Subgingival debridement training model and subgingival debridement training device

Abstract

To provide a subgingival debridement training model and training device that can capture and monitor the movement of an instrument for removing tartar and the like and the surface of the tooth root during training. [Solution] A subgingival debridement training model (1) has an alveolar bone portion (2) and a gingival portion (3) placed thereon, the gingival portion (1) being saddle-shaped with observation windows (3-2) on both sides and a hole on the top surface, the position of the hole being such that when a tooth (4) is implanted in the subgingival debridement training model, the crown portion (4-2) of the tooth protrudes from the hole, the size of the hole being such that when the tooth is implanted, the root portion (4-1) cannot be directly viewed from the crown direction of the tooth, the alveolar bone portion and the gingival portion are detachable, and when a tooth is implanted in the subgingival debridement training model, the root portion of the tooth can be directly viewed through the observation window. The training device includes the training model, and a video capture / display / record / playback device, an image display device, and an image recording / playback device located outside the observation windows.

Description

[Technical Field]

[0001] This invention relates to a training model and training device for learning subgingival debridement techniques. [Background technology]

[0002] Subgingival refers to the area below the gums (tooth root side), which is usually covered by the gums and cannot be seen with the naked eye. As periodontal disease progresses and the periodontal pocket deepens, plaque and tartar tend to accumulate below the gum line. These are difficult to remove by brushing, so they must be removed at a dental clinic. Debridement is a dental treatment procedure that removes plaque, tartar, contaminated cementum, etc. from the periodontal pocket. In particular, in the treatment of periodontal disease, the aim is to calm inflammation and restore the health of the periodontal tissues by removing these contaminants from the root surface of the tooth. Subgingival debridement is an important process in basic periodontal treatment, but it is difficult to master because it involves performing procedures on areas that cannot be directly observed.

[0003] A dental model has been proposed for use in training subgingival debridement techniques, allowing accurate evaluation of the results of training in scaling, root planing, etc. (Patent Document 1). However, this model only uses radiation to detect the degree of removal of tartar, etc., and does not allow direct observation of the tooth roots within the periodontal pockets during training in removing tartar, etc., so the problem of having to remove tartar, etc. by feel, so to speak, remains unresolved.

[0004] Patent Document 2 proposes a periodontal pocket training model. This training model is characterized by a receiving portion at the bottom of the periodontal pocket that receives the tip of a periodontal pocket measurement instrument or tartar removal instrument inserted from the gingival side, and its main purpose is to teach the technique of measuring periodontal pocket depth. It can also be used to learn scaling, which involves removing plaque, deposits, and tartar from supragingival and subgingival tooth surfaces using a tartar removal instrument. However, because the tip of the tartar removal instrument is received in the receiving portion, the user can sense the bottom of the pocket and the tip of the tartar removal instrument will not penetrate deeper than the pocket bottom. However, this model does not visualize the removal of tartar, etc., by the tartar removal instrument.

[0005] The dental training device proposed in Patent Document 3 includes a partially transparent tooth model with a root canal hole, a camera for capturing images of the tooth model from the side, and an image display means for displaying the images captured by the camera, allowing dental training while checking the movement and position of treatment instruments. However, this device is intended for training in root canal treatment, i.e., the removal of infected pulp and bacteria from inside the tooth, and is not intended for training in debridement. Furthermore, the tooth model used is partially transparent and artificial, so extracted human teeth cannot be used.

[0006] In conventional debridement training using models, the technique must be performed without being able to see the root surfaces of the teeth or the instruments used to remove tartar, such as scalers and curettes, making it difficult to master, and there is also the problem of it being difficult to evaluate how much tartar has been removed. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent Publication No. 2007-041083 [Patent Document 2] Patent Publication No. 2007-213002 [Patent Document 3] Patent Publication No. 2012-029755 Summary of the Invention [Problem to be solved by the invention]

[0008] The problem that the present invention aims to solve is to provide a subgingival debridement training model and training device that can capture and monitor the movement of instruments used to remove tartar, such as scalers and curettes, and the surface of the root of the tooth during training, in order to effectively acquire subgingival debridement techniques. [Means for solving the problem]

[0009] After extensive research, the inventors of the present application came up with the idea of ​​constructing a training model consisting of an alveolar bone portion and a gingival portion, implanting the end of the root of a human extracted tooth (hereinafter referred to as the tooth) into the alveolar bone portion, covering it with the gingival portion, and allowing the crown of the tooth to protrude from a hole drilled in the gingival portion in the same way as a real tooth.The gingival portion should be saddle-shaped, and observation windows (hereinafter referred to as the observation windows) should be provided on both sides of it, so that the root of the tooth can be directly seen from outside through the windows.

[0010] The alveolar bone portion is platform-shaped, and a tooth implantation portion for implanting a tooth is provided approximately in the center thereof. Furthermore, a hole is provided in the gum portion directly above the tooth implantation portion, through which the crown of the tooth passes. Thus, when a tooth is implanted in the tooth implantation portion of the alveolar bone portion and covered with the gum portion, the crown of the tooth protrudes from the hole provided in the gum portion. The tooth is implanted in the tooth implantation portion of the alveolar bone portion. The tooth is implanted in the tooth implantation portion of the alveolar bone portion using a dowel pin. The female part of the dowel pin is embedded in the tooth implantation portion, and the male part of the dowel pin is inserted into the root of the tooth. The tooth can be easily implanted in this training model by inserting the leg of the dowel pin inserted in the tooth into the female part of the dowel pin embedded in the tooth implantation portion. In addition to using a dowel pin, other methods for implanting teeth into the alveolar bone include creating a joint using a self-polymerizing resin, adhering this to the tooth root, and then fixing the joint to the alveolar bone with a screw. Because the gingival area is saddle-shaped, there is a space between the upper surface of the alveolar bone and the inner surface of the gingival area. The gap between the side of the tooth protruding from the hole in the gingival area and the gingival area is approximately the width of an actual periodontal pocket. Therefore, during the practical training, just as during actual treatment, the trainee can only see the part of the tooth above the gingival margin, i.e., the crown, and not the part below the gingival margin, i.e., the root. The tooth can be an extracted human molar or an artificial tooth. It is also possible to use any type of tooth, not just molars, such as incisors, canines, or premolars.

[0011] The alveolar bone and gingival parts of this training model are detachable, with the gingival part simply resting on top of the alveolar bone part. Before the training, appropriately selected teeth are implanted into the alveolar bone part, and then the gingival part is placed over the teeth so that the crowns of the teeth pass through the holes in the gingival part, thereby assembling this training model. Alternatively, the gingival part can be placed on the alveolar bone part, and then the teeth can be implanted into the alveolar bone part through the holes in the gingival part.

[0012] In the practical training, acrylic paints that resemble tartar or plaque are applied to the root surfaces of the teeth, and the trainee attempts to remove the acrylic paint from the roots using a scaler or curette. After the practical training is completed, the teeth are extracted, and the degree to which the acrylic paint has been removed from the root surfaces of the teeth can be observed to evaluate the degree to which debridement has been achieved.

[0013] During the training, the training model is placed on a table with the observation windows on both sides of the gingiva facing the trainee, and video capture, display, recording, and playback devices are installed at the front and back ends of the table, facing the observation windows on both sides of the gingiva. A smartphone or other device can be used as the video capture, display, recording, and playback device. This is an example of a subgingival debridement training device according to the present invention. Using this device, the trainee's removal or failed attempts of a scaler or curette, which has been applied to the root of the tooth being trained, are filmed, recorded, displayed, and played back through the above-mentioned windows by the video capture, display, recording, and playback device. After completing the training, trainees can view the video captured and recorded by the video capture, display, recording, and playback device to determine whether they were using the scaler or curette properly, thereby facilitating their acquisition of debridement techniques.

[0014] Furthermore, adding an image display / recording / playback device to the above-mentioned subgingival debridement training device and electrically connecting the above-mentioned video capture / display / recording / playback device to the image display / recording / playback device constitutes another example of a subgingival debridement training device according to the present invention. During training, the instructor can monitor the trainee's removal or failed removal of the scaler or curette, as displayed on the image display device, thereby enabling the instructor to instruct the trainee in the appropriate operation techniques for the scaler or curette in real time. A commercially available general-purpose personal computer can be used as the image display / recording / playback device.

[0015] The subgingival debridement training model according to the first invention has an alveolar bone portion and a gingival portion placed on top of it, and the alveolar bone portion and the gingival portion are detachable. The alveolar bone portion is platform-shaped and has a tooth implantation portion for implanting a tooth in approximately the center of its upper surface. The gingival portion is saddle-shaped and has observation windows on both sides and a hole on its upper surface. The hole is located directly above the tooth implantation portion, and when a tooth is implanted in the tooth implantation portion, the crown of the tooth protrudes from the hole. The hole is of a size such that when the tooth is implanted, the root of the tooth cannot be directly seen from the direction of the crown of the tooth. When a tooth is implanted in the subgingival debridement training model by implanting it in the tooth implantation portion, the root of the tooth can be directly seen through the observation window.

[0016] The subgingival debridement training model of the second invention is the subgingival debridement training model of the first invention, characterized in that the female part of a dowel pin is embedded in the tooth implantation portion.

[0017] The debridement training device of the third invention is characterized by having a subgingival debridement training model of the first or second invention, and having a video capture, display, recording, and playback device outside the two observation windows of the subgingival debridement training model.

[0018] The debridement training device of the fourth invention is the subgingival debridement training device of the third invention, characterized in that it has an image display device and an image recording and playback device electrically connected to the video capture, display, recording and playback device of the subgingival debridement training device. [Effects of the Invention]

[0019] The subgingival debridement training model and training device of this invention can capture and monitor video of the movement of instruments used to remove tartar, such as scalers and curettes, relative to the root surface of the tooth during debridement technique training, thereby enabling effective learning of subgingival debridement techniques. This training model has a very simple structure and can be manufactured at low cost. Furthermore, since the video capture, display, recording, and playback device for this training device can be a general-purpose smartphone or personal computer owned by the user, users can assemble this training device themselves once they have the training model. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 2 is a perspective view of a subgingival debridement training model according to Example 1 with teeth implanted therein. [Figure 2] FIG. 2 is a front view of a subgingival debridement training model according to Example 1. [Figure 3] FIG. 2 is a plan view of a subgingival debridement training model according to Example 1. [Figure 4] FIG. 2 is a plan view of the alveolar bone portion of the subgingival debridement training model according to Example 1. [Figure 5] FIG. 2 is a front view of the subgingival debridement training model according to Example 1 with teeth implanted therein. [Figure 6] 1 is a plan view of a subgingival debridement training model according to Example 1 with teeth implanted therein. FIG. [Figure 7] 1 is a cross-sectional view of a subgingival debridement training model according to Example 1 with teeth implanted in the alveolar bone portion. FIG. [Figure 8] 1 is a schematic diagram of a subgingival debridement training device having a subgingival debridement training model according to Example 1. FIG. [Figure 9] These are photographs of a tooth before and after acrylic paint was applied to the root area. [Figure 10] 1 is a photograph taken from the front of a subgingival debridement training model according to Example 1, in which teeth with acrylic paint applied to the roots have been implanted. [Figure 11] These are photographs of teeth after debridement from the first to fourth sessions when a trainee repeatedly practiced debridement using a subgingival debridement training device. [Figure 12] This photograph shows the cutting edge of a curette becoming dislodged when a trainee was practicing debridement using a subgingival debridement training device. [Figure 13] FIG. 10 is a front view of a subgingival debridement training model according to Example 4 with teeth implanted therein. DETAILED DESCRIPTION OF THE INVENTION

[0021] Next, an embodiment of the present invention will be described, but it goes without saying that various changes and modifications can be made without departing from the technical scope of the present invention. [Example]

[0022] Figure 1 shows a perspective view of a subgingival debridement training model according to Example 1 of the present invention with teeth implanted. The subgingival debridement training model 1 consists of an alveolar bone portion 2 and a gingival portion 3. The alveolar bone portion 2 and the gingival portion 3 are detachable, and the gingival portion is placed on top of the alveolar bone portion 2. A tooth 4 is implanted into the alveolar bone portion, penetrating the gingival portion. The gingival portion 3 is saddle-shaped, and an observation window 3-2 is opened on its side. The crown 4-2 is visible above the gingival portion, and the root 4-1 can be seen through the observation window 3-2. In this example, plaster is used as the material for the alveolar bone portion, but various synthetic resins can be appropriately selected. In this example, silicone is used as the material for the gingiva portion, but flexible materials such as resin and rubber can also be selected. Figure 2 shows a front view of the subgingival debridement training model without teeth implanted. The gingiva portion 3 rests on the alveolar bone portion 2, and observation windows 3-2 are opened on both sides of the gingiva portion. Figure 3 shows a plan view of the subgingival debridement training model without teeth implanted. The gingiva portion 3 rests on the alveolar bone portion 2, and observation windows 3-2 are opened on both sides of the gingiva portion. A hole 3-1 is opened approximately in the center of the upper surface of the gingiva portion. When a tooth is implanted into the alveolar bone portion, the tooth passes through this hole. Figure 4 shows a plan view of the alveolar bone portion. The alveolar bone portion 2 has a tooth implantation portion 2-1 approximately in the center of the upper surface. The female part of the dowel pin 5-2 is embedded in the tooth implantation area. The tooth implantation area 2-1, where the female part of the dowel pin 5-2 is embedded, is coated with a quick-polymerizing resin 2-2 to prevent the plaster from crumbling when using a scaler, etc. The dowel pin used is a TWIN PIN from Cori Dent.

[0023] Figure 5 shows a front view of the subgingival debridement training model 1 with a tooth 4 implanted. The tooth crown (4-2) is visible above the gum area. The tooth root 4-1 is visible through the observation window 3-2. Figure 6 shows a plan view of the subgingival debridement training model 1 with a tooth 4 implanted. Observation windows 3-2 have been opened on both sides of the gum area 3. The crown 4-2 protrudes from a hole 3-1 drilled approximately in the center of the gum area. The crown 4-2 is surrounded by the gum area, so the root cannot be seen from above the training model.

[0024] 7 shows a cross-sectional view of the subgingival debridement training model according to Example 1, in which a tooth 4 has been implanted in the alveolar bone portion 2. The tooth 4 is implanted in the alveolar bone portion 2 by embedding the male part 5-1 of a dowel pin in the root 4-1 of the tooth 4 and inserting the tip of the dowel pin into the female part 5-2 of the dowel pin embedded in the tooth implantation portion 2-1 of the alveolar bone portion 2. [Example]

[0025] FIG. 8 is a schematic diagram of a subgingival debridement training device 6 having a subgingival debridement training model according to Example 1. A subgingival debridement training model 1 according to Example 1 is placed on a training table 7. Video capture, display, recording, and playback devices 8 are installed on both outsides of observation windows provided on both sides of the gingival portion of the training model, with their cameras facing the observation windows. A commercially available smartphone is used as the video capture, display, recording, and playback device. A curette or the like operated by a trainee 11 and the root of the tooth are photographed and recorded by the video capture, display, recording, and playback device 8 through the observation windows, and the trainee can play back and view the captured video after the training.

[0026] An image display / recording / playback device 10 is installed on a desk 9 located a short distance from the training table 7. The image display / recording / playback device, which serves as both an image display device and an image recording / playback device, is a commercially available personal computer. The image display / recording / playback device 10 is electrically connected to the video capture / display / recording / playback device 8. Video data captured by the video capture / display / recording / playback device 8 is transmitted to the image display / recording / playback device 10 in real time, allowing the training instructor to view a video of the trainee's root debridement procedure in real time. This video can also be recorded and played back later. This allows the instructor to provide accurate guidance to the trainee in real time. The trainee and others can later view the video and discuss ways to improve their skills. The image display / recording / playback device and the video capture / display / recording / playback device 8 can be electrically connected via the Internet, Bluetooth (registered trademark), or the like. [Example]

[0027] A debridement practice was conducted using the subgingival debridement practice model according to Example 1. First, the teeth to be used in the subgingival debridement practice were prepared. An extracted human mandibular first molar was used. Acrylic paint was applied to the root surface of the tooth to simulate the tartar and plaque to be removed by debridement. The goal of the debridement practice was to remove this acrylic paint. Figure 9 is a photograph of a tooth before (left photo) and after (right photo) acrylic paint was applied to the root surface. The tooth with acrylic paint applied to the root surface was implanted in a subgingival debridement training model according to Example 1. Figure 10 shows a frontal photograph of a tooth with acrylic paint applied to it implanted in a subgingival debridement training model according to Example 1. The root of the tooth with acrylic paint applied can be directly viewed through the observation window.

[0028] Figure 11 shows photographs of the teeth after debridement from the first to fourth sessions when a trainee repeatedly performed debridement using a subgingival debridement training model with implanted teeth coated with the acrylic paint described above. After each session, the tooth was removed and photographs were taken of the buccal, mesial, lingual, and distal sides. The photographs, from top to bottom, show the teeth after the first, second, third, and fourth sessions. The photographs for each session show the four sides of the tooth after the session: buccal, mesial, lingual, and distal, from left to right. Here, the mesial refers to the side of the tooth closest to the entrance of the mouth, and the distal refers to the side furthest from the entrance. The dark areas on the tooth roots are acrylic paint that could not be removed by debridement. Therefore, the less dark areas there are, the better the debridement and the improved technique. In the photograph in Figure 11, the black areas became less noticeable with each training session, indicating that the trainee's debridement technique had improved.

[0029] During practice, trainees may operate the curette incorrectly, and such situations can be captured using this training model. Figure 12 shows a photograph of the curette cutting edge becoming dislodged when a trainee was practicing debridement using the subgingival debridement training device. [Example]

[0030] The subgingival debridement training model according to the present invention also allows for training by implanting multiple teeth. Figure 13 is a front view of a subgingival debridement training model capable of implanting four teeth, with four teeth implanted. From left to right, the implanted teeth are the first premolar, second premolar, first molar, and second molar. This embodiment achieves a state closer to that of a human jaw than Example 1. [Industrial Applicability]

[0031] The subgingival debridement training model and subgingival debridement training device of the present invention contribute to improving the subgingival debridement skills of dentists and dental hygienists engaged in dental treatment. When using this training model to practice debridement, the training model can be placed on a table as shown in Figure 8, or the training model can be fixed using a fixation device so that the position and inclination are the same as the position of a patient's mouth in clinical practice, allowing training to be conducted in a condition closer to clinical practice. [Explanation of symbols]

[0032] 1 Subgingival debridement training model 2 Alveolar bone 2-1 Tooth implantation area 2-2 Immediately curing resin 3 Gingiva 3-1 hole 3-2 Observation window 4 Teeth 4-1 Tooth root 4-2 Dental crown 5-1 Dowel Pin Obe 5-2 Dowel pin female part 6 Subgingival debridement training device 7 Practice Table 8 Video shooting, display, recording and playback device 9 desk 10 Image display, recording and playback device 11 Trainee

Claims

1. A subgingival debridement training model, It has an alveolar bone portion and a gingival portion placed thereon, The alveolar bone portion and the gingiva portion are detachable, The alveolar bone portion is platform-shaped and has a tooth implantation portion for implanting a tooth at approximately the center of the upper surface, The gingival section is saddle-shaped, has observation windows on both sides, and has a hole on the top surface; the hole is located directly above the tooth implantation portion, and when a tooth is implanted in the tooth implantation portion, the crown of the tooth protrudes from the hole; and the hole is sized such that when the tooth is implanted, the root of the tooth cannot be seen directly from the direction of the crown of the tooth. When a tooth is implanted in the subgingival debridement training model by implanting the tooth in the tooth implantation site, the root of the tooth can be directly observed through the observation window. A subgingival debridement training model characterized by:

2. 2. The subgingival debridement training model according to claim 1, The female part of the dowel pin is embedded in the tooth implantation area. A subgingival debridement training model characterized by:

3. A subgingival debridement training device, A subgingival debridement training model according to claim 1 or 2, The subgingival debridement training model has a video capture, display, recording and playback device on the outside of the two observation windows. A subgingival debridement training device characterized by:

4. The subgingival debridement training device according to claim 3, The subgingival debridement training device has an image display device and an image recording / playback device electrically connected to the video recording / display / recording / playback device. A subgingival debridement training device characterized by:

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