A guide drill and a guide device for root canal treatment
By designing a guide drill and guidance device for root canal treatment, the problem of difficulty in accurately positioning the calcified root canal in the prior art is solved, and accurate cutting and unblocking of the calcified root canal is achieved, and the success rate and accuracy of root canal treatment are improved.
Patent Information
- Application Number
- CN202420492552.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The prior art is difficult to accurately locate the calcified root canal in root canal treatment, resulting in a high failure rate of calcified root canal, mainly due to complications such as lateral penetration of the root canal wall, step formation, instrument separation, and root fracture during the operation.
A guide drill and guide device for root canal treatment is designed, including a guide drill composed of a guide drill tail handle, a guide drill bar, a neck rod, a triangular drill bit rod, and a triangular drill bit bit, and a D-printed fit tooth panel printed according to the shape of the patient's tooth surface. The guide drill slide sleeve is connected to the neck rod to achieve accurate cutting and unblocking of the calcified root canal.
Through a guide drill with greater cutting force at the tip, it can effectively cut the calcified root canal, open up some calcified root canals, improve the accuracy of treatment and reduce the risk of complications.
Smart Images
Figure CN222708420U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of root canal treatment, in particular to a guide drill and a guide device for root canal treatment. Background Art
[0002] Root canal calcification is a common and difficult condition in root canal treatment. 1%-27% of teeth with root canal calcification are accompanied by clinical symptoms or imaging manifestations of pulp periapical diseases. At this time, root canal treatment or microapical surgery is required. According to statistics, the failure rate of calcified root canals is as high as 20% to 70%, mainly due to complications such as lateral penetration of the root canal wall, step formation, instrument separation, and root fracture during the operation. Therefore, how to accurately locate the calcified root canal and obtain the root canal preparation path has become a difficult problem that needs to be solved urgently in clinical practice. With the continuous development of oral digital technology, the emergence of guided endodontic treatment has provided a new way for the treatment of calcified root canals. Guided endodontic treatment combines oral scanning data with CBCT data, and can plan the pulp opening path from a three-dimensional perspective before surgery under visualization. Then, a digital guide plate is made through 3D printing technology to guide the drill to clear the calcified section of the root canal. There is no special guide drill on the market. Fiber post drills and implant pioneer drills have their defects and cannot meet the treatment requirements under the calcified root canal guide. Utility Model Content
[0003] In order to overcome the above problems, a guide drill and a guide device for root canal treatment are provided, which solve the above problems.
[0004] The utility model solves the technical problem by adopting the following technical solutions:
[0005] A guide drill and a guide device for root canal treatment, comprising a guide drill consisting of a guide drill tail handle, a guide drill polished rod, a necked rod, a triangular drill rod, and a triangular drill bit, and also comprising a 3D printed matching tooth panel printed according to the shape of the patient's tooth surface, the 3D printed matching tooth panel being fixed on a stainless steel alloy plate, and a guide drill sleeve being fixedly provided through the stainless steel alloy plate and the 3D printed matching tooth panel, the inner diameter of the guide drill sleeve being consistent with the outer diameter of the upper section of the necked rod, the 3D printed matching tooth panel being pressed and fixed on the patient's tooth surface, and then the guide drill being inserted into the guide drill sleeve to cut the calcified part of the affected part through the triangular drill bit at its front end, and the 3D printed matching tooth panel and the stainless steel alloy plate being fixed together by set screws.
[0006] Preferably, the triangular drill bit and the triangular drill bit rod are threadedly connected.
[0007] Preferably, the triangular drill bit rod and the necked rod are threadedly connected.
[0008] Preferably, the necked rod and the guide drill rod are threadedly connected.
[0009] Preferably, the guide drill polished rod and the guide drill tail shank are threadedly connected.
[0010] Preferably, the guide drill sleeve and the stainless steel alloy plate are threadedly connected.
[0011] The advantages and positive effects of the utility model are: compared with ordinary fiber post drills, the cutting force of the tip of the product is greater, which is conducive to cutting inside the calcified root canal and opening up the calcified part of the root canal; the smooth collar designed on the upper end has no cutting force on the guide plate ring, which is conducive to protecting the guide plate and improving accuracy; the overall shape is in accordance with the root canal shape, which is conducive to the treatment of calcified root canals;
[0012] The three-dimensional digital model was designed and printed. The maxillary impression of the patient was made, and the model was scanned and digitized using a three-dimensional scanner (3shapeE4, 3shape, Denmark) and saved in STL (standard triangle language) format. The edited maxillary digital model was imported into the 3shape guide design software and integrated with the CBCT data to obtain a three-dimensional image containing accurate root canal information. The multi-point registration and repositioning functions were used to fit the intraoral scanned image to extract the three-dimensional image of the uncalcified part of the root canal (3mm below the distal buccal root canal orifice to 6mm below the root canal orifice). In 3shape DentalSystem 2019 (3shape, Denmark), a cylinder with a base diameter of 1.50mm was generated through the marking and design functions, and the bottom surface of the cylinder was aligned with the apical 1 / 3 plane to simulate the root canal preparation path. The guide was designed from the occlusal surface to 3mm below the root canal orifice (the guide length was 16mm). Then, in the 3shape Dental System 2019 (3shape, Denmark) software, the positioning path was determined, the high points of the shape were connected, and the outline of the guide fixture was formed, with an average thickness of 1mm. A sleeve with an inner diameter of 1.5mm, an outer diameter of 2.6mm, and a height of 5mm was placed 0.2mm above the defective tooth and connected to the template through a support column. Using the Form3B printer (Formlabs, Inc.), the STL data with reserved holes was printed and polished for three-dimensional digital model production and polishing. After the production was completed, the calcified root canal was found under the guidance of the root canal guide. The original pilot drill in the bego implant tool box was 30mm in total length, 16mm in working length, 1.50mm in diameter, and the tip 3mm diameter transitioned from 0.5 to 0.8mm. Now a new calcified root canal guide is used to guide the drill.
[0013] Digital guide assisted root canal treatment. Fix the guide to the affected tooth and check whether it is fully in place. Use the new calcified root canal guide to accurately drill on the surface of the affected tooth. After drilling 16mm through the calcified root canal under the guidance of the guide, perform routine root canal treatment and crown restoration. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0015] Figure 1 It is a structural schematic diagram of the utility model;
[0016] Figure 2It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION
[0017] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.
[0018] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:
[0019] like Figure 1-2 As shown, a guide drill and a guiding device for root canal treatment described in the utility model include a guide drill 19 composed of a guide drill tail handle 17, a guide drill polished rod 13, a necking rod 16, a triangular drill rod 15, and a triangular drill bit 14, and also include a 3D printed matching tooth panel 11 printed according to the shape of the patient's tooth surface, the 3D printed matching tooth panel 11 is fixed on the stainless steel alloy plate 10, and a guide drill sleeve 12 is fixed through the stainless steel alloy plate 10 and the 3D printed matching tooth panel 11, the inner diameter of the guide drill sleeve 12 is consistent with the outer diameter of the upper section of the necking rod 16, the 3D printed matching tooth panel 11 is pressed and fixed on the patient's tooth surface, and then the guide drill 19 is inserted into the guide drill sleeve 12, and the calcified part of the affected part is cut by the triangular drill bit 14 at its front end, and the 3D printed matching tooth panel 11 and the stainless steel alloy plate 10 are fixed together by a set screw 18.
[0020] Preferably, the triangular drill bit 14 and the triangular drill bit rod 15 are threadedly connected.
[0021] Preferably, the triangular drill bit rod 15 and the necked rod 16 are threadedly connected.
[0022] Preferably, the necked rod 16 and the guide polishing rod 13 are threadedly connected.
[0023] Preferably, the guide drill polished rod 13 and the guide drill tail shank 17 are threadedly connected.
[0024] Preferably, the guide drill sleeve 12 and the stainless steel alloy plate 10 are threadedly connected.
[0025] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.
Claims
1. A guide drill for root canal treatment, characterized in that: The invention comprises a guide drill (19) composed of a guide drill tail handle (17), a guide drill polished rod (13), a necked rod (16), a triangular drill head rod (15), and a triangular drill head (14), and also comprises a 3D printed matching tooth panel (11) printed according to the shape of the patient's tooth surface, wherein the 3D printed matching tooth panel (11) is fixed on a stainless steel alloy plate (10), and a guide drill sleeve (12) is fixedly provided through the stainless steel alloy plate (10) and the 3D printed matching tooth panel (11). 12), the inner diameter of the guide drill sleeve (12) is consistent with the outer diameter of the upper section of the necking rod (16), the 3D printed matching tooth panel (11) is pressed and fixed on the patient's tooth surface, and then the guide drill (19) is inserted into the guide drill sleeve (12) to cut the calcified part of the affected area through the triangular drill bit (14) at its front end, and the 3D printed matching tooth panel (11) and the stainless steel alloy plate (10) are fixed together by a set screw (18).
2. A guide drill for root canal treatment according to claim 1, characterized in that: The triangular drill bit (14) and the triangular drill bit rod (15) are threadedly connected.
3. A guide drill for root canal treatment according to claim 2, characterized in that: The triangular drill bit rod (15) and the necked rod (16) are threadedly connected.
4. A guide drill for root canal treatment according to claim 3, characterized in that: The necked rod (16) and the guide polishing rod (13) are threadedly connected.
5. A guide drill for root canal treatment according to claim 4, characterized in that: The guide drill polished rod (13) and the guide drill tail shank (17) are threadedly connected.
6. A guide drill for root canal treatment according to claim 5, characterized in that: The guide drill sleeve (12) and the stainless steel alloy plate (10) are threadedly connected.