A full-course guide plate for apical surgery, a manufacturing method and application thereof

Abstract

The present invention relates to the field of medical technology, and specifically to a full-length guide plate for apical surgery, a manufacturing method and its application. The full-length guide plate includes a retaining portion, a connecting portion and a guiding portion. The retaining portion fits the crown and gingival part of the tooth. One end of the connecting portion is connected to the retaining portion and the other end is connected to the guiding portion. The guiding portion corresponds to the root apex of the tooth. The guiding portion includes a guiding window for guiding the range of bone windowing, a guiding edge for limiting the range of flap opening, and a pulling portion for guiding and limiting soft tissue. The present invention can achieve the effects of preoperative digital simulation of soft tissue flap opening, bone window opening, and apical resection in surgery, and reduce technical sensitivity. The full-length guide plate is used to accurately determine the length and angle of the apical resection, accurately locate the resection plane, determine the position and size of the bone window opening, and determine the flap opening range on the basis of this bone window opening, so as to achieve the purpose of minimally invasive, personalized flap opening and bone window opening, and refined resection of the root apex, retain healthy tissue to the greatest extent, and reduce intraoperative and postoperative complications.

Description

Technical Field

[0001] The invention relates to the technical field of medical supplies, and in particular to a full-course guide plate for apical surgery, a manufacturing method and an application thereof. Background Art

[0002] Root canal treatment is a common method for treating pulp disease and periapical disease. However, when periapical lesions persist, periapical surgery is often required to promote healing of the lesions. Traditional periapical surgery steps include: flap incision, bone removal and window opening, periapical scaling, excision of infected root apex, reverse preparation, reverse filling, and suturing.

[0003] Traditional apical surgery has the following difficulties:

[0004] 1. It is difficult to accurately locate the position and scope of the apical lesion, especially when the cortical bone in the apical area is intact. To determine the position and scope of the apical lesion, one can only rely on the anatomical shape of the tooth root and preoperative imaging data. First, remove the bone near the apex until the root surface is exposed, and then remove the bone along the root until the apical lesion is exposed. Such an operation is limited by the physician's experience, surgical field of view and other conditions. The technology is highly sensitive and can easily expand bone defects, delay lesion healing, and may even damage the roots of the affected teeth and adjacent teeth, causing greater trauma to the patient.

[0005] 2. It is difficult to accurately control the length and angle of apical resection. In clinical operations, due to the limitations of the position of the affected tooth, the direction of the root, the surgical field of view and other conditions, certain errors are often caused. Although smaller errors are acceptable, larger errors will lead to root resection deviations, affecting infection control and tooth stability, and may cause damage to adjacent important structures, such as adjacent tooth damage, maxillary sinus perforation, nerve damage, etc.

[0006] 3. The soft tissue trauma is large, and the patient has severe postoperative reactions, which affects the postoperative appearance. In traditional apical surgery, because it is difficult to determine the location and range of the apical lesion, in order to obtain a good surgical field of view and operating space, it is conventional to extend 1 to 2 teeth mesiodistal to the affected tooth to make a full-thickness mucoperiosteal flap including the affected tooth and adjacent teeth. This will cause extensive soft tissue damage, prolong the healing time, and cause more obvious swelling and pain in patients after surgery, and even lead to problems such as gingival recession, tissue defects and scar formation.

[0007] Therefore, there are still many areas that need to be improved in the existing root canal treatment schemes through surgical operations, and a more reasonable technical solution needs to be proposed to address the deficiencies in the existing technology. Summary of the invention

[0008] In order to solve the defects of the prior art mentioned above, the present invention provides a full-range guide plate for apical surgery, a manufacturing method and application thereof.

[0009] In order to achieve the above object, the technical solution specifically adopted by the present invention is:

[0010] A full-range guide plate for apical surgery includes a retaining portion, a connecting portion and a guiding portion. The retaining portion fits the tooth crown and the gum portion, one end of the connecting portion is connected to the retaining portion and the other end is connected to the guiding portion, the guiding portion corresponds to the apical region of the tooth, and the guiding portion includes a guiding window for guiding the range of bone opening, a guiding edge for limiting the range of flap opening, and a pulling portion for guiding and limiting soft tissue.

[0011] The above disclosed full-course guide is used in apical surgery of root canal treatment. It is placed in the oral cavity and the retaining part is closely fitted with the crown and gums, so that the guide part accurately indicates the surgical site, and the patient site is found within the range of the guide window and the surgery is performed. This can improve the accuracy and reliability of the surgery, reduce the damage caused by the surgery and the pain of the patient, and enhance the treatment effect.

[0012] Furthermore, the structure of the full-length guide plate used in the present invention is not limited to a single one, and an optimization is made here and one feasible option is given: the retaining portion, the connecting portion and the guiding portion are integrally formed. When such a solution is adopted, the structure of the full-length guide plate is simpler, the manufacturing process is simplified, the use is convenient, and the overall strength is higher.

[0013] Furthermore, in order to improve the positioning reliability of the full-length guide plate during specific use, an optimization is made here and the following feasible option is given: the retaining part is matched with at least two adjacent teeth adjacent to the diseased tooth, and the retaining part includes a groove part for covering the crown of the tooth and a fitting part for fitting the gums. When such a solution is adopted, the full-length guide plate can be worn by only matching the retaining part with the corresponding teeth and installing it on the teeth.

[0014] Furthermore, the structure of the pulling part can be constructed in various forms, and an optimization is made here and one feasible option is given: the pulling part is an arc-shaped plate structure. When such a solution is adopted, the pulling part is ergonomic and bends toward the outside of the oral cavity, avoiding damage to soft tissues while pulling.

[0015] The above content discloses a full-length guide plate. The present invention also discloses a method for manufacturing the full-length guide plate, which is now specifically described:

[0016] A method for manufacturing a full-length guide plate for apical surgery, used for manufacturing the full-length guide plate described above, comprising:

[0017] Acquire DICOM data of oral jaws and teeth and convert them into editable 3D data format, acquire 3D data of oral soft and hard tissue surfaces, and fit the 3D data of oral hard tissues and the 3D data of oral soft and hard tissue surfaces to establish a 3D model;

[0018] Determine the apical resection plane from the established three-dimensional model, determine the location and range of the apical lesion, determine the location and size of the bone window, and on this basis, expand a certain distance outward as the soft tissue flap range, and extend the soft tissue traction part from the edge of the guide plate close to the root, and then determine the structure of the guide part of the full-length guide plate;

[0019] A connecting part is arranged on the established three-dimensional model, so that the connecting part is respectively connected to the retaining part and the guiding part, thereby obtaining an overall model of the full-course guide plate;

[0020] The overall model of the full-course guide plate is manufactured into a finished product by 3D printing or cutting.

[0021] The manufacturing method disclosed above uses digitalized precise modeling to achieve a higher fitting effect and auxiliary effect for the entire guide plate production process.

[0022] Furthermore, in the manufacturing method disclosed in the present invention, when fitting the 3D data of oral hard tissue and the 3D data of oral soft and hard tissue surfaces, at least CAD software is used to fit the data to establish a three-dimensional model.

[0023] Furthermore, when determining the position of the guide portion and the bone window, the guide window completely covers the tooth root apex and the distance between the surgical incision position allowed in the guide window and the tooth root apex is greater than or equal to 3 mm.

[0024] The above is the structure and manufacturing method of the full-length guide plate. The full-length guide plate disclosed in the present invention is applied to apical surgery, specifically:

[0025] The invention discloses an application of a full-range guide plate for apical surgery, which is used in tooth root canal treatment surgery to limit the bone window position for root canal treatment, limit the surgical incision position, and assist in soft tissue flap opening and traction fixation.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention can achieve good preoperative digital simulation of soft tissue flap, bone window, and apical resection effects during surgery through the structure of the full-length guide plate, and reduce technical sensitivity. The full-length guide plate is used to accurately determine the length and angle of the apical resection, accurately locate the resection plane, and determine the position and size of the bone window in combination with the position and range of the apical lesion area. On the basis of this bone window, the flap range is determined to achieve the purpose of minimally invasive, personalized flap and bone window, and refined resection of the apex, retain healthy tissue to the greatest extent, and reduce intraoperative and postoperative complications. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only represent some embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a structural schematic diagram of the full-course guide plate of the present invention.

[0030] Figure 2 It is a schematic diagram of the present invention after the full guide plate is worn.

[0031] Figure 3 The figure is a schematic diagram of the steps of manufacturing the full-course guide plate of the present invention.

[0032] In the above drawings, the meanings of the various marks are: 1. retention part; 2. connection part; 3. guide part; 4. guide window; 5. guide edge; 6. traction part; 7. fitting part; 8. gums. DETAILED DESCRIPTION

[0033] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0034] It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. The specific structures and functional details disclosed herein are only used to describe the exemplary embodiments of the present invention. However, the present invention can be embodied in many alternative forms, and it should not be understood that the present invention is limited to the embodiments set forth herein.

[0035] Example 1

[0036] In view of the fact that the existing apical treatment methods are not perfect and may increase the damage and pain of patients, this embodiment is optimized to solve the problems existing in the prior art.

[0037] like Figure 1 , Figure 2As shown, this embodiment discloses a full-range guide plate for apical surgery, including a retaining portion 1, a connecting portion 2 and a guiding portion 3, wherein the retaining portion 1 is fitted with the crown and the gum 8, one end of the connecting portion 2 is connected to the retaining portion 1 and the other end is connected to the guiding portion 3, the guiding portion 3 corresponds to the apical region of the tooth, and the guiding portion 3 includes a guiding window 4 for guiding the range of bone opening, a guiding edge 5 for limiting the range of flap opening, and a pulling portion 6 for guiding and limiting soft tissue.

[0038] Preferably, the full-length guide plate is made of transparent medical plastic.

[0039] The above disclosed full-course guide is used in apical surgery of root canal treatment. It is placed in the oral cavity and the retaining part 1 is closely matched with the crown and gum 8, so that the guide part 3 accurately indicates the surgical site, and the patient site is found within the range of the guide window 4 and the surgery is performed. In this way, the accuracy and reliability of the surgery can be improved, the damage caused by the surgery and the pain of the patient can be reduced, and the treatment effect can be enhanced.

[0040] The structure of the full-length guide plate used in this embodiment is not limited to a single one. This embodiment optimizes and adopts one of the feasible options: the retaining portion 1, the connecting portion 2 and the guiding portion 3 are integrally formed. When such a solution is adopted, the structure of the full-length guide plate is more concise, the manufacturing process is simplified, the use is convenient, and the overall strength is higher.

[0041] In order to improve the positioning reliability of the full-length guide plate during specific use, this embodiment is optimized and adopts the following feasible option: the retaining part 1 corresponds to at least two adjacent teeth adjacent to the diseased tooth, and the retaining part 1 includes a groove part for covering the crown of the tooth and a fitting part 7 for fitting the gums 8. When such a solution is adopted, the full-length guide plate can be worn by only matching the retaining part 1 with the corresponding teeth and installing it on the teeth.

[0042] Preferably, the structure of the pulling part 6 can be constructed in various forms. This embodiment optimizes and adopts one of the feasible options: the pulling part 6 is an arc-shaped plate structure. When such a solution is adopted, the pulling part 6 is ergonomic and bends toward the outside of the oral cavity, avoiding damage to soft tissues while pulling.

[0043] Example 2

[0044] The content of the above embodiment 1 discloses a full-length guide plate. This embodiment also discloses a method for manufacturing the full-length guide plate, which is now specifically described:

[0045] like Figure 3 As shown, this embodiment discloses a method for manufacturing a full-length guide plate for apical surgery, which is used to manufacture the full-length guide plate described in the above content, comprising:

[0046] S01: Obtain DICOM data of oral jaws and teeth and convert them into editable 3D data format, and simultaneously obtain 3D data of oral soft and hard tissue surfaces, and fit the 3D data of oral hard tissues and the 3D data of oral soft and hard tissue surfaces to establish a 3D model;

[0047] S02: Determine the apical resection plane based on the established three-dimensional model, determine the location and range of the apical lesion, determine the location and size of the bone window, and on this basis, expand a certain distance outward as the soft tissue flap range, and extend the soft tissue traction part from the edge of the guide plate close to the tooth root, and then determine the structure of the guide part of the full-length guide plate;

[0048] Preferably, DICOM data of the patient's oral jaw and teeth are obtained through CBCT scanning and converted into an editable 3D data format (such as STL format), and 3D data of the patient's oral soft and hard tissue surfaces are obtained through a digital oral scanner.

[0049] S03: setting a connection part on the established three-dimensional model, so that the connection part is respectively connected to the retaining part and the guiding part, thereby obtaining an overall model of the full-course guide plate;

[0050] S04: The overall model of the full-course guide plate is manufactured into a finished product by 3D printing or cutting.

[0051] The manufacturing method disclosed above uses digitalized precise modeling to achieve a higher fitting effect and auxiliary effect for the entire guide plate production process.

[0052] In the manufacturing method disclosed in this embodiment, when fitting the 3D data of oral hard tissue and the 3D data of oral soft and hard tissue surfaces, at least CAD software is used to fit the data to establish a three-dimensional model.

[0053] Preferably, when determining the position of the guide portion and the bone window, the guide window completely covers the tooth root apex and the distance between the surgical incision position allowed in the guide window and the tooth root apex is greater than or equal to 3 mm.

[0054] Example 3

[0055] The above embodiments 1 and 2 respectively disclose the structure and manufacturing method of the full-length guide plate. The full-length guide plate disclosed in this embodiment is applied to apical surgery, specifically:

[0056] The invention discloses an application of a full-range guide plate for apical surgery, which is used in tooth root canal treatment surgery to limit the bone window position for root canal treatment, limit the surgical incision position, and assist in soft tissue flap opening and traction fixation.

[0057] When using this full-length guide for surgery, the following method can be used:

[0058] S1. Try on the full-length guide for apical surgery. After confirming that it is in place, make a flap incision according to the guidance of the guide. After the incision is made, remove the guide and perform soft tissue flap. After the flap is completed, put the guide back in and use the soft tissue traction part to fix the surgical valve.

[0059] S2. Following the guidance of the guide plate, perform bone windowing and simultaneously remove the apical 3 mm and apical lesions, completely remove the bone block, the excised apex, and the diseased tissue.

[0060] S3. Routinely perform periapical scraping, retrograde preparation and retrograde filling on the affected teeth.

[0061] S4. Clean the removed bone fragments and transplant them in situ, remove the surgical guide, and close the wound with routine procedures.

[0062] The above are the implementation methods listed in this embodiment, but this embodiment is not limited to the above optional implementation methods. Those skilled in the art can arbitrarily combine the above methods to obtain other various implementation methods. Anyone can derive other various forms of implementation methods under the inspiration of this embodiment. The above specific implementation methods should not be understood as limiting the scope of protection of this embodiment. The scope of protection of this embodiment shall be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. A method for manufacturing a full-range guide plate for apical surgery, used for manufacturing a full-range guide plate for apical surgery, comprising a retaining portion (1), a connecting portion (2) and a guiding portion (3), wherein the retaining portion (1) is in contact with the tooth crown and the gingiva (8), one end of the connecting portion (2) is connected to the retaining portion (1) and the other end is connected to the guiding portion (3), the guiding portion (3) corresponds to the apical region of the tooth, and the guiding portion (3) comprises a guiding window (4) for guiding the range of bone window opening, a guiding edge (5) for limiting the range of flap opening, and a pulling portion (6) for guiding and limiting soft tissue; The retaining portion (1), the connecting portion (2) and the guiding portion (3) are integrally formed; The retaining portion (1) corresponds to and cooperates with at least two adjacent teeth adjacent to the diseased tooth, and the retaining portion (1) comprises a groove portion for covering the tooth crown and a fitting portion (7) for fitting the gums (8); The pulling portion (6) is an arc-shaped plate structure; It is characterized in that include: Acquire DICOM data of oral jaws and teeth and convert them into editable 3D data format, acquire 3D data of oral soft and hard tissue surfaces, and fit the 3D data of oral hard tissues and the 3D data of oral soft and hard tissue surfaces to establish a 3D model; Determine the apical resection plane from the established three-dimensional model, determine the location and range of the apical lesion, determine the location and size of the bone window, and on this basis, expand a certain distance outward as the soft tissue flap range, and extend the soft tissue traction part from the edge of the guide plate close to the root, and then determine the structure of the guide part of the full-length guide plate; A connecting part is arranged on the established three-dimensional model, so that the connecting part is respectively connected to the retaining part and the guiding part, thereby obtaining an overall model of the full-course guide plate; The overall model of the full-course guide plate is manufactured into a finished product by 3D printing or cutting.

2. The method for manufacturing a full-length guide plate according to claim 1, characterized in that: When fitting the 3D data of oral hard tissue and the 3D data of oral soft and hard tissue surfaces, at least CAD software is used to fit the data to establish a three-dimensional model.

3. The method for manufacturing a full-length guide plate according to claim 1, characterized in that: When determining the position of the guide portion and the bone window, the guide window should completely cover the tooth root apex and the distance between the surgical incision position allowed in the guide window and the tooth root apex should be greater than or equal to 3 mm.

Images