Three-point positioning dental positioning guide and three-point positioning modeling method thereof

Abstract

The present application provides a kind of three-point positioning dental positioning guide and its three-point positioning modeling method, which is connected by a first plate and a second plate, wherein a first positioning hole is defined on the first plate, a second positioning hole is defined on the second plate, and a third positioning hole is defined at the hinge of the first plate and the second plate, and the extension directions of the first positioning hole, the second positioning hole and the third positioning hole are parallel to each other, a positioning column can be guided through the first positioning hole, the second positioning hole and the third positioning hole, and a three-point positioning is formed, which can be used as the basis for modeling to accurately reproduce an oral dental model.

Description

Technical Field

[0001] This invention relates to dental surgical guides, and in particular to a three-point positioning dental guide that can be flexibly adjusted to meet various clinical needs, and its three-point positioning modeling method. Background Technology

[0002] Traditional dental implantation methods rely primarily on the dentist's experience to determine the location, depth, and force of the drill hole. However, even with extensive experience, it is difficult for a dentist to make 100% accurate judgments when performing tasks such as jawbone measurement, bone positioning, and parallelism calibration, which carries a certain degree of risk.

[0003] Therefore, current dental implant surgery involves pre-operative planning based on X-rays or computed tomography (CT) scans. An impression is taken to obtain the shape of the edentulous area after the patient bites down. A plaster mold is then used to create a dental model, from which a surgical guide and prosthesis are fabricated. This surgical guide is used to ensure the accuracy of the subsequent implant surgery. However, creating a dental model using plaster molds is a complex and error-prone process. Therefore, the surgical guide based on this model cannot accurately mark the actual surgical location. Furthermore, the prosthesis made from this model requires continuous post-operative adjustments by the dentist during the implantation process to meet the required specifications. This process is not only cumbersome and time-consuming, but excessive modifications can also significantly reduce the prosthesis's strength. Especially for patients with excessive tooth loss or complete edentulism, the dental model can only be made based on their gums. However, since the gums are soft tissue, they cannot provide a stable positioning base. Therefore, the difference between the dental model and the actual state of the patient's mouth will be greater. This will also cause the surgical guide device to fail to accurately correspond with the actual gums in the patient's mouth. Furthermore, if there are many implants and more drill holes need to be made in the surgical guide device, the cumulative error will cause deviations and misalignments in the drilling positions, leading to unnecessary medical disputes later on.

[0004] Therefore, how to solve the above problems is the primary issue that this invention aims to address. Summary of the Invention

[0005] The main objective of this invention is to provide a three-point positioning dental guide and its three-point positioning modeling method, which has the effect of being flexibly adjustable to meet various clinical needs, and further ensures the accuracy of its dental model.

[0006] To achieve the aforementioned objectives, the present invention provides a three-point positioning dental guide, comprising:

[0007] A first plate, which is plate-shaped and has a first plate body, and a first groove is formed along the first plate body. A first sliding member is slidably disposed on the first plate body. The first sliding member has a first through hole corresponding to the position of the first groove, so that the first through hole and the first groove can form a first positioning hole. One end of the first plate body is defined to form a first end, and a first through hole is formed at the first end.

[0008] A second plate, in the form of a plate, has a second plate body and a second groove formed along the second plate body. A second sliding member is slidably disposed on the second plate body. The second sliding member has a second through hole corresponding to the position of the second groove, so that the second through hole and the second groove can form a second positioning hole. One end of the second plate body is defined to form a second end, and a second through hole is formed at the second end. The first plate is pivotally connected to the second end of the second plate with its first end, so that the first through hole and the second through hole overlap to form a third positioning hole. The extension directions of the first positioning hole, the second positioning hole and the third positioning hole are parallel to each other.

[0009] As a preferred embodiment of the above technical solution, the first sliding member has a sleeve opening perpendicular to the opening direction of the first through hole, and the first sliding member is slidably fitted onto the first plate with its sleeve opening; the second sliding member has a sleeve opening perpendicular to the opening direction of the second through hole, and the second sliding member is slidably fitted onto the second plate with its sleeve opening.

[0010] As a preferred embodiment of the above technical solution, preferably, a groove is laterally formed at the second end of the second plate, the groove being perpendicular to the direction of the second through hole, so that the second end has two sidewalls that are parallel and spaced apart and simultaneously pass through the second through hole, the first plate is inserted into the groove between the two sidewalls at its first end, so that the first through hole and the second through hole overlap, and a hollow ring-shaped pivot is inserted into the first through hole and the second through hole to pivotally connect the first plate and the second plate, and the pivot surrounds the third positioning hole in the first through hole and the second through hole.

[0011] As a preferred embodiment of the above technical solution, preferably, the second plate body and its second end have a curved segment, so that the first plate is generally U-shaped after its first end is pivotally connected to the second end of the second plate.

[0012] As a preferred embodiment of the above technical solution, a distance scale is provided on the first plate and the second plate to determine the position of the first slider and the second slider after sliding.

[0013] As a preferred embodiment of the above technical solution, preferably, an angle scale distributed around the circumference of the second perforation is engraved or printed on the end face of the second end to determine the relative pivot angle between the first plate and the second plate.

[0014] Furthermore, the present invention provides a three-point positioning modeling method, the steps of which include:

[0015] a. Obtain an oral cavity image of a patient, and determine the location of a first positioning point, a second positioning point, and a third positioning point within the patient's oral cavity based on the oral cavity image data;

[0016] b. Align the third positioning hole of the dental positioning guide with the first positioning point in the patient's oral cavity, then drill a hole in the alveolar bone at the first positioning point through the third positioning hole, and then implant a first positioning post into the first positioning point in the patient's alveolar bone.

[0017] c. By sliding the first slider and the second slider, and adjusting the pivot angle of the first plate and the second plate, the first positioning hole and the second positioning hole can be aligned with the second positioning point and the third positioning point in the patient's oral cavity, respectively. Then, alveolar bone is drilled through the first positioning hole at the second positioning point and through the second positioning hole at the third positioning point. A second positioning post and a third positioning post are then implanted into the second positioning point and the third positioning point in the patient's alveolar bone, respectively, so that the first positioning post, the second positioning post and the third positioning post can form a three-point positioning reference.

[0018] d. Using the three-point positioning basis formed by the first positioning post, the second positioning post and the third positioning post as the modeling basis, a dental model is made.

[0019] As a preferred embodiment of the above technical solution, preferably, the first positioning post, the second positioning post, and the third positioning post are each composed of an artificial implant. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is an exploded view of the present invention.

[0023] Figure 3 This is a structural schematic diagram of a preferred embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram illustrating the storage of the present invention.

[0025] Figure 5 This is a flowchart illustrating the three-point positioning modeling method of the present invention.

[0026] Figures 6-9 This is a schematic diagram illustrating the operation of the three-point positioning and modeling method of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] First, please refer to Figures 1-2 As shown, a three-point positioning dental positioning guide provided by the present invention is mainly composed of a first plate 11 and a second plate 21 pivotally connected to each other, wherein:

[0029] The first plate 11 is plate-shaped and has a first plate body 12. A first groove 13 is formed along the long axis of the first plate body 12. A first sliding member 14 is slidably disposed on the first plate body 12. The first sliding member 14 has a first through hole 15 corresponding to the position of the first groove 13, so that the first through hole 15 and the first groove 13 can mutually form a first positioning hole 16. One end of the first plate body 12 is defined as a first end portion 121, and a first through hole 17 is formed on the first end portion 121. In this embodiment, the first sliding member 14 has a fitting opening 141 perpendicular to the opening direction of the first through hole 15, so that the first sliding member 14 can be fitted onto the first plate body 12 through its fitting opening 141. A first pin 122 is inserted at the other end of the first plate body 12 (i.e., the end opposite to the first end portion 121) to prevent the first sliding member 14 from detaching from the first plate body 12.

[0030] The second plate 21 is plate-shaped and has a second plate body 22. A second groove 23 is formed along the long axis of the second plate body 22. A second sliding member 24 is slidably disposed on the second plate body 22. The second sliding member 24 has a second through hole 25 corresponding to the position of the second groove 23, so that the second through hole 25 and the second groove 23 can form a second positioning hole 26. One end of the second plate body 22 is defined to form a second end 221, and a second through hole 27 is formed on the second end 221. The first plate 11 is pivotally connected to the second end 221 of the second plate 21 with its first end 121, so that the first through hole 17 and the second through hole 27 overlap. In this embodiment, the second sliding member 24 also has a fitting opening 241 perpendicular to the opening direction of the second through hole 25, so that the second sliding member 24 can be fitted onto the second plate body 22 through its fitting opening 241. A second pin 222 is inserted at the other end of the second plate body 22 (i.e., the end opposite to the second end 221) to prevent the second sliding member 24 from detaching from the second plate body 22. Furthermore, there is a curved section 222 between the second plate body 22 and its second end 221. In addition, a groove 29 is laterally opened at the middle position of the second end 221 of the second plate body 22. The opening direction of the groove 29 is perpendicular to the opening direction of the second through hole 27, so that the second end 221 forms two side walls 2211 that are parallel and spaced apart and pass through the second through hole 27. The first plate 11 uses its first end 121 to... It should be inserted into the groove 29 between the two side walls 2211, so that the first through hole 17 and the second through hole 27 overlap, and a hollow ring-shaped pivot 31 is axially inserted into the first through hole 17 and the second through hole 27 to pivotally connect the first plate 11 and the second plate 21. At the same time, the pivot 31 can encircle a third positioning hole 28 in the first through hole 17 and the second through hole 27. Due to the design of the curved section 222, the first plate 11 can be roughly "U" shaped after its first end 121 and the second end 221 of the second plate 21 are pivotally connected, which is similar to the shape of the oral cavity and jaw curve. It can pivot relatively parallel to each other with the pivot 31 as the axis. The extension directions of the first positioning hole 16, the second positioning hole 26 and the third positioning hole 28 are arranged parallel to each other, thereby constituting the three-point positioning dental positioning guide provided by the present invention.

[0031] Preferably, the first sliding member 14 and the second sliding member 24 can be connected by a near-tight fit, or additionally locked by a bolt (not shown) to limit their position after sliding adjustment. Furthermore, as shown in Figure 3, a distance scale 32 can be engraved or printed on the first plate 12 and the second plate 22 respectively, allowing the dentist to accurately adjust and determine the position of the first sliding member 14 and the second sliding member 24 after sliding; and an angle scale 33 distributed circumferentially along the second through hole 27 can also be engraved or printed on the end face of the second end 221, allowing the dentist to accurately adjust and determine the relative pivot angle of the first plate 11 and the second plate 21.

[0032] In practical applications, such as Figure 4 As shown, the first plate 11 and the second plate 21 can be housed in a storage box 50, and the storage box 50 also houses a first sliding member 14, a second sliding member 24, a shaft member 31 with various aperture specifications, and a variety of positioning posts 40 with relative outer diameter specifications, thereby forming a set assembly.

[0033] In addition, see accompanying references Figure 5 As shown, the present invention further provides a positioning modeling method using the aforementioned three-point positioning dental positioning guide, the steps of which include:

[0034] a. Obtaining oral cavity images of a patient, which can be achieved through X-ray or CT computed tomography scans, and such... Figure 6 As shown, the oral imaging data can be used to determine the location of a first positioning point C1, a second positioning point C2, and a third positioning point C3 in the patient's oral cavity, and the oral imaging data includes at least information on the shape of the dental arch, the location of missing teeth, and the alveolar bone.

[0035] b. Align the third positioning hole 28 of the dental positioning guide with the first positioning point C1 inside the patient's mouth (e.g., ...). Figure 7 (As shown), then after drilling the alveolar bone at the first positioning point C1 through the third positioning hole 28, a first positioning post 41 is implanted into the first positioning point C1 of the patient's alveolar bone.

[0036] c. Then as Figure 8As shown, by sliding the first sliding member 14 and the second sliding member 24, and adjusting the pivot angle of the first plate 11 and the second plate 21, the first positioning hole 16 and the second positioning hole 26 can be aligned with the second positioning point C2 and the third positioning point C3 in the patient's oral cavity, respectively. Then, alveolar bone is drilled through the first positioning hole 16 to the second positioning point C2, and alveolar bone is drilled through the second positioning hole 26 to the third positioning point C3. Then, a second positioning post 42 and a third positioning post 43 are implanted into the second positioning point C2 and the third positioning point C3 in the patient's alveolar bone, respectively, so that the first positioning post 41, the second positioning post 42 and the third positioning post 43 can form a three-point positioning reference. Among them, the first positioning post 41, the second positioning post 42 and the third positioning post 43 can be directly composed of an artificial implant.

[0037] d. Finally, as Figure 9 As shown, using the three-point positioning reference formed by the first positioning post 41, the second positioning post 42, and the third positioning post 43 as the modeling basis, an oral dental model (not shown in the figure) can be reproduced. After obtaining its occlusal record, the corresponding surgical guide device and its prosthesis can be accurately manufactured. Taking patients with many missing teeth or no teeth as an example, the positioning modeling method provided by this invention can be used to first implant three positioning or artificial implants in the oral cavity. Then, using the three-point positioning reference as the modeling basis, an oral dental model can be reproduced. Based on this oral dental model and its occlusal record, the surgical guide device and prosthesis required for subsequent dental implant surgery can be directly and accurately manufactured, ensuring its accuracy.

[0038] The three-point positioning dental positioning guide and its positioning modeling method provided by this invention have the following advantages:

[0039] 1. The three-point positioning dental positioning guide provided by the present invention uses a hollow pivot member 31 as the reference position of the first positioning point. By sliding the first sliding member 14 and the second sliding member 24, and adjusting the pivot angle of the first plate 11 and the second plate 21, the reference position of the three-point positioning can be accurately located. Furthermore, since the positions of the first sliding member 14 and the second sliding member 24 can be adjusted by sliding, and the first plate 11 and the second plate 21 have the characteristic of being able to pivot relative to each other, it can be flexibly adjusted to meet various clinical needs.

[0040] 2. The three-point positioning dental guide provided by the present invention utilizes an overlapping method to form its first positioning hole 16, second positioning hole 26 and third positioning hole 28 respectively, thus effectively reducing the volume of its dental guide and making it easier to insert into the patient's oral cavity, thus having the advantage of convenient operation.

[0041] 3. The three-point positioning dental positioning guide provided by the present invention ensures the parallelism of its subsequent drilling direction by having the first positioning hole 16, the second positioning hole 26 and the third positioning hole 28 arranged in parallel directions.

[0042] 4. The three-point positioning modeling method used in this invention utilizes a three-point positioning dental positioning guide, which can first implant three positioning posts on the patient's alveolar bone or directly implant artificial implants, thus providing an extremely stable positioning foundation to effectively reduce the error of the subsequently made dental model.

[0043] The three-point positioning modeling method used in this invention utilizes the three-point positioning basis as the modeling foundation to reproduce the oral dental model. Based on this oral dental model and occlusion record, the surgical guide device and denture required for subsequent dental implant surgery can be directly and accurately manufactured, which can significantly reduce the time required for subsequent dental implantation and effectively avoid unnecessary medical disputes.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A three-point positioning dental positioning guide, characterized in that, It contains: A first plate, which is plate-shaped and has a first plate body, and a first groove is formed along the first plate body. A first sliding member is slidably disposed on the first plate body. The first sliding member has a first through hole corresponding to the position of the first groove, so that the first through hole and the first groove form a first positioning hole. One end of the first plate body is defined to form a first end, and a first through hole is formed at the first end. A second plate, in the form of a plate, has a second plate body and a second groove formed along the second plate body. A second sliding member is slidably disposed on the second plate body. The second sliding member has a second through hole corresponding to the position of the second groove, so that the second through hole and the second groove form a second positioning hole. One end of the second plate body is defined to form a second end, and a second through hole is formed at the second end. The first plate is pivotally connected to the second end of the second plate with its first end, so that the first through hole and the second through hole overlap to form a third positioning hole. The extension directions of the first positioning hole, the second positioning hole and the third positioning hole are parallel to each other.

2. The three-point positioning dental positioning guide according to claim 1, characterized in that, The first sliding member has a fitting opening perpendicular to the opening direction of the first through hole, and the first sliding member is slidably fitted onto the first plate with its fitting opening. The second sliding member has a fitting opening perpendicular to the opening direction of the second through hole, and the second sliding member is slidably fitted onto the second plate with its fitting opening.

3. The three-point positioning dental positioning guide according to claim 1, characterized in that, The second plate has a groove on its second end, the groove being perpendicular to the second through hole, so that the second end has two sidewalls that are parallel and spaced apart and pass through the second through hole. The first plate is inserted into the groove between the two sidewalls with its first end, so that the first through hole and the second through hole overlap. A hollow ring-shaped pivot is inserted into the first through hole and the second through hole to pivotally connect the first plate and the second plate, and the pivot surrounds the third positioning hole in the first through hole and the second through hole.

4. The three-point positioning dental positioning guide according to claim 1, characterized in that, The second plate has a curved section between its second end and the first plate, so that the first plate forms a "U" shape after its first end is pivotally connected to the second end of the second plate.

5. The three-point positioning dental positioning guide according to claim 1, characterized in that, A distance scale is provided on the first plate and the second plate to determine the position of the first slider and the second slider after sliding.

6. The three-point positioning dental positioning guide according to claim 1, characterized in that, An angle scale is engraved or printed on the end face of the second end, which is distributed circumferentially along the second perforation, to determine the relative pivot angle between the first plate and the second plate.

7. A three-point positioning modeling method using the three-point positioning dental positioning guide as described in claim 1, characterized in that, It includes the following steps: a. Obtain an oral cavity image of a patient, and determine the location of a first positioning point, a second positioning point, and a third positioning point within the patient's oral cavity based on the oral cavity image data; b. Align the third positioning hole of the dental positioning guide with the first positioning point in the patient's oral cavity, then drill a hole in the alveolar bone at the first positioning point through the third positioning hole, and then implant a first positioning post into the first positioning point in the patient's alveolar bone. c. By sliding the first slider and the second slider, and adjusting the pivot angle of the first plate and the second plate, the first positioning hole and the second positioning hole can be aligned with the second positioning point and the third positioning point in the patient's oral cavity, respectively. Then, an alveolar bone hole is drilled through the first positioning hole at the second positioning point and the alveolar bone hole is drilled through the second positioning hole at the third positioning point. Then, a second positioning post and a third positioning post are respectively implanted into the second positioning point and the third positioning point in the patient's alveolar bone, so that the first positioning post, the second positioning post and the third positioning post constitute a three-point positioning basis. d. Using the three-point positioning basis formed by the first positioning post, the second positioning post and the third positioning post as the modeling basis, a dental model is made.

8. The three-point positioning modeling method according to claim 7, characterized in that, The first positioning post, the second positioning post, and the third positioning post are each composed of an artificial implant.

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