a conductive medium within the mold body, and a guide hole for inserting a conductive electrode of a root canal length measuring instrument. When the conductive electrode of the root canal length measuring instrument is inserted through the guide hole and contacts the conductive medium in the conductive medium channel, an electrical connection is established between the root canal file and the conductive electrode within the conductive medium, thereby achieving electrical positioning of the apical stop. This design effectively simulates the actual root canal length measurement operation path, improving positioning accuracy and avoiding problems such as leakage of liquid conductive medium, unstable measurement due to evaporation, and the need for additional customized models for each teaching operation. It improves the electrical connection stability and repeatability of the teaching simulation environment, enhancing the controllability and reliability of the teaching process. Furthermore, this application improves the adaptability to different sized dental modules, simplifies the difficulty of repeatedly installing and disassembling dental modules during teaching, and meets the training objectives for various types of teeth in laboratory and clinical teaching. In addition, this application can be fixed with a simulated head model, thereby enabling simulation training of root canal length measurement, apex localization, and the entire root canal treatment process in dental endodontics courses on the simulated head model, improving the authenticity of teaching and the accuracy of practice. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A three-dimensional schematic diagram of the root canal treatment teaching model provided in the embodiment of this application from a frontal view.

[0025] Figure 2 A three-dimensional schematic diagram of the root canal treatment teaching model provided in the embodiment of this application from a bottom view angle;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure after the cover plate structure has been removed;

[0027] Figure 4 A schematic diagram of the structure of the root canal treatment teaching mold provided in this embodiment of the application after the second auxiliary fixation module has been removed;

[0028] Figure 5 This is a three-dimensional schematic diagram of the second auxiliary fixing module in an embodiment of this application;

[0029] Figure 6 This is a three-dimensional schematic diagram of the second auxiliary fixing module in an embodiment of this application;

[0030] Figure 7 This is a three-dimensional schematic diagram of a cover plate structure in an embodiment of this application.

[0031] Reference numerals: 1. Root canal treatment teaching mold; 10. Oral mold body; 20. Tooth module; 30. Guide hole; 40. Cover plate structure; 50. Metal insert structure; 60. Second auxiliary fixation module; 70. Alveolar position; 101. Mounting groove; 102. Conductive medium channel; 104. Alveolar position bottom; 105. Second through hole; 601. Enclosing cavity; 602. Cover plate mounting hole; 401. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0033] It should be noted that related terms such as "first" and "second" can be used to describe various components, but these terms do not limit the component. These terms are only used to distinguish one component from another. For example, without departing from the scope of this utility model, the first component can be referred to as the second component, and the second component can similarly be referred to as the first component. The term "and / or" refers to any one or more combinations of related and descriptive terms.

[0034] Please refer to them in order. Figures 1 to 3 This application provides a root canal treatment teaching mold 1 for locating the apical insertion point, which includes at least an oral mold body 10, multiple tooth modules 20, a conductive medium channel 104 and a guide hole 30. The components are described below.

[0035] The oral cavity mold body 10 can be a single injection-molded or 3D-printed plastic structure, or it can be made of resin or composite materials with certain strength and machinability. It has multiple alveolar positions 101 for mounting corresponding tooth modules 20. The alveolar positions 101 are recessed structures, and the dimensions of the alveolar positions 101 at different locations can be different; that is, some alveolar positions 101 are larger, and some are smaller, thus adapting to tooth modules of different sizes (e.g., standard-sized 3D-printed teeth, larger or smaller extracted teeth, etc.). Furthermore, the multiple alveolar positions 101 can be arranged according to the oral anatomy layout, such as following the natural order of the upper and lower jaws, to facilitate trainees' identification and training of root canal treatment pathways for different tooth positions. This improves the adaptability to tooth modules of different sizes, simplifies the difficulty of repeatedly installing and removing tooth modules during teaching, and meets the training objectives for various types of teeth in laboratory and clinical teaching.

[0036] Multiple tooth modules 20 can be tooth models made of transparent resin, dentin-like plastic, or machinable composite materials. The material should possess sufficient mechanical strength and drillability to accommodate the insertion of root canal files for simulated root canals. Alternatively, they can be processed extracted teeth. By providing structural holes in the alveolar cavity 101 to mate with the extracted tooth root, and combining these with screw holes and corresponding fasteners (such as bolts and screws) for bidirectional retention, stable installation and rapid replacement of the extracted tooth can be achieved within the allowable range of root size variation. Each tooth module 20 is generally an independent modular structure, detachably installed in the alveolar cavity 101, and can be quickly replaced through snap-fit, sliding fit, or magnetic attraction. The module surface can be made to resemble different types of teeth, such as anterior teeth, premolars, or molars, mimicking the shape of clinical teeth to facilitate student identification of tooth positions and individual root canal manipulation training. Each tooth module 20 can form a perforated area in its crown. Users can create a through channel inside the tooth module by drilling according to teaching needs, and insert root canal files (such as metal sleeves) to simulate the clinical root canal structure, path and root canal file insertion depth control.

[0037] The conductive medium channel 104 can be a through channel located at the bottom of the oral cavity mold body 10. Its shape can be straight, curved, or arc-shaped, and its cross-section can be circular, elliptical, or rectangular. Preferably, it has a structure that facilitates uniform filling of the conductive medium. The conductive medium channel 104 is filled with a conductive medium, such as gel-like saline conductive adhesive, conductive paste, or a flexible conductive material containing carbon-based materials. This primarily provides a stable electrical conduction path for the root canal file (not shown in the figure) and the conductive electrode of the root canal length measuring instrument (not shown in the figure, which can be a strip-shaped conductive device) within the oral cavity mold body 10. The filling height of the conductive medium is approximately flush with the preset apical termination position (which can be the bottom of the alveolar bone 105).

[0038] The guide hole 30 is provided on the oral cavity mold body 10. One end of the guide hole 30 is connected to the outside of the oral cavity mold body 10, and the other end extends to the conductive medium channel (i.e., the guide hole 30 is connected to the conductive medium channel 104). It is used to guide the conductive electrode of the root canal length measuring instrument to be inserted along the preset insertion path and to ensure that the conductive electrode accurately contacts the conductive medium in the conductive medium channel 104.

[0039] When using the root canal treatment teaching model 1, the trainee inserts the conductive electrode (not shown in the figure) of the root canal length measuring instrument through the guide hole 30 and contacts the conductive medium in the conductive medium channel 104. At the same time, the trainee inserts the root canal file (not shown in the figure) through the pre-drilled area on the tooth module 20, so that the root canal file reaches the preset apical stop position and contacts the conductive medium in the conductive medium channel 104. An electrical connection is established between the root canal file and the conductive electrode through the conductive medium, forming an electrical connection closed loop. At the same time, the root canal length measuring instrument can issue a "apical stop positioning" prompt signal to realize the simulated apical stop electrical measurement and positioning operation.

[0040] As can be seen, the root canal treatment teaching mold of this application embodiment forms a "positioning electrode-free" teaching mold. By setting a conductive medium channel filled with conductive medium in the oral mold body, and setting a guide hole on it for guiding the insertion of the conductive electrode of the root canal length measuring instrument, when the conductive electrode is inserted through the guide hole and abuts against the conductive medium set around the simulated root canal, the root canal file and the conductive electrode can establish an electrical connection in the conductive medium, thereby realizing the electrical measurement and positioning operation of the apical stop. This design effectively simulates the real root canal length measurement operation path, improves positioning accuracy, avoids problems such as leakage and volatilization of liquid conductive medium, measurement instability, and the need for additional customized models for each teaching operation, improves the electrical connection stability and operation repeatability of the teaching simulation environment, and enhances the controllability and reliability of the teaching process.

[0041] It should be understood that the conductive electrodes of a root canal length measuring instrument are typically strip-shaped or rod-shaped conductive devices. After being inserted into the guide hole and contacting the gel-like superabsorbent polymer conductive medium, they form a closed circuit with the metal root canal file in the simulated root canal. This is a prerequisite for the root canal length measuring instrument to perform "apical stop electrical positioning." When the root canal length measuring instrument is working, it emits a low-frequency microcurrent signal. The conductive electrode, as the signal input, transmits the electrical signal to the conductive medium, which in turn conducts it to the root canal file, enabling the electrical determination of the apical position. When the conductive electrode touches the conductive medium near a specific location (such as the bottom of the alveolar ridge at 105), reaching the simulated apical stop trigger condition, the system issues a "apical stop positioning" prompt, completing the simulation teaching operation.

[0042] In addition, the bottom area of ​​the oral cavity mold body 10 is provided with a metal insert structure 50, which can be a nut or other form of fastener, embedded in the bottom of the oral cavity mold body 10, for fixing with the simulated head model (not shown in the figure) or other teaching support components, so as to carry out root canal length measurement and apex localization training in the dental pulp course on the simulated head model, thereby improving the authenticity of teaching and the accuracy of practice.

[0043] In an optional embodiment of this application, the cover plate structure 40 is located at the bottom of the oral cavity mold body 10 and covers the conductive medium channel 104, serving to seal the conductive medium, prevent leakage, and provide support and positioning for the upper dental module. The cover plate structure 40 can also be made of a transparent material, facilitating observation of the structure and the insertion depth of the guide pin during teaching.

[0044] Please Figures 1 to 3 Based on this, further refer to Figures 4 to 6 The root canal treatment teaching model 1 also includes a first auxiliary fixation module 70 fixed on the oral cavity model body 10; the multiple tooth modules include multiple first tooth modules 201 and multiple second tooth modules 202 of different sizes.

[0045] Specifically, the first auxiliary fixing module 70 has a first through hole, and an internal thread can be formed in the first through hole to cooperate with at least one fastener (e.g., a bolt or screw) to fix the first tooth module 201. That is, the first auxiliary fixing module 70 is used to fix the smaller first tooth module 201 by inserting a bolt or screw into the first through hole and having its tip abut against the surface of the first tooth module 201.

[0046] In an optional embodiment of this application, the root canal treatment teaching mold 1 further includes a second auxiliary fixation module 60 that can be detachably installed on the oral mold body 10.

[0047] Specifically, the second auxiliary fixing module 60 covers the outer side or top of the second dental module 202. Its shape is adapted to the corresponding mating part of the oral cavity mold body, and it can be detachably fixed by means of snap-fit, sliding groove, or fasteners. At the same time, the second auxiliary fixing module 60 has a second through hole 601 formed on it. The second through hole 601 has an internal thread for engaging with fasteners to fix the second dental module 202. That is, the second auxiliary fixing module 60 is used to fix the larger second dental module 202 by inserting at least one bolt or screw into the second through hole 601 and having its tip abut against the surface of the second dental module 202.

[0048] In an optional embodiment of this application, the oral mold body 10 is further provided with an installation groove 102.

[0049] Specifically, the mounting groove 102 is located around or above the tooth groove 101 and is used for detachable installation of the second auxiliary fixing module 60. The outer wall of the second auxiliary fixing module 60 cooperates with the mounting groove 102 and can be stably installed and positioned by means of snap-fit, slot, fastener, etc.

[0050] Meanwhile, in the installed state, the second auxiliary fixing module 60 can wrap around the second tooth module 202 to provide certain support or stabilization so that the second tooth module 202 can be positioned at a specific location on the model body.

[0051] In an optional embodiment of this application, the inner side of the second auxiliary fixing module 60 is formed with an enclosing cavity 602 corresponding to the second tooth module 202.

[0052] Specifically, the surrounding cavity 602 is used to accommodate and define the position of the second tooth module 202, so that it remains stable and does not shift during the teaching operation.

[0053] Please see Figure 7 The cover plate structure 40 is an arc-shaped plate, which is fixed to the bottom of the oral cavity mold body 10 in a detachable manner.

[0054] Specifically, the outline of the arc-shaped plate matches the structure of the conductive medium channel 104 formed at the bottom of the oral cavity mold body 10. The arc-shaped plate is preferably made of a transparent or semi-transparent material, which provides both mechanical strength and facilitates observation of the internal structure during teaching.

[0055] The cover plate structure 40 has a cover plate mounting hole 401 that is detachably fixed to the bottom of the dental mold body 10. This can be achieved through methods such as screw fastening, snap-fit ​​engagement, or magnetic adsorption, allowing for quick installation and removal. It covers the conductive medium channel 104, sealing the conductive medium to prevent leakage or evaporation, and also supports the bottom of the dental module and stabilizes the conductive path during use. The detachable structure of the cover plate also facilitates the replacement of the internal conductive medium, improving the overall lifespan of the device and the convenience of teaching operations.

[0056] In an optional embodiment of this application, the conductive medium channel 104 is disposed through the bottom region of the oral cavity mold body 10 and covers the bottom region (preset apical stop position) corresponding to multiple alveolar positions 101 in terms of occupied space. The channel is arranged in an extended or arc shape, so that the conductive medium filled inside the channel can be continuously distributed in the channel and connected with the conductive path below each alveolar position.

[0057] By arranging the conductive medium channel 104, the conductive medium (conductive gel) in the conductive medium channel 104 can flow to the area below each alveolar position (the preset apical pointing position), thereby ensuring that the preset apical pointing position corresponding to each tooth module is in the established gel conductive environment.

[0058] In an optional embodiment of this application, the second auxiliary fixing module 60 is detachably fixed to the oral cavity mold body 10 by fasteners.

[0059] Specifically, fasteners can be set at the edge or mounting surface of the second auxiliary fixing module 60 and cooperate with the corresponding part of the oral cavity mold body 10.

[0060] It should be noted that fasteners include at least one of screws, bolts, and snap-fit ​​structures. Screws or bolts provide a stable and reliable fixation effect, suitable for training scenarios requiring long-term structural stability; while snap-fit ​​structures facilitate quick installation and disassembly, suitable for teaching applications requiring frequent module replacement. By setting up a detachable fastening structure, not only can different types of guide modules be interchanged, but independent maintenance and cleaning of guide modules or tooth modules are also facilitated, improving the modularity and ease of use of the entire teaching mold system.

[0061] In summary, the root canal treatment teaching mold of this application, by setting a conductive medium channel filled with conductive medium within the oral cavity mold body, and providing a guide hole for guiding the insertion of the conductive electrode of the root canal length measuring instrument, enables the root canal file and the conductive electrode to establish an electrical connection in the conductive medium when the conductive electrode of the root canal length measuring instrument is inserted through the guide hole and contacts the conductive medium in the conductive medium channel, thereby realizing the electrical positioning operation of the apical stop. This design effectively simulates the actual root canal length measurement operation path, improves positioning accuracy, avoids problems such as leakage and evaporation of liquid conductive medium, measurement instability, and the need for additional customized models for each teaching operation, improves the electrical connection stability and operational repeatability of the teaching simulation environment, and enhances the controllability and reliability of the teaching process. At the same time, this application can also improve the adaptability to tooth modules of different sizes and simplify the difficulty of repeatedly installing and disassembling tooth modules during the teaching process. In addition, this application can be fixed with a simulated head model, thereby conducting root canal measurement and apex localization training in endodontic courses on the simulated head model. This achieves the purpose of realistically simulating the clinical patient's apex localization scenario and the entire process of root canal treatment, thereby improving the authenticity of teaching and the accuracy of practice.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementation methods of this application, intended to facilitate a detailed understanding of the technical solutions of this application, but should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. It should be understood that technical solutions obtained by those skilled in the art based on the technical solutions provided in this application through logical analysis, reasoning, or limited experimentation are all within the scope of protection of the claims stated in this application. Therefore, the scope of protection of this patent application should be determined by the content of the appended claims, and the specification and drawings can be used to interpret the content of the claims.

Claims

1. A root canal treatment teaching mold for locating the apical insertion point, characterized in that, The root canal treatment teaching model includes: The oral cavity mold body has multiple tooth sockets on it; Multiple tooth modules are detachably installed in the alveolar socket; A conductive medium channel is located within the oral cavity mold body and is filled with a conductive medium; A guide hole is provided on the oral cavity mold body and is used to guide the conductive electrode of the root canal length measuring instrument to be inserted in a preset direction so as to contact the conductive medium in the conductive medium channel; Specifically, when the conductive electrode of the root canal length measuring instrument is inserted through the guide hole and contacts the conductive medium in the conductive medium channel, an electrical connection is established between the root canal file and the conductive electrode, thereby realizing a simulated apical termination electrical measurement and positioning operation.

2. The root canal treatment teaching mold for locating the apical insertion point as described in claim 1, characterized in that, The root canal treatment teaching mold also includes a cover plate structure; The cover plate structure is located at the bottom of the oral cavity mold body and covers the conductive medium channel, and is used to seal the conductive medium.

3. The root canal treatment teaching mold for locating the apical insertion point as described in claim 1, characterized in that, The root canal treatment teaching mold also includes a first auxiliary fixation module fixed to the oral mold body; the plurality of tooth modules include a plurality of first tooth modules and a plurality of second tooth modules of different sizes; The first auxiliary fixing module has a first through hole, which is used to cooperate with a fastener to fix the first tooth module.

4. The root canal treatment teaching mold for locating the apical insertion point as described in claim 3, characterized in that, The root canal treatment teaching mold also includes a second auxiliary fixation module that can be detachably installed on the oral mold body; The second auxiliary fixing module has a second through hole, which is used to cooperate with a fastener to fix the second tooth module.

5. The root canal treatment teaching mold for locating the apical insertion point as described in claim 4, characterized in that, The oral cavity mold body also has a guide mounting groove; The guide mounting groove is used to install the second auxiliary fixing module so that the inner side of the second auxiliary fixing module wraps around the second tooth module.

6. The root canal treatment teaching mold for locating the apical insertion point as described in claim 5, characterized in that, The inner side of the second auxiliary fixation module has an enclosing cavity corresponding to the second tooth module; The second through hole extends from the outside of the second auxiliary fixing module into the surrounding cavity and is used to cooperate with fasteners to fix the second tooth module.

7. The root canal treatment teaching mold for locating the apical insertion point as described in any one of claims 1 to 6, characterized in that, The guide hole is connected to the conductive medium channel.

8. The root canal treatment teaching mold for locating the apical insertion point as described in claim 2, characterized in that, The cover plate structure is an arc-shaped plate, which is fixed to the bottom of the oral cavity mold body in a detachable manner.

9. The root canal treatment teaching mold for locating the apical insertion point as described in any one of claims 1 to 6, characterized in that, The bottom area of ​​the oral cavity mold body is also provided with a metal insert structure; The metal insert structure is used to connect with the simulated head mold.

10. The root canal treatment teaching mold for locating the apical insertion point as described in any one of claims 1 to 6, characterized in that, The conductive medium includes a conductive gel.

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