Autologous tooth transplantation surgery tooth in place and adhesive integrated guide plate and manufacturing method

Abstract

The application discloses a self-tooth transplantation surgery tooth positioning and bonding integrated guide plate and a manufacturing method. The transplantation guide plate is used to realize preoperative design of a bonding process. Through simulation of a form of a tooth transplantation surgery tooth positioning guide plate, relative positions of the tooth transplantation guide plate and the tooth transplantation guide plate and adjacent teeth are fixed, so that the tooth transplantation surgery preoperative design implantation position is accurately reproduced in surgery.

Description

Technical Field

[0001] This invention relates to the field of dental transplantation technology, specifically to an integrated guide plate for tooth placement and bonding in autologous tooth transplantation surgery and its manufacturing method. Background Technology

[0002] Autologous tooth transplantation is a surgical procedure that transplants non-functional donor teeth (such as wisdom teeth, impacted teeth, ectopic teeth, supernumerary teeth, etc.) to the missing positions of functional teeth. It utilizes the patient's own natural teeth to repair dentition defects, achieving full utilization of biological resources. Autologous tooth transplantation can achieve periodontal ligament healing, restore normal periodontal tissue and tooth proprioception in the recipient area, and maintain the alveolar bone volume and gingival tissue fullness around the transplanted tooth. Since the donor teeth for autologous tooth transplantation come from the patient's own body, there are no immune rejection, inflammatory reactions, or ethical issues. It is a safe, effective, and efficient way to repair dentition defects.

[0003] However, autologous tooth transplantation also has some limitations, restricting its clinical application. The availability of donor teeth is limited, their morphology varies, and the conditions of the recipient sites differ. A perfect match between the donor tooth, the recipient site, and the missing tooth or edentulous space is not always possible. However, if the procedure is performed according to standard procedures and the periodontal ligament of the donor tooth is preserved, most transplanted teeth can be successfully transplanted. Nevertheless, autologous tooth transplantation often suffers from less than ideal restorative results, with some of the following shortcomings: no occlusal contact with the opposing tooth, gaps between the transplanted tooth and adjacent teeth, and incorrect overbite / overjet relationships (such as reverse overbite, edge-to-edge overbite, or excessive overjet). The reason for unsatisfactory restoration results may be due to the mismatch in the spatial position of the alveolar bone in the edentulous area, but a more common reason lies in the deficiencies of the current clinical procedures for autologous tooth transplantation. Typically, in autologous tooth transplantation surgery, the prepared cavity size is larger than the donor tooth size to loosely accommodate the donor tooth and avoid squeezing or rubbing the donor tooth root, thus preserving the periodontal ligament and promoting its healing. Because of this, the donor tooth will have a certain range of movement when implanted into the cavity in the recipient area. After the transplantation surgery is completed, the position of the transplanted tooth is fixed by bonding or other methods to allow it to heal in one location. The bonding process determines the position of the transplanted tooth after healing, so the bonding process plays a crucial role in the final restoration result.

[0004] In autologous tooth transplantation surgery, a loose cavity can accommodate the donor tooth while allowing it to have a certain degree of mobility before bonding. However, the bonding and fixation process is completed by the doctor's technique, and the position of the donor tooth cannot be precisely determined during bonding, resulting in a large degree of uncertainty and randomness.

[0005] In view of the above-mentioned technical problems in the existing technology, the present invention provides an integrated guide plate for tooth placement and bonding in autologous tooth transplantation surgery and a method for manufacturing it. Summary of the Invention

[0006] This invention proposes an integrated guide plate for tooth placement and bonding in autologous tooth transplantation surgery, and its manufacturing method.

[0007] The present invention adopts the following technical solution:

[0008] A method for fabricating an integrated guide plate for tooth placement and bonding in autologous tooth transplantation surgery, comprising:

[0009] Step 1: Obtain the anatomical morphology of the dental arch and alveolar bone in the oral cavity through CBCT scanning, and obtain the anatomical morphology of the outer surface of the crown and gingiva;

[0010] Step 2: Fit and overlap the CBCT oral scan data to obtain a digital model of the tooth surface morphology;

[0011] Step 3: Simulate the transplant surgery, move the donor tooth to the recipient area, match it with the adjacent teeth, opposing teeth and alveolar bone in the recipient area, determine the implantation position, and ensure that the occlusal relationship, proximal relationship and overbite-overjet relationship of the donor tooth in the recipient area are all in a suitable position.

[0012] Step 4: Construct a digital model of the transplant guide based on the position of the donor tooth in the implantation area and the relationship between the donor tooth and the adjacent teeth on both sides;

[0013] Step 5: Fabricate the transplant guide embryo based on the digital model of the transplant guide;

[0014] Step 6: Perform autologous tooth transplantation surgery using a transplantation guide.

[0015] Furthermore, in step 6, the donor tooth is moved to the implantation area, and a transplantation guide is inserted into the oral cavity to fix the donor tooth that has been moved to the implantation area.

[0016] Furthermore, in step 6, the donor tooth is positioned and fixed in the transplant guide outside the body, and then the transplant guide with the donor tooth fixed is placed and fixed in the recipient area.

[0017] Furthermore, in step 6, the donor tooth is placed in the transplant guide and fixed outside the body, the donor tooth and the guide are implanted together into the oral cavity, the transplant guide is positioned so that the donor tooth is located in the implantation area and the adjacent tooth guide is fixed.

[0018] Furthermore, in step 6, the buccal, lingual, and occlusal surfaces of the donor tooth are all provided with resin that adheres to the surface of the crown, wherein the resin on the buccal and lingual surfaces of the donor tooth extends to below the most prominent point on the axial surface of the crown.

[0019] Furthermore, step 6 also includes removing excess portions of the transplant guide plate and resin from the occlusal and lingual surfaces and the donor tooth.

[0020] Furthermore, in step 6, the portion of the transplant guide plate on the buccal side of the donor tooth is removed after being retained for 6-8 weeks.

[0021] The present invention also provides an integrated guide for tooth placement and bonding in autologous tooth transplantation surgery, comprising:

[0022] The buccal abutment plate abuts against the donor tooth on the buccal side and the adjacent teeth on both sides of the donor tooth;

[0023] The lingual abutment plate abuts against the donor tooth and the adjacent teeth on both sides of the donor tooth on the lingual side, and is fixedly connected to both ends of the buccal abutment plate to form a surrounding frame that abuts against the donor tooth and the adjacent teeth on both sides of the donor tooth on the buccal and lingual sides.

[0024] The positioning plate is located close to the upper end of the occlusal surface of the donor tooth and the adjacent teeth on both sides of the donor tooth, and is fixedly connected to the buccal abutment plate and the lingual abutment plate respectively to maintain the position of the buccal abutment plate and the lingual abutment plate.

[0025] Furthermore, the enclosure frame is provided with a first enclosure frame, a second enclosure frame and a third enclosure frame, wherein the inner surface of the first enclosure frame is used to abut against the tooth surface of the donor tooth, and the inner surfaces of the second enclosure frame and the third enclosure frame are respectively used to abut against the tooth surfaces of the adjacent teeth on both sides.

[0026] Furthermore, the lower edge of the first enclosure frame is close to the periodontal tissue (gingiva) of the donor tooth, while the lower edges of the second and third enclosure frames are respectively used to approach the periodontal tissue (gingiva) of the adjacent teeth on both sides.

[0027] Furthermore, a resin groove is provided on the lingual abutment plate for filling the space between the resin groove and the donor tooth or adjacent tooth with resin material.

[0028] Furthermore, a resin groove is provided on the buccal abutment plate for filling the space between the resin groove and the donor tooth or adjacent tooth with resin material.

[0029] Furthermore, the positioning plate includes a first reinforcing rib fixedly disposed on the enclosure frame, a second reinforcing rib fixedly disposed between the first reinforcing rib and the cheek-side abutment plate, and a third reinforcing rib fixedly disposed between the first reinforcing rib and the tongue-side abutment plate.

[0030] Compared with the prior art, the superior effects of the present invention are as follows: The integrated guide plate and manufacturing method for tooth placement and bonding in autologous tooth transplantation surgery described in the present invention uses a transplantation guide plate to realize the preoperative design of the bonding process. By simulating the form of a transplantation tooth placement guide plate, the relative positions of the transplantation tooth and the guide plate, and the transplantation tooth and the adjacent teeth are fixed, thereby accurately realizing the intraoperative reproduction of the preoperatively designed implantation position of the transplantation tooth. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the integrated guide plate for tooth placement and bonding in autologous tooth transplantation surgery according to an embodiment of the present invention;

[0032] Figure 2This is a schematic diagram of the enclosing frame structure in an embodiment of the present invention;

[0033] Figure 3 This is a cross-sectional schematic diagram of the integrated guide plate in an embodiment of the present invention.

[0034] In the figure, 1-buccal abutment plate, 2-lingual abutment plate, 3-positioning plate, 31-first reinforcing rib, 32-second reinforcing rib, 33-third reinforcing rib, A-enclosing frame, A1-first enclosing frame, A2-second enclosing frame, A3-third enclosing frame, B-gingival undercut, C-resin groove. Detailed Implementation

[0035] To better understand the above-mentioned objectives, features and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Example

[0036] The method for fabricating the integrated guide plate for tooth placement and bonding in autologous tooth transplantation surgery includes:

[0037] Step 1: Obtain the anatomical morphology of the dental arch and alveolar bone in the oral cavity through CBCT scanning, and obtain the anatomical morphology of the outer surface of the crown and gingiva;

[0038] Step 2: Fit and overlap the CBCT oral scan data to obtain a digital model of the tooth surface morphology;

[0039] Step 3: Simulate the transplant surgery, move the donor tooth to the recipient area, match it with the adjacent teeth, opposing teeth and alveolar bone in the recipient area, determine the implantation position, and ensure that the occlusal relationship, proximal relationship and overbite-overjet relationship of the donor tooth in the recipient area are all in a suitable position.

[0040] Step 4: Construct a digital model of the transplant guide based on the position of the donor tooth in the implantation area and the relationship between the donor tooth and the adjacent teeth on both sides;

[0041] Step 5: Fabricate the transplant guide based on the digital model of the transplant guide;

[0042] Step 6: Perform autologous tooth transplantation surgery using a transplantation guide.

[0043] In step 6, the donor tooth is moved to the implantation site, and a transplantation guide is inserted into the oral cavity to fix the donor tooth that has been moved to the implantation site.

[0044] As an improvement, in step 6, the donor tooth is placed and fixed in the transplant guide outside the body, and then the transplant guide with the donor tooth fixed is placed and fixed in the recipient area.

[0045] As another improvement, the donor tooth is placed in the transplant guide plate outside the body for fixation, the donor tooth and the guide plate are implanted into the oral cavity together, the transplant guide plate is positioned, so that the donor tooth is located in the implantation area and the adjacent tooth guide plate is fixed.

[0046] In step 6, resin is provided on the buccal, lingual, and occlusal surfaces of the donor tooth to adhere to the crown surface. The resin on the buccal and lingual surfaces of the donor tooth extends below the most convex point of the crown axial surface, so that after the guide plate is in place, it has an auxiliary positioning, stabilizing position, and holding effect on the donor tooth. Although the resin on the buccal and lingual surfaces of the adjacent teeth does not enter the undercut, it can determine and stabilize the position and prevent rotation or tilting.

[0047] Step 6 also includes removing excess portions of the transplant guide and resin on the occlusal and lingual surfaces of the tooth to avoid interfering with occlusion. Specifically, the tooth and transplant guide are implanted together in the oral cavity, and the resin groove of the transplant guide is filled with resin. After the transplant guide is in place and bonded to the adjacent tooth, it is then removed.

[0048] In step 6, the portion of the transplant guide plate on the buccal side of the donor tooth is retained for 6-8 weeks before being removed.

[0049] In step 3 of the above embodiment, because the shape of the donor tooth is irregular, it can only reach a relatively optimal position, and the position is moved manually and judged manually. If necessary, the donor tooth can be adjusted. Combined with the buccal and lingual position diagram, after the donor tooth is positioned, the arch of the dental arch on one side of the donor tooth should be coordinated. The donor tooth should be located within the arch of the dental arch and coordinated with the adjacent teeth.

[0050] In step 5 of the above embodiment, the transplant guide plate is a direct finished product; the digital model data is in STL format, and the STL format data is sliced ​​using 3D printing software. The 3D printer and photocurable guide plate resin are used to print the direct finished product to obtain the transplant guide plate.

[0051] In step 6 of the above embodiment, before performing autologous tooth transplantation surgery using a transplantation guide, the transplantation guide is disinfected and soaked with iodine; after the surgery, the bonding strength of the guide is checked to see if it is sufficient.

[0052] like Figure 1 and Figure 2 As shown, the integrated guide plate for tooth placement and bonding in autologous tooth transplantation surgery includes:

[0053] The buccal abutment plate 1 abuts against the donor tooth on the buccal side and the adjacent teeth on both sides of the donor tooth;

[0054] The lingual abutment plate 2 abuts against the donor tooth and the adjacent teeth on both sides of the donor tooth on the lingual side, and is fixedly connected to both ends of the buccal abutment plate 1 to form a surrounding frame A that abuts against the donor tooth and the adjacent teeth on both sides of the donor tooth on the buccal and lingual sides.

[0055] Positioning plate 3 is close to the upper end of the occlusal surface of the donor tooth and the adjacent teeth on both sides of the donor tooth, and is fixedly connected to buccal abutment plate 1 and lingual abutment plate 2 respectively to maintain the position of buccal abutment plate 1 and lingual abutment plate 2;

[0056] The enclosure frame A is provided with a first enclosure frame A1, a second enclosure frame A2 and a third enclosure frame A3, wherein the inner side of the first enclosure frame A1 is used to abut against the tooth surface of the donor tooth, and the inner sides of the second enclosure frame A2 and the third enclosure frame A3 are respectively used to abut against the tooth surfaces of the adjacent teeth on both sides.

[0057] The lower edge of the first enclosure frame A1 is close to the periodontal tissue (gingiva) of the donor tooth, and the lower edges of the second enclosure frame A2 and the third enclosure frame A3 are respectively used to approach the periodontal tissue (gingiva) of the adjacent teeth on both sides.

[0058] The lingual abutment plate 2 has a resin groove C for filling the space between the resin groove C and the donor tooth or adjacent tooth with resin material. Specifically, in this embodiment, the lingual abutment plate 2 has three resin grooves C, wherein the three resin grooves C are respectively close to the donor tooth or adjacent tooth that is close to the resin groove.

[0059] As an improvement, in addition to the resin groove C on the lingual abutment plate 2, the buccal abutment plate 1 is also provided with a resin groove C for filling the space between the resin groove C and the donor tooth or adjacent tooth with resin material. Specifically, in this embodiment, the buccal abutment plate 1 is provided with three resin grooves C, and the three resin grooves C are respectively close to the donor tooth or adjacent tooth that is close to the resin groove C.

[0060] The positioning plate 3 includes a first reinforcing rib 31 fixedly disposed on the enclosing frame A, a second reinforcing rib 32 fixedly disposed between the first reinforcing rib 31 and the buccal abutment plate 1, and a third reinforcing rib 33 fixedly disposed between the first reinforcing rib 31 and the lingual abutment plate 2. Several second reinforcing ribs 32 and three reinforcing ribs 33 can be provided. In this embodiment, two second reinforcing ribs 32 and one third reinforcing rib 33 are provided (or one second reinforcing rib 32 and two third reinforcing ribs 33 may be provided). The two second reinforcing ribs 32 and one third reinforcing rib 33 surround the donor tooth. Preferably, the two connection points between the second reinforcing rib 32 and the buccal abutment plate 1, and the one connection point between the third reinforcing rib 33 and the lingual abutment plate 2, form an equilateral triangle shape in space.

[0061] In the above embodiment, the buccal abutment plate 1, the lingual abutment plate 2, and the positioning plate 3 are arranged in parallel in space. The buccal abutment plate 1, the lingual abutment plate 2, and the positioning plate 3 are all parallel to the arc line of the dental arch. At the mesial and distal ends, the buccal abutment plate 1, the lingual abutment plate 2, and the positioning plate 3 are connected together.

[0062] When the transplant area is at a non-free end (with teeth on both sides), the resin groove is set up for bonding only by using the buccal abutment plate 1 or the lingual abutment plate 2.

[0063] When the transplant area is at the free end (the last side of the dental arch is missing a tooth, or the front or back of the transplant area is missing a tooth, and free end bonding is required), the following can be selected depending on the situation: bonding is performed by setting up a resin groove for bonding on the buccal abutment plate 1 and the lingual abutment plate 2.

[0064] When adjacent teeth in the transplant area become loose or missing, and need to be bonded and extended, the integrated guide plate can cover 4-5 tooth positions. Except for the donor tooth, the position and shape design of the guide plate for the other tooth positions are the same as those of the adjacent teeth.

[0065] like Figure 3 As shown, a gingival undercut surface B is provided on the buccal abutment plate 1 and / or the lingual abutment plate 2 at the position where it abuts against the donor tooth. The depth of the undercut is 0.25-0.5 mm. Since the resin material used in the buccal abutment plate 1 and / or the lingual abutment plate 2 has a certain elasticity, the maximum diameter end of the crown can be held by the buccal abutment plate 1 and / or the lingual abutment plate 2.

[0066] This invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims.

Claims

1. An integrated guide for tooth placement and bonding in autologous tooth transplantation surgery, characterized in that, include: The buccal abutment plate abuts against the donor tooth on the buccal side and the adjacent teeth on both sides of the donor tooth; The lingual abutment plate abuts against the donor tooth and the adjacent teeth on both sides of the donor tooth on the lingual side, and is fixedly connected to both ends of the buccal abutment plate to form a surrounding frame that abuts against the donor tooth and the adjacent teeth on both sides of the donor tooth on the buccal and lingual sides. The positioning plate is located close to the upper end of the occlusal surface of the donor tooth and the adjacent teeth on both sides of the donor tooth, and is fixedly connected to the buccal abutment plate and the lingual abutment plate respectively to maintain the position of the buccal abutment plate and the lingual abutment plate; The positioning plate includes a first reinforcing rib fixedly disposed on the enclosure frame, a second reinforcing rib fixedly disposed between the first reinforcing rib and the cheek-side abutment plate, and a third reinforcing rib fixedly disposed between the first reinforcing rib and the tongue-side abutment plate. The buccal abutment plate and / or the lingual abutment plate are provided with resin grooves for filling the space between the resin groove and the donor tooth or adjacent tooth with resin material to achieve bonding and fixation between the guide plate and the tooth. The buccal abutment plate and / or lingual abutment plate are positioned at the donor tooth location and have a gingival undercut with a depth of 0.25-0.5 mm to hold the crown of the donor tooth.

2. The integrated guide plate for tooth placement and bonding in autologous tooth transplantation surgery according to claim 1, characterized in that, The enclosure frame includes a first enclosure frame, a second enclosure frame, and a third enclosure frame. The inner surface of the first enclosure frame is used to abut against the tooth surface of the donor tooth, and the inner surfaces of the second and third enclosure frames are used to abut against the tooth surfaces of the adjacent teeth on both sides.

3. The integrated guide plate for tooth placement and bonding in autologous tooth transplantation surgery according to claim 1, characterized in that, The lower edge of the first enclosure frame is close to the periodontal tissue of the donor tooth, while the lower edges of the second and third enclosure frames are respectively used to approach the periodontal tissue of the adjacent teeth on both sides.

4. A method for fabricating an integrated guide plate for tooth placement and bonding in autologous tooth transplantation surgery, characterized in that, The integrated guide for tooth placement and bonding in autologous tooth transplantation surgery as described in any one of claims 1 to 3 comprises: Step 1: Obtain the anatomical morphology of the dental arch and alveolar bone in the oral cavity through CBCT scanning, and obtain the anatomical morphology of the outer surface of the crown and gingiva; Step 2: Fit and overlap the CBCT oral scan data to obtain a digital model of the tooth surface morphology; Step 3: Simulate the transplant surgery, move the donor tooth to the recipient area, match it with the adjacent teeth, opposing teeth and alveolar bone in the recipient area, determine the implantation position, and ensure that the occlusal relationship, proximal relationship and overbite-overjet relationship of the donor tooth in the recipient area are all in a suitable position. Step 4: Construct a digital model of the transplant guide based on the position of the donor tooth in the implantation area and the relationship between the donor tooth and the adjacent teeth on both sides; Step 5: Fabricate the transplant guide plate based on the digital model of the transplant guide plate.

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