An oral mucosa modeling auxiliary scanning positioning device

Abstract

The application relates to an oral mucosa modeling auxiliary scanning positioning device, and belongs to the technical field of denture modeling. The device solves the problem of inaccurate denture modeling caused by scanning deviation of the oral mucosa of a patient in the prior art. The oral mucosa modeling auxiliary scanning positioning device comprises a first positioning main body, a second positioning main body and a supporting structure, the supporting structure is supported between the first positioning main body and the second positioning main body, the first positioning main body and the second positioning main body are used for being sleeved outside the upper and lower alveolar ridge mucosa of a patient respectively, and the first positioning main body and the second positioning main body are respectively provided with a first positioning mark and a second positioning mark on the opposite sides. The application realizes the support of the oral cavity of the patient during oral mucosa scanning and provides a scanning positioning reference, and the accuracy of oral mucosa scanning of the patient is improved.

Description

Technical Field

[0001] This invention relates to the field of denture modeling technology, and in particular to an auxiliary scanning and positioning device for oral mucosa modeling. Background Technology

[0002] Existing digital dental impression technology has a wide range of applications, primarily for taking impressions of fixed dentures. The basic principles of digital impression technology are: 1) Optical imaging technology: acquiring the surface morphology of teeth and oral mucosa through non-contact optical imaging, structured light projection: projecting specifically coded gratings or stripe patterns onto the surface of teeth and oral mucosa, capturing pattern deformation through a camera, and calculating depth information using triangulation principles. 2) Data acquisition and processing, real-time dynamic capture: the scanning head moves within the oral cavity, continuously capturing multiple local images or point cloud data. 3) 3D model reconstruction: using algorithms (such as the ICP algorithm) to align and stitch the continuously scanned local data into a complete oral model, with the stitching of the oral model mostly based on tooth morphology.

[0003] However, when using digital dental impression technology to create digital impressions of edentulous jaws for complete dentures, scanning and creating the oral model is difficult and prone to errors. The main reasons are as follows: 1. Edentulous jaw impressions require large-scale data scanning; without teeth as a reference for stitching, the resulting stitching error is significant; 2. The oral mucosa is not hard tissue and is easily moved, making it difficult to connect subsequent scans with previous ones, leading to scan interruptions; 3. The oral mucosal reflection line serves as the edge of the denture base; traction during scanning can cause the mucosal reflection line to move, which is difficult to determine using digital methods; 4. Intraoral soft tissues (buccal mucosa, tongue) can obstruct the view, and because they are soft tissues like the alveolar ridge mucosa, they are difficult to exclude.

[0004] For the reasons mentioned above, this invention provides an oral mucosa modeling-assisted scanning and positioning device to improve the speed and accuracy of obtaining digital impressions for complete dentures. Summary of the Invention

[0005] Based on the above analysis, the present invention aims to provide an oral mucosa modeling auxiliary scanning and positioning device to solve the problem of inaccurate denture modeling caused by deviations in the scanning of the patient's oral mucosa in the prior art.

[0006] The objective of this invention is mainly achieved through the following technical solutions: An oral mucosa modeling-assisted scanning and positioning device includes: a first positioning body, a second positioning body, and a support structure; the support structure is supported between the first positioning body and the second positioning body; the first positioning body and the second positioning body are respectively used to be fitted onto the outside of the upper and lower alveolar ridges of the patient; the first positioning body and the second positioning body are respectively provided with a first positioning mark and a second positioning mark on opposite sides.

[0007] Furthermore, the first positioning mark and the second positioning mark are irregular protrusions on the surfaces of the first positioning body and the second positioning body.

[0008] Furthermore, the first positioning body is provided with a first finger-shaped positioning piece; the second positioning body is provided with a second finger-shaped positioning piece; the first finger-shaped positioning piece and the second finger-shaped positioning piece are respectively used to position the alveolar ridges on the upper and lower sides of the patient's oral cavity.

[0009] Furthermore, the ends of the first and second finger-shaped positioning pieces are each provided with a first engaging portion; a second engaging portion is fixed on the alveolar ridge; the first engaging portion can engage with the second engaging portion.

[0010] Furthermore, the first engaging part is a positioning hole, and the second engaging part is a positioning pin; the positioning pin is bonded to the surface of the alveolar ridge, and the positioning pin can be engaged in the positioning hole.

[0011] Furthermore, multiple positioning holes are provided on the first finger-shaped positioning piece and / or the second finger-shaped positioning piece.

[0012] Furthermore, the plurality of positioning holes are arranged in an array on the first finger-shaped positioning piece and / or the second finger-shaped positioning piece.

[0013] Furthermore, the first finger-shaped positioning piece and / or the second finger-shaped positioning piece are fixedly installed on the first positioning body and / or the second positioning body by bolts.

[0014] Furthermore, the height of the support structure is adjustable.

[0015] Furthermore, it also includes a nail holder; the nail holder is provided with a nail holding part, and the end of the nail holding part has a strip-shaped slot, so that the positioning nail can be inserted into the inner hole of the nail holding part.

[0016] The technical solution of the present invention can achieve at least one of the following effects: 1. The oral mucosa modeling auxiliary scanning and positioning device of the present invention, in use, fixes the first positioning body and the second positioning body on the outside of the alveolar ridges on the upper and lower sides of the patient's oral cavity, and supports and fixes them through a support structure; on the one hand, it can open and fix the patient's oral cavity, eliminating interference from other soft tissues to the scanning; on the other hand, the first positioning body and the second positioning body can limit the oral mucosa reflection line to a certain extent, preventing the oral mucosa reflection line from being pulled and displaced, affecting the scanning accuracy, improving the scanning effect, and ultimately ensuring the accuracy of the complete denture model.

[0017] 2. The oral mucosa modeling-assisted scanning and positioning device of the present invention, by setting a first positioning mark and a second positioning mark on a first positioning body and a second positioning body, can serve as a reference benchmark when assembling the oral cavity model after scanning, thereby improving the accuracy of assembling the scanned images of the oral cavity model and improving the precision of the dental prosthesis fabrication.

[0018] 3. The oral mucosa modeling-assisted scanning positioning device of the present invention has a first finger-shaped positioning piece and a second finger-shaped positioning piece installed on the inner sides of the first positioning body and the second positioning body, respectively, and a positioning pin is attached to the surface of the alveolar ridge. The first finger-shaped positioning piece and the second finger-shaped positioning piece are engaged with the positioning pin through positioning holes at their ends. The present invention achieves relative fixation between the positioning body, the finger-shaped positioning piece and the alveolar ridge through the cooperation of the positioning pin and the positioning hole, ensuring that there is no relative displacement between the positioning device and the alveolar ridge during the scanning process, so as to achieve accurate positioning.

[0019] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0020] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0021] Figure 1 This is one of the structural schematic diagrams of the oral mucosa modeling-assisted scanning and positioning device according to Embodiment 1 of the present invention; Figure 2 This is a second schematic diagram of the oral mucosa modeling-assisted scanning and positioning device according to Embodiment 1 of the present invention; Figure 3 This is a top view of the oral mucosa modeling-assisted scanning and positioning device of Embodiment 1 of the present invention; Figure 4 This is a side view of the oral mucosa modeling-assisted scanning and positioning device according to Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the positioning pin of the oral mucosa modeling-assisted scanning and positioning device according to Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the staple holder of the oral mucosa modeling-assisted scanning and positioning device according to Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the installation structure of the height-adjustable marker tooth of the oral mucosa modeling auxiliary scanning and positioning device according to Embodiment 2 of the present invention. Figure 8 This is a schematic diagram of the positioning body of the oral mucosa modeling-assisted scanning and positioning device according to Embodiment 2 of the present invention; Figure 9 This is a schematic diagram of the adjustment structure of the oral mucosa modeling-assisted scanning and positioning device according to Embodiment 2 of the present invention; Figure 10 This is a schematic diagram of the adjustable marker tooth structure of the oral mucosa modeling-assisted scanning and positioning device according to Embodiment 2 of the present invention; Figure 11 This is a schematic diagram of the coordination state between the adjustable marker teeth and the adjustment structure of the oral mucosa modeling auxiliary scanning and positioning device in Embodiment 2 of the present invention; Figure 12 This is a schematic diagram of the cooperation state between the positioning body and the adjustment structure of the oral mucosa modeling-assisted scanning and positioning device in Embodiment 2 of the present invention; Figure 13 This is a schematic diagram of the height adjustment state of the adjustable marking teeth in Embodiment 2 of the present invention; Figure 14 This is a schematic diagram of the modular splicing positioning body of Embodiment 3 of the present invention; Figure 15 This is a top view of the modular splicing positioning body of Embodiment 3 of the present invention; Figure 16 This is a schematic diagram of the main module of the modular splicing positioning body in Embodiment 3 of the present invention.

[0022] Figure label: 1-First positioning body; 2-Second positioning body; 3-First finger-shaped positioning piece; 4-Support structure; 41-Adjusting sleeve; 42-Locking pin; 43-Telescopic rod; 5-Second finger-shaped positioning piece; 6-First positioning mark; 7-Second positioning mark; 8-Positioning hole; 9-Positioning pin; 91-Convex frustum; 92-Annular groove; 93-Fixed base; 10-Pin holder; 101-Grip part; 102-Pin holder part; 103-Strip groove; 11-Adjusting slot; 12-Adjusting wheel; 13-Adjustable marking tooth; 14-Internal threaded cylinder; 15-Positioning rod; 16-Displacement hole; 17-Positioning hole; 18-Mounting hole; 19-Threaded post; 20-Mounting post; 21-Main module; 22-First hinge part; 23-Second hinge part. Detailed Implementation

[0023] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0024] Example 1 A specific embodiment of the present invention discloses an oral mucosa modeling-assisted scanning and positioning device, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, it includes: a first positioning body 1, a second positioning body 2, and a support structure 4; the support structure 4 is supported between the first positioning body 1 and the second positioning body 2; the first positioning body 1 and the second positioning body 2 are respectively used to fit on the outside of the upper and lower alveolar ridges of the patient; the first positioning body 1 and the second positioning body 2 are respectively provided with a first positioning mark 6 and a second positioning mark 7 facing opposite sides.

[0025] Furthermore, such as Figure 1 , Figure 2 As shown, both the first positioning body 1 and the second positioning body 2 are C-shaped structures.

[0026] In one specific embodiment of the present invention, the first positioning body 1 and the second positioning body 2 have the same structural dimensions; specifically, the first positioning body 1 and the second positioning body 2 can have multiple models, model 1: length 6cm, width 7cm; model 2: length 5.5cm, width 6.5cm; model 3: length 6.5cm, width 8cm.

[0027] like Figure 1 , Figure 2 As shown, the first positioning mark 6 and the second positioning mark 7 are raised structures disposed on the surfaces of the first positioning body 1 and the second positioning body 2.

[0028] Specifically, the protruding structure is an irregular, continuous mountain-shaped structure; or, the protruding structure is formed by opening multiple irregular slots on the surface of the first positioning body 1 or the second positioning body 2, such as... Figure 4 As shown.

[0029] In this embodiment, as Figure 1 , Figure 2 , Figure 3 As shown, the first positioning body 1 is provided with a first finger-shaped positioning piece 3; the second positioning body 2 is provided with a second finger-shaped positioning piece 5; the first finger-shaped positioning piece 3 and the second finger-shaped positioning piece 5 are respectively used to position the alveolar ridges on the upper and lower sides of the patient's oral cavity.

[0030] like Figure 3 , Figure 4 As shown, the ends of the first finger-shaped positioning piece 3 and the second finger-shaped positioning piece 5 are both provided with a first engaging portion; furthermore, a second engaging portion is fixed on the alveolar ridge; the first engaging portion can engage with the second engaging portion.

[0031] Specifically, such as Figure 3As shown, the first engaging part is a positioning hole 8, and the second engaging part is a positioning pin 9; the positioning pin 9 is bonded to the surface of the alveolar ridge, and the positioning pin 9 can be engaged in the positioning hole 8.

[0032] In one specific embodiment of the present invention, such as Figure 5 As shown, the positioning pin 9 includes: a convex frustum 91, an annular groove 92, and a fixed base 93; wherein, the convex frustum 91 and the fixed base 93 are fixedly connected or are an integral structure, and the annular groove 92 is an inwardly recessed circular groove formed at the connection between the two; the convex frustum 91 can engage with the positioning hole 8 to achieve the positioning and fixing effect of the first finger-shaped positioning piece 3 / second finger-shaped positioning piece 5; specifically, the diameter of the fixed base 93 is larger than the diameter of the convex frustum 91, which facilitates the placement and removal of the positioning pin 9.

[0033] Specifically, the convex frustum 91 at the top of the positioning pin 9 is a crown-shaped structure with a semi-circular cross-section and a diameter of 2mm; the lower surface of the fixing base 93 at the bottom of the positioning pin 9 is a rough surface to facilitate adhesion to the oral mucosa.

[0034] In this embodiment, the positioning pin 9 is made of titanium. During implementation, the positioning pin 9 is bonded to the alveolar ridge mucosa of the patient, and the first positioning body 1 / second positioning body 2 overlaps the positioning pin 9 via the extended first finger-shaped positioning piece 3 / second finger-shaped positioning piece 5.

[0035] In this embodiment, the annular groove 92 is provided so that the positioning pin 9 and the positioning hole 8 are not easily separated after engagement; in practice, the main structure of the finger-shaped positioning piece can be inserted into the annular groove 92 and connected to the alveolar ridge through multiple positioning pins 9.

[0036] In this embodiment, multiple positioning holes 8 are provided on the first finger-shaped positioning piece 3 and / or the second finger-shaped positioning piece 5.

[0037] In this embodiment, a plurality of positioning holes 8 are arranged in an array on the first finger-shaped positioning piece 3 and / or the second finger-shaped positioning piece 5.

[0038] In this embodiment, the first finger-shaped positioning piece 3 and / or the second finger-shaped positioning piece 5 are fixedly installed on the first positioning body 1 and / or the second positioning body 2 by bolts.

[0039] Furthermore, in this embodiment, the height of the support structure 4 is adjustable.

[0040] Specifically, such as Figure 4As shown, the support structure 4 includes: an adjusting sleeve 41, a telescopic rod 43, and a locking pin 42; the adjusting sleeve 41 and the telescopic rod 43 are respectively fixedly installed on the first positioning body 1 and the second positioning body 2, and the telescopic rod 43 is slidably installed in the adjusting sleeve 41; the locking pin 42 is screwed onto the side of the adjusting sleeve 41 by threads and can lock the telescopic rod 43.

[0041] Alternatively, the adjusting sleeve 41 and / or the telescopic rod 43 are rotatably connected to the first positioning body 1 and / or the second positioning body 2 via bearings, and the adjusting sleeve 41 and / or the telescopic rod 43 are screwed together; by driving the adjusting sleeve 41 and the telescopic rod 43 to rotate relative to each other, the degree of engagement between the two can be adjusted, thereby enabling the overall length of the two to extend or retract, and realizing the height adjustment of the support structure 4.

[0042] In this embodiment, by designing the height of the support structure 4 to be adjustable, the positioning device can be adapted to the bite height of different patients, thereby playing a role in determining the bite relationship.

[0043] Furthermore, since the positioning pin 9 is very small, in order to facilitate the bonding and fixation of the positioning pin 9 to the patient's alveolar ridge, the present invention also provides a pin holder 10; such as Figure 6 As shown, the nail holder 10 is provided with a gripping part 101 and a nail holding part 102. The end of the nail holding part 102 is provided with a strip-shaped slot 103, and the positioning nail 9 can be inserted into the inner hole of the nail holding part 102.

[0044] Furthermore, at least two of the strip-shaped slots 103 are provided in the circumferential direction of the nail holding part 102; when the nail holding part 102 cooperates with the positioning nail 9 to pick up the positioning nail 9, the nail holding part 102 undergoes a slight deformation at the strip-shaped slots 103 to pick up the positioning nail 9, and the nail holder 10 is removed after the positioning nail 9 is bonded to the alveolar ridge.

[0045] Specifically, the nail-holding part 102 is cylindrical; the inner diameter of the nail-holding part 102 is equal to the outer diameter of the annular groove 92 of the positioning nail 9.

[0046] In this embodiment, the gripping part 101 of the nail holder 10 is cylindrical, and the inner diameter of the nail holding part 102 is consistent with the outer diameter of the annular groove 92 of the positioning nail 9; the wall thickness of the nail holding part 102 is 0.5 mm, and the outer diameter is 3 mm. The end interface of the nail holding part 102 has three strip-shaped slots 103 (slits), the length of the strip-shaped slots 103 is 2 mm, and the width is 0.5 mm; the nail holding part 102 has a certain elasticity, and when the nail holding part 102 is engaged with the positioning nail 9, the strip-shaped slots 103 deform into a cone shape to pick up the positioning nail 9.

[0047] In this embodiment, both the first positioning body 1 and the second positioning body 2 are C-shaped hooks, such as... Figure 1 , Figure 2 As shown.

[0048] In this embodiment, the finger-shaped positioning piece is 1cm long, 0.4cm wide, and 0.1mm thick, and is detachably mounted on the positioning body using screws; for example... Figure 2 , Figure 3 As shown, the first finger-shaped positioning piece 3 and / or the second finger-shaped positioning piece 5 are bent structures, and the bending direction is inserted into the inside of the positioning body.

[0049] Specifically, a finger-shaped positioning piece is set 1.5 cm from the center on both sides of the first positioning body 1 and the second positioning body 2, and at the end 1 / 5 of each side.

[0050] In one specific embodiment of the present invention, the cross-section of the first positioning body 1 and the second positioning body 2 is a hexagonal structure with a side length of 0.3 cm. The positioning mark is an irregular, uneven tooth pattern.

[0051] In this embodiment, the positioning device comes in different models to accommodate different dental arch widths (width 3, 4, 5, 6 cm, length 5, 7, 8 cm), is made of aluminum, and can be easily adjusted clinically.

[0052] During implementation: The finger-shaped positioning piece fully engages with the positioning pin 9, facilitating the positioning of the first positioning body 1 or the second positioning body 2 on the alveolar ridge and ensuring the positioning device remains stationary during scanning. The first positioning body 1 and the second positioning body 2 can pull on the buccal mucosa, the intermediate connecting part, and the positioning pin 9. Different areas on the lower surface of the first positioning body 1 and the upper surface of the second positioning body 2 have positioning markings with different characteristics (irregular protruding teeth), facilitating scanning recognition and image stitching.

[0053] Furthermore, by adjusting the height of the support structure 4, the distance between the first positioning body 1 (maxillary hook) and the second positioning body 2 (mandibular hook) can be adjusted, that is, the vertical distance between them can be adjusted, which facilitates scanning and helps to determine the spatial relationship (jaw position relationship) between the upper and lower alveolar ridges. Figure 1 As shown.

[0054] Example 2 A specific embodiment of the present invention is an improvement upon embodiment 1: In this embodiment, as Figure 7 As shown, the positioning mark on the positioning body is set as a split structure and is movably connected, and the height of the positioning mark on the positioning body is adjustable.

[0055] In this embodiment, adjustable marker teeth 13 are set as positioning markers on the first positioning body 1 and / or the second positioning body 2, and are used as image stitching references when scanning the alveolar ridge morphology.

[0056] Specifically, the adjustable marking teeth 13 are installed in the same way on the first positioning body 1 and the second positioning body 2; taking the second positioning body 2 as an example, the installation method of the adjustable marking teeth 13 is explained as follows: like Figure 7 , Figure 8 , Figure 10 As shown, the bottom of the adjustable marking tooth 13 is provided with an internal threaded cylinder 14 and a positioning rod 15; correspondingly, a displacement hole 16 and a positioning hole 17 are opened on the upper surface of the second positioning body 2; the internal threaded cylinder 14 is slidably installed in the displacement hole 16, and the positioning rod 15 is slidably installed in the positioning hole 17, so as to realize the sliding installation of the adjustable marking tooth 13 on the second positioning body 2.

[0057] Preferably, multiple (3-4) positioning rods 15 are arranged circumferentially around the displacement hole 16. In this embodiment, the cooperation between the positioning rods 15 and the positioning hole 17 can prevent the adjustable marking teeth 13 from rotating relative to the second positioning body 2, so that they can only move up and down relative to the second positioning body 2, thereby realizing the height adjustment of the positioning mark and avoiding the height of the positioning mark from exceeding the upper surface of the alveolar ridge and obstructing the alveolar ridge, which would affect the accuracy of the alveolar ridge morphology scanning.

[0058] Furthermore, such as Figure 9 , Figure 11 , Figure 12 As shown, in order to achieve the vertical sliding displacement of the adjustable marking teeth 13 on the second positioning body 2, an adjustment structure is provided in this embodiment to adjust the installation height of the adjustable marking teeth 13 on the second positioning body 2.

[0059] Specifically, such as Figure 9 As shown, the adjustment structure includes: an adjustment wheel 12, a threaded post 19, and a mounting post 20; specifically, the threaded post 19 is provided above the adjustment wheel 12, and the mounting post 20 is provided below the adjustment wheel 12, and the three are fixedly connected or are an integral structure.

[0060] Furthermore, such as Figure 7 , Figure 8 , Figure 11 , Figure 12As shown, the second positioning body 2 has an adjustment slot 11 on its side. A displacement hole 16 is provided above the adjustment slot 11, and an installation hole 18 is provided below the adjustment slot 11. The adjustment wheel 12 is rotatably installed in the adjustment slot 11. Specifically, the installation column 20 is rotatably connected to the installation hole 18 through a bearing. The threaded column 19 passes through the displacement hole 16 and is threadedly connected to the internal threaded cylinder 14.

[0061] During implementation, rotating the adjusting wheel 12 causes the threaded post 19 to rotate. Because the threaded post 19 is threadedly engaged with the internal threaded cylinder 14 below the adjustable marking tooth 13, and the adjustable marking tooth 13 is restricted from rotating due to the engagement of the positioning rod 15 and the positioning hole 17, the engagement state between the threaded post 19 and the internal threaded cylinder 14 changes. They gradually engage or disengage, allowing the threaded post 19 to gradually screw into or out of the internal threaded cylinder 14. This drives the adjustable marking tooth 13 to move upwards / downwards relative to the second positioning body 2, thereby adjusting the height of the positioning mark. Figure 13 As shown.

[0062] In this embodiment, multiple adjustable marker teeth 13 are installed on the second positioning body 2 as positioning markers during alveolar ridge morphology scanning. This enables faster and more accurate stitching consistency when processing and stitching the scanned images. At the same time, the adjustable marker teeth 13 in this embodiment adopt a human-tooth-like design, which allows for vertical height adjustment while serving as a positioning reference. This allows for adaptive adjustment for patients with different alveolar ridge morphologies, preventing the positioning markers from obscuring the alveolar ridge and affecting the scanning effect.

[0063] Example 3 In this embodiment, the technical solution is further improved based on Embodiment 1 or Embodiment 2: In practical use, when the matching degree between the positioning body and the patient's alveolar ridge morphology is poor, it is necessary to use pliers to bend the positioning body and adjust its size and opening degree to adapt to the patient's oral condition. In this embodiment, improvements are made to address the problem of insufficient adaptability of the auxiliary scanning positioning device due to the inability to bend the positioning body and the different alveolar ridge opening angles of different patients.

[0064] In this embodiment, the first positioning body 1 and the second positioning body 2 are configured as a multi-module splicing structure, with the modules hinged together and the angle between each splicing module adjustable.

[0065] In this embodiment, the first positioning body 1 and the second positioning body 2 have the same structure; below, the specific structure of the positioning body in this embodiment will be described using the first positioning body 1 as an example.

[0066] like Figure 14 , Figure 15 , Figure 16 As shown, the first positioning body 1 includes: multiple main modules 21, with a first hinge portion 22 and a second hinge portion 23 respectively provided at both ends of the main module 21; the first hinge portion 22 and the second hinge portion 23 of two adjacent main modules 21 are hingedly connected.

[0067] Specifically, the first hinge portion 22 and the second hinge portion 23 are hinged together by bolts; when the bolts are loosened, the first hinge portion 22 and the second hinge portion 23 can rotate relative to each other; when the bolts are tightened, the first hinge portion 22 and the second hinge portion 23 are fixed relative to each other.

[0068] In this embodiment, multiple main modules 21 are connected in series and hinged together in sequence. By adjusting the connection angle between two adjacent main modules 21, the opening and closing angle of the first positioning main body 1 formed by the assembly of multiple main modules 21 can be adjusted, thereby making it suitable for different patients' alveolar ridge morphologies.

[0069] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A scanning and positioning device for oral mucosa modeling, characterized in that, include: The first positioning body (1), the second positioning body (2), and the supporting structure (4); The support structure (4) is supported between the first positioning body (1) and the second positioning body (2); The first positioning body (1) and the second positioning body (2) are respectively used to be fitted onto the outside of the alveolar ridge mucosa on the upper and lower sides of the patient; The first positioning body (1) and the second positioning body (2) are respectively provided with a first positioning mark (6) and a second positioning mark (7) facing opposite sides; The first positioning mark (6) and the second positioning mark (7) are configured with adjustable marking teeth (13); The bottom of the adjustable marking tooth (13) is provided with an internal threaded cylinder (14) and a positioning rod (15). The first positioning body (1) and the second positioning body (2) are provided with a displacement hole (16) and a positioning hole (17). The internal threaded cylinder (14) is slidably installed in the displacement hole (16), and the positioning rod (15) is slidably installed in the positioning hole (17). The first positioning body (1) and the second positioning body (2) are provided with adjustment slots (11) on their sides. An adjustment wheel (12) is rotatably installed in the adjustment slots (11). A threaded post (19) is provided above the adjustment wheel (12), and a mounting post (20) is provided below the adjustment wheel (12). The adjustment wheel (12), the threaded post (19), and the mounting post (20) are fixedly connected. A displacement hole (16) is provided above the adjustment slots (11), and a mounting hole (18) is provided below the adjustment slots (11). The adjustment wheel (12) is rotatably installed in the adjustment slots (11). The mounting post (20) is rotatably connected to the mounting hole (18) through a bearing. The threaded post (19) passes through the displacement hole (16) and is threadedly connected to the internal threaded cylinder (14). Rotating the adjusting wheel (12) causes the threaded column (19) to rotate. Since the threaded column (19) is threadedly connected to the internal threaded cylinder (14) below the adjustable marking tooth (13) and the adjustable marking tooth (13) is restricted from rotating due to the cooperation between the positioning rod (15) and the positioning hole (17), the engagement state between the threaded column (19) and the internal threaded cylinder (14) changes. The threaded column (19) and the internal threaded cylinder (14) gradually engage or gradually disengage, thereby enabling the threaded column (19) to gradually screw into or out of the internal threaded cylinder (14), driving the adjustable marking tooth (13) to move up and down relative to the first positioning body (1) or the second positioning body (2), thereby achieving height adjustment of the positioning mark.

2. The oral mucosa modeling-assisted scanning and positioning device according to claim 1, characterized in that, The first positioning mark (6) and the second positioning mark (7) are irregular protrusions on the surfaces of the first positioning body (1) and the second positioning body (2).

3. The oral mucosa modeling-assisted scanning and positioning device according to claim 1 or 2, characterized in that, The first positioning body (1) is provided with a first finger-shaped positioning piece (3); the second positioning body (2) is provided with a second finger-shaped positioning piece (5); the first finger-shaped positioning piece (3) and the second finger-shaped positioning piece (5) are respectively used to position the alveolar ridges on the upper and lower sides of the patient's oral cavity.

4. The oral mucosa modeling-assisted scanning and positioning device according to claim 3, characterized in that, The first finger-shaped positioning piece (3) and the second finger-shaped positioning piece (5) are each provided with a first engaging part at their ends; a second engaging part is fixed on the alveolar ridge; the first engaging part can engage with the second engaging part.

5. The oral mucosa modeling-assisted scanning and positioning device according to claim 4, characterized in that, The first engaging part is a positioning hole (8), and the second engaging part is a positioning pin (9); the positioning pin (9) is bonded to the surface of the alveolar ridge mucosa, and the positioning pin (9) can be engaged in the positioning hole (8).

6. The oral mucosa modeling-assisted scanning and positioning device according to claim 5, characterized in that, The positioning holes (8) are provided in multiples on the first finger-shaped positioning piece (3) and / or the second finger-shaped positioning piece (5).

7. The oral mucosa modeling-assisted scanning and positioning device according to claim 6, characterized in that, Multiple positioning holes (8) are arranged in an array on the first finger-shaped positioning piece (3) and / or the second finger-shaped positioning piece (5).

8. The oral mucosa modeling-assisted scanning and positioning device according to any one of claims 4-7, characterized in that, The first finger-shaped positioning piece (3) and / or the second finger-shaped positioning piece (5) are fixedly installed on the first positioning body (1) and / or the second positioning body (2) by bolts.

9. The oral mucosa modeling-assisted scanning and positioning device according to any one of claims 1-2 and 4-7, characterized in that, The height of the support structure (4) is adjustable.

10. The oral mucosa modeling-assisted scanning and positioning device according to any one of claims 5-7, characterized in that, It also includes a nail holder (10); the nail holder (10) is provided with a nail holding part (102), and a strip-shaped slot (103) is opened at the end of the nail holding part (102), and the positioning nail (9) can be inserted into the inner hole of the nail holding part (102).

Images