Dental implantology guidance system and inspection method

Abstract

A tooth transplantation guide system and inspection method, a transplantation guide system, comprising a transplantation socket preparation hole guide plate and a tooth root preparation hole guide plate, the transplantation socket preparation hole guide plate has a transplantation guide hole, the contour of the transplantation guide hole is consistent with the tooth neck line contour of the transplanted tooth, and the transplantation guide hole coincides with the transplantation direction of the tooth to be transplanted; the tooth root preparation hole guide plate has a guide sleeve and a drill sleeve, the axial directions of the guide sleeve and the drill sleeve are consistent with the target tooth root direction of the tooth to be transplanted; the transplantation guide hole and the drill sleeve correspond to the same tooth socket position. The invention has the advantages of accurate positioning, precise bone removal, small bone damage, reduced ex vivo time of the transplanted tooth, and significantly improved transplantation success rate.

Description

Technical Field

[0001] The invention discloses an autologous tooth transplantation guiding system and a testing method. Background Art

[0002] Autologous tooth transplantation refers to a procedure that removes non-functional teeth (such as wisdom teeth) and transplants them to another location in the alveolar bone of the same individual, allowing the originally non-functional teeth to perform normal dental functions. Non-functional teeth include impacted, impacted, or erupted teeth transplanted into surgically prepared alveolar sockets. The advantage of this type of transplanted tooth is that it avoids the spread of diseases between allografts by using teeth that have their own biological activity, retaining the potential of teeth to induce alveolar bone growth, and having proprioceptive function and normal periodontal ligament cells. It is safe and practical. The implantation accuracy of the transplanted tooth directly affects the accuracy of the final position of the transplanted tooth.

[0003] Traditional tooth transplantation surgery uses a high-speed turbine for implant bed preparation. The turbine has a high speed, large vibration, poor controllability, and inaccurate bone removal. The autologous tooth needs to be repeatedly tested in the transplant socket and adjusted many times to complete the preparation of the transplant socket. This not only aggravates the damage to the bone tissue, but also increases the time of autologous tooth separation and the chance of contamination. It often leads to the preparation of the transplant socket being too large, making it difficult to achieve good initial stability after the transplanted tooth is implanted, and the bone healing effect between the transplanted tooth and the bone tissue is poor. The implant bed is prepared by using an implant machine combined with a surgical guide. The prepared hole is highly controllable, and the depth of bone preparation can be precisely controlled, ensuring that the transplant socket and the transplanted tooth root are in close contact. The transplanted tooth can obtain better stability after implantation, the time of transplanted tooth separation is greatly shortened, and the healing effect of periodontal pulp tissue after transplantation is better. Summary of the invention

[0004] The purpose of the present invention is to provide a method for solving the problem of inaccurate preparation of the transplantation hole during the autologous tooth transplantation operation, which easily leads to the failure of the transplanted tooth to integrate with the patient's tooth bone, and to improve the success rate of transplantation.

[0005] In the autologous tooth transplantation surgery, after the recipient area and the transplanted tooth are determined, the transplanted tooth is taken out, and a hole is prepared in the recipient area to obtain a transplantation socket that matches the cervical line of the transplanted tooth. The depth of the transplantation socket is about 1 to 2 mm. Then a hole is prepared in the transplantation socket to obtain a root socket that accommodates the root of the transplanted tooth. If there are several roots of the transplanted tooth, several root sockets need to be prepared, and the direction of the root socket needs to be consistent with the direction of the root of the transplanted tooth. After the hole preparation is completed, the transplanted tooth is implanted into the transplantation socket. The cervical line of the transplanted tooth is tightly matched with the transplantation socket, the root is located in the root socket, and the transplanted tooth does not contact the occlusal tooth, completing the retention of the autologous tooth transplantation.

[0006] It can be seen from the process of autologous tooth transplantation that when preparing holes for transplantation sockets, the prepared holes need to be accurately guided in order to accurately prepare transplantation sockets that match the cervical line of the transplanted tooth, and the direction of the transplantation socket is consistent with the axial direction of the transplanted tooth, so that the transplanted tooth does not interfere with the adjacent teeth. When preparing holes for root sockets, the prepared holes also need to be accurately guided in order to accurately prepare transplantation sockets that match the roots of the transplanted teeth. The direction of each root socket is consistent with the root direction of the transplanted tooth and the axial direction of the transplanted tooth. The root socket must be able to accommodate the root and not interfere with the implantation direction of the transplanted tooth. After the hole preparation is completed, it is also necessary to check whether the transplantation socket and the root socket are matched in place, whether the cervical line of the transplanted tooth is tightly fitted with the transplantation socket, the root is located in the root socket, and the transplanted tooth and the occlusal tooth are not in contact. If any of these three requirements are not met, the transplantation may fail.

[0007] However, it should be pointed out here that this transplantation plan is not only applicable to the patient's own non-functional teeth, but also to simulated natural teeth that are formed based on the patient's own natural tooth model and are consistent with the shape and size of the patient's own teeth, and is also applicable to donated teeth obtained through other means.

[0008] The object of the present invention is to provide a guiding system for guiding hole preparation and checking the accuracy of hole preparation in tooth transplantation surgery.

[0009] The transplant surgery guide system comprises a transplant socket preparation hole guide plate and a tooth root preparation hole guide plate. The transplant socket preparation hole guide plate has a transplant guide hole, the contour of the transplant guide hole is consistent with the contour of the tooth neck line of the transplanted tooth, and the transplant guide hole coincides with the transplant direction of the tooth to be transplanted; the tooth root preparation hole guide plate has a guide sleeve and a drill sleeve, the axial directions of the guide sleeve and the drill sleeve are consistent with the target root direction of the tooth to be transplanted; the transplant guide hole and the drill sleeve correspond to the same tooth socket position.

[0010] Preferably, the transplant inspection guide body has the root of the tooth to be transplanted, and the root is consistent with the target root direction of the tooth to be transplanted; the transplant guide hole, guide sleeve and drill sleeve, and the root correspond to the same alveolar position.

[0011] Transplantation hole preparation guide

[0012] The transplant socket preparation hole guide plate comprises a main body matched with the tooth socket; the guide plate is provided with a transplant guide hole, the contour of the transplant guide hole is consistent with the contour of the tooth neck line of the transplanted tooth, and the transplant guide hole coincides with the transplant direction of the tooth to be transplanted.

[0013] Preferably, the transplant guide hole has a size that matches the transplanted tooth. In this way, the transplant socket prepared with the transplant guide hole as a template also matches the cervical part of the transplanted tooth. The transplanted tooth relies on the alveolar bone in the transplant socket to achieve the main retention of the transplanted tooth and the alveolar bone, and the root receiving hole that matches the root of the transplanted tooth only serves to accommodate the root and does not play a retention role.

[0014] Preferably, there is at least one transplantation guide hole on the transplantation socket preparation hole guide plate, and each transplantation guide hole matches the size of the cervical line of the respective transplanted tooth.

[0015] Preferably, the implantation socket preparation hole guide plate has an anastomotic surface that anastomoses with the patient's implant jaw. The implantation guide plate anastomoses with the implant jaw and fixes it to provide a stable guide for the implantation socket preparation hole of the implantation operation.

[0016] Preferably, the transplantation guide plate has an adjacent tooth fixing portion, which is used to tightly fit the guide plate and the adjacent tooth.

[0017] The method for making a transplant socket preparation guide plate comprises the following operations: photographing a patient's oral CT scan to obtain the patient's missing tooth position and select a transplanted tooth, wherein the oral CT data has an alveolus, a tooth root and a crown; obtaining model data of the patient's oral cavity, wherein the model has an alveolus and a crown; reconstructing a three-dimensional model of the patient's oral cavity and a three-dimensional model of the transplanted tooth, aligning the three-dimensional model data with the oral CT data, and obtaining a three-dimensional oral model having an alveolus, a tooth crown and a tooth root; reconstructing a three-dimensional model of the transplanted tooth and determining the area in the oral three-dimensional model that needs to be transplanted; placing the transplanted tooth model in a recipient area, adjusting the position of the transplanted tooth model, making the implantation depth of the transplanted tooth consistent with that of an adjacent tooth, having no interference with the root of the adjacent tooth, and having no occlusal contact with the opposing tooth; obtaining a tooth neck line where the transplanted tooth model intersects with the tooth neck line; and extending the tooth neck area outside the tooth neck line outward in a layer thickness to form a transplant guide plate model.

[0018] Preferably, the alveolar region outside the cervical line extends outward by a layer thickness to form a preliminary transplant guide model, and the preliminary transplant guide model is molded into a solid guide model.

[0019] Root preparation guide

[0020] The tooth root preparation guide plate comprises a body matched with the tooth socket, and the guide plate is provided with a guide sleeve and a drill sleeve, wherein the axial direction of the guide sleeve and the drill sleeve is consistent with the target tooth root direction of the tooth to be transplanted. The target tooth root refers to the tooth root corresponding to the root socket where the hole needs to be prepared.

[0021] Preferably, a plurality of tooth root preparation hole guide plates form a tooth root preparation hole guide system, and the number of the tooth root preparation hole guide plates is consistent with the number of tooth roots to be transplanted. When the transplanted tooth is determined, the number of tooth roots of the transplanted tooth can be determined. The determination and acquisition scheme of the transplanted tooth adopts the existing technology in the field.

[0022] Preferably, the tooth root preparation hole guide plate has an anastomotic surface that anastomoses with the patient's implant jaw. The implant guide plate anastomoses and fixes with the implant jaw to provide a stable guide for the implant socket preparation hole of the implant surgery.

[0023] Preferably, the tooth root preparation hole guide plate has an adjacent tooth fixing portion, which is an elastic buckle, a snap buckle, etc. that allows the guide plate to fit tightly with the adjacent tooth to achieve the positioning of the guide plate.

[0024] When preparing the root hole, the drill bit and the drill sleeve are used to gradually expand the hole from a small hole to a hole that can accommodate the root. When the transplanted tooth has a bend or barb, the root hole also needs to be able to accommodate such a root.

[0025] The method for making a tooth root preparation guide plate includes the following operations: photographing a patient's oral CT scan to obtain the patient's missing tooth position and select a transplanted tooth, wherein the oral CT data has an alveolus, a tooth root and a crown; obtaining model data of the patient's oral cavity, wherein the model data has an alveolus and a crown; reconstructing a three-dimensional model of the patient's oral cavity and a three-dimensional model of the transplanted tooth, aligning the three-dimensional model data with the oral CT data, and obtaining a three-dimensional oral model having an alveolus, a tooth crown and a tooth root; reconstructing a three-dimensional model of the transplanted tooth and determining the need for transplantation in the three-dimensional oral model; placing the transplanted tooth model in the recipient area, adjusting the position of the transplanted tooth model, making the implantation depth of the transplanted tooth consistent with that of the adjacent tooth, having no interference with the adjacent tooth root, and having no occlusal contact with the opposing tooth; obtaining the position of the target tooth root, making a circumscribed cylinder for the target tooth root, wherein the circumscribed cylinder is the tooth root fossa to be prepared, aligning the guide hole of the preparation hole with the circumscribed cylinder, and extending the alveolar area outside the guide hole outward by a layer thickness to form a tooth root preparation guide plate model. The maximum size drill bit that can be matched by the drill sleeve in the guide hole is consistent with the diameter of the circumscribed cylinder.

[0026] Transplant inspection guide

[0027] The transplant test guide plate includes a body matched with the tooth socket, and is characterized in that the root of the tooth to be transplanted on the guide plate is in the same direction as the target root of the tooth to be transplanted. After the preparation of the transplantation socket and the root socket is completed, the transplantation test guide plate is brought into the patient's mouth, and the root on the guide plate is implanted into the transplantation socket and the root socket, so that the implantation depth of the transplanted tooth is consistent with that of the adjacent tooth and there is no interference with the root of the adjacent tooth, which indicates that the preparation of the transplantation socket and the root socket is successful.

[0028] Preferably, the tooth root includes all parts from the tooth neck line to the root tip, the tooth neck line matches the transplantation socket, and the tooth root matches the tooth root socket.

[0029] Preferably, the tooth to be transplanted includes a root and a crown, and the cervical line of the tooth to be transplanted is located below the body. When the holes for the transplantation socket and the root socket are prepared accurately, the part below the cervical line is used to check whether the tooth to be transplanted can match the transplantation socket and the root socket; the crown is used to check whether the tooth to be transplanted has no occlusal contact with the opposing tooth.

[0030] Preferably, the area of ​​the body other than the teeth to be transplanted is the dentition envelope surface. The so-called dentition envelope surface refers to the curved surface that just envelopes the teeth outside the recipient area, and the height of the dentition envelope surface is consistent with the height of the teeth outside the recipient area.

[0031] Preferably, the transplantation inspection guide plate has an anastomotic surface that anastomoses with the patient's implant jaw, and the anastomotic surface provides a stable guide for the transplantation socket preparation hole of the transplantation operation.

[0032] Preferably, the transplantation inspection guide plate has an adjacent tooth fixing portion, which is used to match the guide plate with the adjacent tooth.

[0033] The method for making a transplant inspection guide plate includes the following operations: photographing a patient's oral CT scan to obtain the patient's missing tooth position and select a transplanted tooth, wherein the oral CT data has an alveolus, a tooth root and a crown; obtaining model data of the patient's oral cavity, wherein the model data has an alveolus and a crown; reconstructing a three-dimensional model of the patient's oral cavity and three-dimensional model data of the transplanted tooth, aligning the three-dimensional model data with the oral CT data, and obtaining a three-dimensional oral model having an alveolus, a tooth crown and a tooth root; reconstructing a three-dimensional model of the transplanted tooth to determine which part of the oral three-dimensional model needs to be transplanted; placing the transplanted tooth model in a recipient area, adjusting the position of the transplanted tooth model, making the implantation depth of the transplanted tooth consistent with that of the adjacent tooth, having no interference with the adjacent tooth root, and having no occlusal contact with the opposing tooth; obtaining a root model from the cervical line of the transplanted tooth to the root apex, extending the alveolar area outside the transplanted tooth outward by a layer thickness to form a body, and the body and the root model form a transplant inspection guide plate model.

[0034] The method for testing the tooth transplantation plan includes the following steps:

[0035] 1. Obtain the dental plaster model of the tooth to be transplanted, and make the transplantation socket preparation guide, root socket preparation guide and transplantation inspection guide according to the transplantation plan;

[0036] 2. Put the transplant socket preparation hole guide plate on the plaster model of the jaw. The transplant socket preparation hole guide plate should be completely in line with the jaw surface. Press the jaw surface of the guide plate up and down with two fingers to ensure that there is no shaking. The transplant guide hole corresponds to the transplant recipient area.

[0037] 3. Use the implantation handpiece and the corresponding pressing plate, and use a ball drill to drill along the contour of the transplantation guide hole to obtain a transplantation socket. The depth of the transplantation socket is about 1-2mm, and the contour of the transplantation socket is consistent with the contour of the transplantation hole.

[0038] 4. Remove the implant socket preparation guide plate, put the root socket preparation guide plate on the plaster model, use the implant mobile phone with the pressure plate and drill, use the drill to prepare the hole downwards, and prepare the root socket; determine whether the current root is the last root to be prepared, if so, the root socket preparation is completed; if not, obtain the next root socket preparation guide plate that matches the next root, and repeat step 4;

[0039] 5. After the root socket preparation is completed, remove the root socket preparation guide and put the transplant inspection guide on the plaster model. If the root of the transplant inspection guide matches the transplant socket and the root socket, and has no contact with the opposing tooth, the guidance of the guide system is successful; if the transplant inspection guide cannot meet the transplantation conditions with the plaster model, it means that the guidance system has failed and the transplant socket preparation guide needs to be adjusted.

[0040] After a complete transplantation plan is formulated, the patient will undergo a transplantation operation. The confirmed non-functional autologous tooth is extracted and cleaned, and the printed surgical guide for the precise positioning of the autologous tooth transplantation is placed in the patient's mouth. The guide should fit the patient's jaw completely, and two fingers are used to press the jaw of the guide up and down to ensure that there is no shaking. The hole is prepared, and this hole preparation process is the same as the process of preparing holes using traditional implant guides. After the hole in the transplantation socket is prepared, the previously determined non-functional tooth is placed in the transplantation socket. According to the designed transplantation plan, the position of the transplanted tooth is correctly placed so that the transplanted tooth is fully in place to complete the transplantation operation.

[0041] A solid model of the transplanted tooth is formed, and a solid guide model is used in conjunction with the plaster model to prepare an implant hole that is consistent with the contour of the tooth neck line on the plaster model with a ball-end drill, and a root accommodating hole that can accommodate the tooth root is prepared in the implant hole. The solid model of the transplanted tooth is placed in the implant hole. If the implantation depth of the transplanted tooth in the implant hole is consistent with that of the adjacent teeth, there is no interference with the roots of the adjacent teeth, and there is no occlusal contact with the opposing teeth, the preliminary transplantation guide model is used as the transplantation guide; if the transplanted tooth does not meet any of the following conditions after being implanted in the implant hole, such as the implantation depth being consistent with that of the adjacent teeth, there being no interference with the roots of the adjacent teeth, or there being no occlusal contact with the opposing teeth, the position of the transplanted tooth model is corrected in the three-dimensional oral model until the above requirements are met.

[0042] The beneficial effects of the present invention are as follows: 1. Determine the transplanted tooth to be transplanted according to the transplantation plan, simulate and drill the preparation of the transplantation socket on the plaster model, and use the transplantation guide to accurately locate the position of the hole required for transplanting the root of the transplanted tooth. After the hole is prepared, remove the tooth to be transplanted, clean it, check the buccal and lingual position, and implant the transplanted tooth. Using the transplantation guide to prepare the hole has the advantages of accurate transplantation socket positioning, no slipping of the drill bit during hole preparation, accurate bone removal, and significantly improved transplantation success rate.

[0043] 2. Use digital software to simulate the precise position of the autologous tooth transplant on the 3D software before transplantation. And determine the size of the transplantation guide hole according to the shape and size of the transplanted tooth, so that the doctor can prepare the hole more accurately when transplanting the autologous tooth, which is consistent with the position simulated on the 3D software.

[0044] 3. The transplant guide made by 3D printing can more accurately adapt the root socket to the root of the transplanted tooth, reducing the time the transplanted tooth is out of the body. The prepared transplant socket and root socket formed in this way are more accurate; it has the advantages of accurate positioning, precise bone removal, small bone damage, reducing the time the transplanted tooth is out of the body, and can significantly improve the success rate of transplantation. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the transplant socket preparation hole guide.

[0046] Figure 2 It is a schematic diagram of the root socket preparation guide.

[0047] Figure 3 is a schematic diagram of a transplant inspection guide.

[0048] Figure 4 This is a top view of the transplant socket preparation guide plate worn on the plaster model.

[0049] Figure 5 This is a top view of the root socket preparation guide plate worn on the plaster model.

[0050] Figure 6 This is a top view of the transplant test guide worn on the plaster model.

[0051] Figure 7 It is a schematic diagram of a plaster model of an edentulous jaw.

[0052] Figure 8 This is a schematic diagram of the transplanted tooth being placed into the plaster model.

[0053] Fig. 9 Schematic diagram of the transplant test guide placed into the plaster model.

[0054] Fig.10 Schematic diagram of the implanted tooth placed in the plaster model. DETAILED DESCRIPTION

[0055] The structures involved in the present invention or the technical terms used are further explained below. If not otherwise specified, they are understood and interpreted according to the general meanings commonly used in the art.

[0056] Transplantation

[0057] Tooth transplantation refers to the operation of transplanting autologous teeth or allogeneic teeth to the edentulous part of the mouth to perform normal tooth function. The transplanted teeth that can be used for tooth transplantation include but are not limited to the patient's own non-functional teeth, simulated natural teeth that are formed according to the patient's own natural tooth model and are consistent with the shape and size of the autologous teeth, and donated teeth obtained through other means.

[0058] Transplantation hole preparation guide

[0059] During tooth transplantation, the first thing to do is to prepare a transplantation socket that matches the cervical line of the transplanted tooth, which requires a guide plate that can accurately guide the prepared transplantation socket.

[0060] like Figure 1 and Figure 4 As shown, the transplant socket preparation hole guide plate includes a main body that matches the tooth socket; it is characterized in that: the guide plate is provided with a transplant guide hole, the contour of the transplant guide hole is consistent with the contour of the tooth neck line of the transplanted tooth, and the transplant guide hole coincides with the transplant direction of the tooth to be transplanted.

[0061] The transplant guide hole has a size that matches the transplanted tooth. In this way, the transplant socket prepared with the transplant guide hole as a template also matches the cervical part of the transplanted tooth. The transplanted tooth relies on the alveolar bone in the transplant socket to achieve the main retention of the transplanted tooth and the alveolar bone. The root receiving hole that matches the root of the transplanted tooth only serves to accommodate the root and does not play a retention role.

[0062] In some embodiments, there is at least one transplantation guide hole on the transplantation socket preparation guide plate, and each transplantation guide hole matches the size of the cervical line of the respective transplanted tooth.

[0063] The implantation socket preparation hole guide plate has an anastomotic surface that anastomoses with the patient's implanted jaw. The implantation guide plate anastomoses with the implanted jaw and provides a stable guide for the implantation socket preparation hole of the implantation operation.

[0064] In some embodiments, the transplantation guide plate has an adjacent tooth fixing portion, which is used to tightly fit the guide plate and the adjacent tooth.

[0065] A method for making a guide plate for preparing a transplantation socket hole comprises the following operations: photographing a patient's oral CT scan to obtain the patient's missing tooth position and select a transplanted tooth, wherein the oral CT data has a tooth socket, a tooth root and a tooth crown; obtaining model data of the patient's oral cavity, wherein the model has a tooth socket and a tooth crown; reconstructing a three-dimensional model of the patient's oral cavity and a three-dimensional model of the transplanted tooth, aligning the three-dimensional model data with the oral CT data, and obtaining a three-dimensional oral model having a tooth socket, a tooth crown and a tooth root; reconstructing a three-dimensional model of the transplanted tooth and determining that transplantation is required in the three-dimensional oral model; placing the transplanted tooth model in a receiving tooth area, adjusting the position of the transplanted tooth model, making the implantation depth of the transplanted tooth consistent with that of an adjacent tooth, having no interference with the adjacent tooth root, and having no occlusal contact with an opposing tooth; obtaining a tooth neck line where the transplanted tooth model intersects with the tooth socket; and extending the tooth socket area outside the tooth neck line outwardly in a layer thickness to form a transplantation guide plate model.

[0066] The alveolar area outside the cervical line extends outward by a layer thickness to form a preliminary transplant guide model, and the preliminary transplant guide model is molded into a solid guide model.

[0067] Root preparation guide

[0068] The transplanted tooth has the shape of a natural tooth, including a natural root. Therefore, after the preparation of the transplant socket is completed, a root hole that can accommodate the root needs to be prepared, which requires a root hole guide to guide the root hole.

[0069] like Figure 2 and Figure 5 As shown, the tooth root preparation guide plate includes a body matching the tooth socket, and the guide plate is provided with a guide sleeve and a drill sleeve, characterized in that the axial direction of the guide sleeve and the drill sleeve is consistent with the target root direction of the tooth to be transplanted. The target root refers to the root corresponding to the root socket that currently needs to be prepared.

[0070] A plurality of tooth root preparation hole guide plates form a tooth root preparation hole guide system, and the number of the tooth root preparation hole guide plates is consistent with the number of tooth roots to be transplanted. When the transplanted tooth is determined, the number of tooth roots of the transplanted tooth can be determined. The determination and acquisition scheme of the transplanted tooth adopts the existing technology in the field.

[0071] The tooth root preparation hole guide plate has an anastomotic surface that is anastomotic with the patient's implant jaw. The implant guide plate is anastomotic and fixed with the implant jaw to provide a stable guide for the preparation hole of the implant socket in the implant surgery.

[0072] The tooth root preparation hole guide plate has an adjacent tooth fixing portion, which is an elastic buckle, a snap buckle, etc. that allows the guide plate to be tightly matched with the adjacent tooth to achieve the positioning of the guide plate.

[0073] When preparing the root hole, the drill bit and the drill sleeve are used to gradually expand the hole from a small hole to a hole that can accommodate the root. When the transplanted tooth has a bend or barb, the root hole also needs to be able to accommodate such a root.

[0074] A method for making a tooth root preparation guide plate includes the following operations: photographing a patient's oral CT scan, obtaining the patient's missing tooth position, selecting a transplanted tooth, wherein the oral CT data has a tooth socket, a tooth root and a tooth crown; obtaining model data of the patient's oral cavity, wherein the model data has a tooth socket and a tooth crown; reconstructing a three-dimensional model of the patient's oral cavity and a three-dimensional model of the transplanted tooth, aligning the three-dimensional model data with the oral CT data, and obtaining a three-dimensional oral model having a tooth socket, a tooth crown and a tooth root; reconstructing a three-dimensional model of the transplanted tooth, and determining that transplantation is required in the three-dimensional oral model; placing the transplanted tooth model in the receiving tooth area, adjusting the position of the transplanted tooth model, making the implantation depth of the transplanted tooth consistent with that of the adjacent tooth, having no interference with the adjacent tooth root, and having no occlusal contact with the opposing tooth; obtaining the position of the target tooth root, making a circumscribed cylinder for the target tooth root, wherein the circumscribed cylinder is the tooth root fossa to be prepared, aligning the guide hole of the preparation hole with the circumscribed cylinder, and extending the tooth socket area outside the guide hole outward by a layer thickness to form a tooth root preparation guide plate model. The maximum size drill bit that can be matched by the drill sleeve in the guide hole is consistent with the diameter of the circumscribed cylinder.

[0075] Transplant inspection guide

[0076] After the transplantation plan is determined, it is necessary to check whether the transplantation socket and root socket of the prepared hole can accommodate the tooth to be transplanted, and to accurately position the tooth to be transplanted so that the transplanted tooth meets the position requirements after being in place, so as to make a transplantation inspection guide.

[0077] like Figure 3 , Figure 6 and Fig. 9As shown, the transplant test guide includes a body that matches the tooth socket, and is characterized in that the root of the tooth to be transplanted on the guide is in the same direction as the target root of the tooth to be transplanted. After the preparation of the transplantation socket and the root socket is completed, the transplantation test guide is brought into the patient's mouth, and the root on the guide is implanted into the transplantation socket and the root socket, so that the implantation depth of the transplanted tooth is consistent with that of the adjacent tooth and there is no interference with the root of the adjacent tooth, which indicates that the preparation of the transplantation socket and the root socket is successful.

[0078] The root includes all parts from the cervical line to the root tip. The cervical line matches the transplantation socket, and the root matches the root socket.

[0079] The tooth to be transplanted includes a root and a crown, and the cervical line of the tooth to be transplanted is located below the body. When the holes for the transplantation socket and the root socket are prepared accurately, the part below the cervical line is used to check whether the tooth to be transplanted can match the transplantation socket and the root socket; the crown is used to check whether the tooth to be transplanted has no occlusal contact with the opposing tooth.

[0080] In some embodiments, the area of ​​the body other than the teeth to be transplanted is the dentition envelope surface. The so-called dentition envelope surface refers to a curved surface that just envelopes the teeth outside the recipient area, and the height of the dentition envelope surface is consistent with the height of the teeth outside the recipient area.

[0081] The transplant test guide has an anastomotic surface that is anastomotic with the patient's implant jaw. The anastomotic surface provides a stable guide for the transplant socket preparation hole of the transplant surgery.

[0082] The transplant inspection guide plate has an adjacent tooth fixing portion, which is used to match the guide plate with the adjacent tooth.

[0083] The method for making a transplant inspection guide plate includes the following operations: photographing a patient's oral CT scan to obtain the patient's missing tooth position and select a transplanted tooth, wherein the oral CT data has an alveolus, a tooth root and a crown; obtaining model data of the patient's oral cavity, wherein the model data has an alveolus and a crown; reconstructing a three-dimensional model of the patient's oral cavity and three-dimensional model data of the transplanted tooth, aligning the three-dimensional model data with the oral CT data, and obtaining a three-dimensional oral model having an alveolus, a tooth crown and a tooth root; reconstructing a three-dimensional model of the transplanted tooth to determine which part of the oral three-dimensional model needs to be transplanted; placing the transplanted tooth model in a recipient area, adjusting the position of the transplanted tooth model, making the implantation depth of the transplanted tooth consistent with that of the adjacent tooth, having no interference with the adjacent tooth root, and having no occlusal contact with the opposing tooth; obtaining a root model from the cervical line of the transplanted tooth to the root apex, extending the alveolar area outside the transplanted tooth outward by a layer thickness to form a body, and the body and the root model form a transplant inspection guide plate model.

[0084] Dental Implant Surgery Guide System

[0085] Dental transplantation requires two hole preparations, the first one is the transplant socket preparation, and the second one is the root socket preparation. Therefore, during the entire operation, at least a guiding system consisting of a transplant socket hole preparation guide and a root socket hole preparation guide is needed to perform precise hole preparation guidance.

[0086] like Figure 1-9 As shown, a tooth transplant surgery guide system includes a transplant socket hole preparation guide plate and a root hole preparation guide plate; each guide plate has its own guide plate body; the transplant socket hole preparation guide plate body is provided with a transplant guide hole, the contour of the transplant guide hole is consistent with the tooth neck line contour of the transplanted tooth, and the transplant guide hole coincides with the transplant direction of the tooth to be transplanted; the root hole preparation guide plate body is provided with a guide sleeve and a drill sleeve, the axial directions of the guide sleeve and the drill sleeve are consistent with the target root direction of the tooth to be transplanted, and the transplant guide hole and the guide sleeve and drill sleeve of the root socket hole preparation guide plate correspond to the same tooth socket position.

[0087] The tooth transplantation surgical guide system also includes a transplantation inspection guide plate body having the root of the tooth to be transplanted, the root is consistent with the target root direction of the tooth to be transplanted; the transplantation guide hole, guide sleeve and drill sleeve, and the root correspond to the same alveolar position.

[0088] Methods for testing tooth transplantation plans

[0089] In order to ensure the rationality and accuracy of the tooth transplantation plan, a guide system made according to the tooth transplantation plan is used to perform a preoperative test of the rationality and accuracy of the tooth transplantation plan.

[0090] Methods for testing transplantation plans, such as Figure 1-10 As shown, the following steps are included:

[0091] 1. Obtain the dental plaster model of the tooth to be transplanted, and make the transplantation socket preparation guide, root socket preparation guide and transplantation inspection guide according to the transplantation plan;

[0092] 2. Put the transplant socket preparation hole guide plate on the plaster model of the jaw. The transplant socket preparation hole guide plate should be completely in line with the jaw surface. Press the jaw surface of the guide plate up and down with two fingers to ensure that there is no shaking. The transplant guide hole corresponds to the transplant recipient area.

[0093] 3. Use the implantation handpiece and the corresponding pressing plate, and use a ball drill to drill along the contour of the transplantation guide hole to obtain a transplantation socket. The depth of the transplantation socket is about 1-2mm, and the contour of the transplantation socket is consistent with the contour of the transplantation hole.

[0094] 4. Remove the implant socket preparation guide plate, put the root socket preparation guide plate on the plaster model, use the implant mobile phone with the pressure plate and drill, use the drill to prepare the hole downwards, and prepare the root socket; determine whether the current root is the last root to be prepared, if so, the root socket preparation is completed; if not, obtain the next root socket preparation guide plate that matches the next root, and repeat step 4;

[0095] 5. After the root socket preparation is completed, remove the root socket preparation guide and put the transplant inspection guide on the plaster model. If the root of the transplant inspection guide matches the transplant socket and the root socket, and has no contact with the opposing tooth, the guidance of the guide system is successful; if the transplant inspection guide cannot meet the transplantation conditions with the plaster model, it means that the guidance system has failed and the transplant socket preparation guide needs to be adjusted.

[0096] After a complete transplantation plan is formulated, the patient will undergo a transplantation operation. The confirmed non-functional autologous tooth is extracted and cleaned, and the printed surgical guide for the precise positioning of the autologous tooth transplantation is placed in the patient's mouth. The guide should fit the patient's jaw completely, and two fingers are used to press the jaw of the guide up and down to ensure that there is no shaking. The hole is prepared, and this hole preparation process is the same as the process of preparing holes using traditional implant guides. After the hole in the transplantation socket is prepared, the previously determined non-functional tooth is placed in the transplantation socket. According to the designed transplantation plan, the position of the transplanted tooth is correctly placed so that the transplanted tooth is fully in place to complete the transplantation operation.

[0097] A solid model of the transplanted tooth is formed, and a solid guide model is used in conjunction with the plaster model to prepare an implant hole that is consistent with the contour of the tooth neck line on the plaster model with a ball-end drill, and a root accommodating hole that can accommodate the tooth root is prepared in the implant hole. The solid model of the transplanted tooth is placed in the implant hole. If the implantation depth of the transplanted tooth in the implant hole is consistent with that of the adjacent teeth, there is no interference with the roots of the adjacent teeth, and there is no occlusal contact with the opposing teeth, the preliminary transplantation guide model is used as the transplantation guide; if the transplanted tooth does not meet any of the following conditions after being implanted in the implant hole, such as the implantation depth being consistent with that of the adjacent teeth, there being no interference with the roots of the adjacent teeth, or there being no occlusal contact with the opposing teeth, the position of the transplanted tooth model is corrected in the three-dimensional oral model until the above requirements are met.

[0098] The present invention first determines the transplanted tooth to be transplanted according to the transplantation plan, simulates and drills the preparation of the transplantation socket on the plaster model, and uses the transplantation guide to accurately locate the position of the hole required for transplanting the root of the transplanted tooth. After the hole is prepared, the tooth to be transplanted is removed, cleaned, the buccal and lingual position is checked, and the transplanted tooth is implanted. The present invention has the advantages of accurate transplantation socket positioning, no slipping of the drill bit during hole preparation, accurate bone removal, and the transplanted tooth can be immediately transplanted into the pre-prepared transplantation socket after extraction, which greatly shortens the transplantation operation time, can better retain the biological activity of the transplanted tooth, and significantly improves the transplantation success rate.

[0099] The contents described in the embodiments of this specification are merely an enumeration of the implementation forms of the inventive concept. The protection scope of the present invention should not be regarded as limited to the specific forms described in the embodiments. The protection scope of the present invention also extends to equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.

Claims

1. An implantation guidance system, characterized in that: The guide system includes a transplantation socket preparation hole guide plate and a tooth root preparation hole guide plate. The transplantation socket preparation hole guide plate has a transplantation guide hole. The contour of the transplantation guide hole is consistent with the contour of the tooth neck line of the transplanted tooth, and the transplantation guide hole coincides with the transplantation direction of the tooth to be transplanted; a plurality of tooth root preparation hole guide plates form a tooth root preparation hole guide system, and the number of the tooth root preparation hole guide plates is consistent with the number of tooth roots to be transplanted; the tooth root preparation hole guide plate has a guide sleeve and a drill sleeve, and the axial directions of the guide sleeve and the drill sleeve are consistent with the target root direction of the tooth to be transplanted; the transplantation guide hole and the drill sleeve correspond to the same tooth socket position; The transplant inspection guide body has the root of the tooth to be transplanted, and the root is consistent with the target root direction of the tooth to be transplanted; the transplant guide hole, the guide sleeve and the drill sleeve, and the root correspond to the same alveolar position.

2. The implantation guidance system according to claim 1, characterized in that: The implant guide hole has a size that matches the implanted tooth.

3. The implantation guidance system according to claim 1, characterized in that: There is at least one transplantation guide hole on the transplantation socket preparation hole guide plate, and each transplantation guide hole matches the size of the cervical line of the respective transplanted tooth.

4. The implantation guidance system according to claim 1, wherein: The method for making a transplant socket preparation guide plate includes the following operations: photographing a patient's oral CT scan to obtain the patient's missing tooth position and select a transplanted tooth, wherein the oral CT data has an alveolus, a tooth root and a crown; obtaining model data of the patient's oral cavity, wherein the model has an alveolus and a crown; reconstructing a three-dimensional model of the patient's oral cavity and a three-dimensional model of the transplanted tooth, aligning the three-dimensional model data with the oral CT data, and obtaining a three-dimensional oral model having an alveolus, a tooth crown and a tooth root; reconstructing a three-dimensional model of the transplanted tooth and determining the area in the oral three-dimensional model that needs to be transplanted; placing the transplanted tooth model into the recipient area, adjusting the position of the transplanted tooth model, making the implantation depth of the transplanted tooth consistent with that of the adjacent tooth, having no interference with the root of the adjacent tooth, and having no occlusal contact with the opposing tooth; obtaining the cervical line where the transplanted tooth model intersects with the alveolus; extending the alveolus area outside the cervical line outward by a layer thickness to form a transplant guide plate model; extending the alveolus area outside the cervical line outward by a layer thickness to form a preliminary transplant guide plate model, and molding the preliminary transplant guide plate model into a solid guide plate model.

5. The implantation guidance system according to claim 1, wherein: The method for making a tooth root preparation guide plate includes the following operations: photographing a patient's oral CT scan to obtain the patient's missing tooth position and select a transplanted tooth, wherein the oral CT data has an alveolus, a tooth root and a crown; obtaining model data of the patient's oral cavity, wherein the model data has an alveolus and a crown; reconstructing a three-dimensional model of the patient's oral cavity and a three-dimensional model of the transplanted tooth, aligning the three-dimensional model data with the oral CT data, and obtaining a three-dimensional oral model having an alveolus, a tooth crown and a tooth root; reconstructing a three-dimensional model of the transplanted tooth and determining which part of the oral three-dimensional model needs to be transplanted; placing the transplanted tooth model into the recipient area, adjusting the position of the transplanted tooth model, making the implantation depth of the transplanted tooth consistent with that of the adjacent tooth, having no interference with the roots of the adjacent teeth, and having no occlusal contact with the opposing teeth; obtaining the position of the target tooth root, making a circumscribed cylinder for the target tooth root, wherein the circumscribed cylinder is the tooth root fossa for which a hole is to be prepared, aligning the guide hole for the preparation hole with the circumscribed cylinder, extending the alveolar area outside the guide hole outward by a layer thickness, and forming a tooth root preparation guide plate model, wherein the maximum size drill bit that can be matched by the drill sleeve in the guide hole is consistent with the diameter of the circumscribed cylinder.

6. The implantation guiding system according to claim 1, wherein: The tooth root includes all parts from the cervical line to the root apex. The cervical line matches the transplantation socket, and the root matches the root socket.

7. The implantation guiding system according to claim 1, wherein: The tooth to be transplanted includes a root and a crown, and the cervical line of the tooth to be transplanted is located below the main body; or, the area of ​​the main body except the tooth to be transplanted is the dentition envelope surface, and the so-called dentition envelope surface refers to the curved surface that just envelopes the teeth outside the recipient area, and the height of the dentition envelope surface is consistent with the height of the teeth outside the recipient area.

8. The implantation guiding system according to claim 1, wherein: The method for making a transplant inspection guide plate includes the following operations: photographing a patient's oral CT scan to obtain the patient's missing tooth position and select a transplanted tooth, wherein the oral CT data has an alveolus, a tooth root and a crown; obtaining model data of the patient's oral cavity, wherein the model data has an alveolus and a crown; reconstructing a three-dimensional model of the patient's oral cavity and three-dimensional model data of the transplanted tooth, aligning the three-dimensional model data with the oral CT data, and obtaining a three-dimensional oral model having an alveolus, a tooth crown and a tooth root; reconstructing a three-dimensional model of the transplanted tooth to determine which part of the oral three-dimensional model needs to be transplanted; placing the transplanted tooth model in a recipient area, adjusting the position of the transplanted tooth model, making the implantation depth of the transplanted tooth consistent with that of the adjacent tooth, having no interference with the adjacent tooth root, and having no occlusal contact with the opposing tooth; obtaining a root model from the cervical line of the transplanted tooth to the root apex, extending the alveolar area outside the transplanted tooth outward by a layer thickness to form a body, and the body and the root model form a transplant inspection guide plate model.

9. A method for testing a tooth transplantation plan comprises the following steps: 1) Obtain a plaster model of the dental jaws that require transplantation, and make a transplantation socket preparation guide, a root socket preparation guide, and a transplantation inspection guide according to the transplantation plan; 2) Put the transplant socket preparation hole guide plate on the plaster model of the jaw. The transplant socket preparation hole guide plate should fit the jaw surface completely. Press the jaw surface of the guide plate up and down with two fingers to ensure that there is no shaking. The transplant guide hole corresponds to the transplant recipient area. 3) Use the implantation handpiece and the corresponding pressing plate, and use a ball drill to drill along the contour of the transplantation guide hole to obtain a transplantation socket. The depth of the transplantation socket is about 1-2 mm, and the contour of the transplantation socket is consistent with the contour of the transplantation hole. 4) Remove the implant socket preparation guide plate, put the root socket preparation guide plate on the plaster model, use the implant mobile phone with the pressure plate and the drill, use the drill to prepare the hole downwards, and prepare the root socket; determine whether the current root is the last root to be prepared, if so, the root socket preparation is completed; if not, obtain the next root socket preparation guide plate that matches the next root, and repeat step 4); 5) After the root socket preparation is completed, remove the root socket preparation guide and put the transplant inspection guide on the plaster model. If the root of the transplant inspection guide matches the transplant socket and the root socket, and has no contact with the opposing tooth, the guidance of the guide system is successful; if the transplant inspection guide cannot meet the transplantation conditions with the plaster model, it means that the guidance system has failed and the transplant socket preparation guide needs to be adjusted.

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