A centering jig for a dental prosthesis

Abstract

This application provides a center-cutting fixture for dentures, comprising: a cutting receiving component having a cutting receiving cavity with an open top for accommodating the denture to be cut; a positioning hole penetrating through the outer wall of at least one side of the cutting receiving component, the positioning hole communicating with the cutting receiving cavity; a locking fastener including a positioning post and a threaded connector, the locking fastener being inserted into the cutting receiving cavity by the positioning post engaging with the positioning hole, so that the threaded connector is threadedly connected to the denture; and a curing layer disposed in the cutting receiving cavity and covering the denture; wherein the open top is for inserting a cutting tool of a cutting device to cut the denture covered by the curing layer. This solves the problem in the prior art where irregular dentures lack a stable positioning surface, leading to inaccurate positioning and thus failing to ensure the cutting surface is centered on the product, resulting in large gap measurement errors.

Description

Technical Field

[0001] This application relates to the field of dental medical device processing and testing equipment technology, and in particular to a center cutting tool for dentures. Background Technology

[0002] In the manufacturing of dental medical devices, there are high requirements for the quality of the assembled denture components, including implants, abutments, and screws. Therefore, the inspection of these denture components is crucial. If it is necessary to measure the internal clearance accuracy of each component of the assembled denture, the assembled denture is typically cut along its center, leaving only half of the denture for inspection.

[0003] Because the assembled prosthesis with implants, abutments, and screws has an irregular shape, it is difficult to accurately cut it from the center during the cutting process. Since irregular prostheses lack stable positioning surfaces, inaccurate positioning leads to an inability to ensure the cut surface is centered, resulting in large errors in subsequent gap measurements. This fails to meet the requirements of high-precision quality inspection, affecting product quality control and clinical application outcomes.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a center cutting fixture for dentures, which solves the problem that irregular dentures in the prior art do not have a stable positioning surface, resulting in inaccurate positioning and thus failing to ensure that the cutting surface is in the center of the product, causing large gap measurement errors.

[0006] This application provides a center cutting fixture for dentures, comprising: a cutting receiving member, the cutting receiving member having a cutting receiving cavity with an open top, the cutting receiving cavity being used to receive the denture to be cut, and a positioning hole being provided through the outer wall of at least one side of the cutting receiving member, the positioning hole being connected to the cutting receiving cavity.

[0007] The locking device includes a positioning post and a screw connector. The locking device is inserted into the cut-out receiving cavity by the positioning post mating with the positioning hole, so that the screw connector can be threadedly connected to the denture.

[0008] A curing layer is provided in the sectioned accommodating cavity and covers and encapsulates the denture component;

[0009] The top opening is used to insert the cutting tool of the cutting equipment to cut the denture piece covered by the cured layer.

[0010] Optionally, the locking device also includes a locking head, a positioning post disposed on the locking head, and a screw connector coaxially disposed on the positioning post;

[0011] The positioning pin is inserted into the positioning hole so that the locking head is located outside the cutting cavity and the screw connector is located inside the cutting cavity.

[0012] Optionally, a connecting countersunk hole is provided on the outer wall of the cut-out receiving part, a positioning hole is provided in the connecting countersunk hole, and a locking head is embedded in the connecting countersunk hole.

[0013] Optionally, the cured layer is a resin cured layer, which is formed by filling the sectional cavity with resin adhesive and curing it.

[0014] Optionally, the sectional receiving member is provided with multiple positioning holes, which are arranged at intervals along the length direction of the sectional receiving member, and multiple locking fasteners are provided to match the positioning holes.

[0015] Optionally, the center cutting fixture further includes a cutting fixture disk, on which the cutting receiving element is disposed, the cutting fixture disk being used to connect to the cutting equipment to limit the cutting receiving element on the cutting equipment.

[0016] Optionally, the cutting tooling disc has a locking threaded hole, and a fixing screw passes through the cutting receiving part and is screwed onto the locking threaded hole by the fixing screw.

[0017] Optionally, an inner groove is provided on the side wall in the width direction of the sectional receiving member, the inner groove penetrates the sectional receiving member in the vertical direction, and a locking step is provided in the inner groove;

[0018] The fixing screw passes through the inner groove and engages with the locking step to lock the cutting receiving part. Optionally, a limiting groove is formed on the upper surface of the cutting tooling disc, and the cutting receiving part is embedded in the limiting groove.

[0019] Optionally, the cutting equipment is a CNC machining center, and the cutting tool is a milling cutter;

[0020] The CNC machining center cuts the cured layer and the encased denture using pre-calibrated cutting parameters.

[0021] Beneficial Effects: This application discloses a center-cutting fixture for dentures. A cutting cavity with an open top is formed on the upper surface of a cutting receiving component, allowing the denture to be cut to be placed within it. A positioning hole is formed through at least one side of the outer wall of the cutting receiving component, allowing a locking fastener to be inserted into the cutting receiving cavity via a positioning pin that mates with the positioning hole. This enables a screw connector to be threaded into the screw channel of the denture itself. Since the screw channel is located at the center of the denture, the denture can be suspended within the cutting receiving cavity. By utilizing the centrally located screw channel of the denture and connecting it to the locking fastener, and employing a positioning pin and positioning hole for precise positioning, positioning accuracy is improved, thereby determining the accurate positional reference of the denture during subsequent processing. Furthermore, by setting a curing layer within the sectional cavity, the curing layer can cover and enclose the denture. When the cutting tool of the cutting device cuts the denture covered by the curing layer through the top opening, the curing layer fills the irregular contour of the denture's surface and supports and binds the denture. This allows the curing layer and the denture covered to be cut as a whole during the cutting process, making the cutting process of the cutting tool more stable and ensuring that the cross-section of the denture after sectionalization is in the ideal centered position. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main part of a central cutting tool for a denture according to an embodiment of this application;

[0023] Figure 2 This is a cross-sectional view of the main structure of a center cutting fixture for a denture component according to an embodiment of this application, before cutting.

[0024] Figure 3 This is a schematic diagram of the main structure of a center cutting fixture for a denture component according to an embodiment of this application, after cutting.

[0025] Figure 4 This is a schematic diagram of the structure of a center cutting tool for a denture according to an embodiment of this application;

[0026] Figure 5 This is an exploded view of a center cutting fixture for dentures according to an embodiment of this application.

[0027] In the diagram: 10, denture component; 11, screw channel; 100, sectioned receiving component; 110, sectioned receiving cavity; 120, positioning hole; 130, connecting countersunk hole; 140, inner groove; 141, locking step; 200, locking component; 210, locking head; 220, positioning post; 230, screw connector; 300, curing layer; 400, cutting tooling disc; 410, locking threaded hole; 420, fixing screw; 430, limiting countersunk groove. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer and more explicit, the following detailed description of this application is provided with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0029] like Figure 1 , Figure 5 As shown, this embodiment proposes a center-cutting fixture for dentures, which can be used on a cutting device to fix the denture 10, allowing the denture 10 to be directly cut by a cutting tool in the cutting device. The denture 10 can be an assembly of an implant, abutment, and screws. Since the implant and abutment have irregular shapes, the overall shape of the denture 10 is also irregular. Furthermore, the denture 10 is fixed in the oral cavity through a screw channel 11 at its center during use. Therefore, one end of the denture 10 has a screw channel 11, and this center-cutting fixture is used to fix the denture 10 through its own screw channel 11.

[0030] like Figure 1 , Figure 2As shown, the central cutting fixture for dentures in this embodiment specifically includes: a cutting receiving component 100, a locking component 200, and a curing layer 300. The cutting receiving component 100 has a cutting receiving cavity 110 with an open top. The cutting receiving component 100 can adopt a square structure. For ease of structural description, the direction of the long side of the square structure is taken as the length direction (left-right direction), the direction of the wide side is taken as the width direction (front-back direction), and the direction of the height is taken as the up-down direction. Other components in this embodiment are also described using this standard. If it is a directional structure, one side direction can be selected as the front-back direction, and the other side direction can be taken as the left-right direction. The cutting receiving cavity 110 is used to receive the denture 10 to be cut. When the denture 10 is placed in the cutting receiving cavity 110, the depth of the cutting receiving cavity 110 must be greater than the denture 10. A positioning hole 120 is provided through the outer wall of at least one side of the sectional receiving member 100, and the positioning hole 120 communicates with the sectional receiving cavity 110; for example, the positioning hole 120 extends through the outer wall of the front side of the sectional receiving member 100 in the front-back direction. The locking member 200 includes a positioning post 220 and a screw connector 230. The locking member 200 is inserted into the sectional receiving cavity 110 by the positioning post 220 mating with the positioning hole 120, so that the screw connector 230 is threadedly connected to the denture member 10. The fitting accuracy between the positioning post 220 and the positioning hole 120 is high, so that the locking member 200 and the sectional receiving member 100 have high assembly accuracy. Thus, when the screw connector 230 is connected to the screw channel 11 at the center of the denture member 10, the coaxial accuracy between the center of the denture member 10 and the locking member 200 is high, thus ensuring that the center of the denture member 10 is in a stable and accurate position in the sectional receiving cavity 110. A cured layer 300 is disposed in the sectioned receiving cavity 110 and covers and encapsulates the denture 10; the cured layer 300 is poured into the sectioned receiving cavity 110 in a relatively soft state, and then cured to encapsulate the denture 10. Figure 2 , Figure 3 As shown, the position of the denture 10 within the cutting cavity 110 is fixed. Then, the locking fastener 200 can be removed, and the cutting device can be started. The top opening is used to insert the cutting tool of the cutting device to cut the denture 10 enclosed by the cured layer 300. During the cutting process of the denture 10, the cured layer 300 cures and limits the denture 10, keeping its position stable. The cutting device controls the cutting tool to cut off half of the denture 10, thereby exposing the internal assembly relationship of the denture 10 for subsequent gap measurement.

[0031] This embodiment provides a center-cutting fixture for dentures. A cutting receiving cavity 110 with an open top is formed on the upper surface of a cutting receiving member 100. The denture 10 to be cut can be placed in the cutting receiving cavity 110. A positioning hole 120 is formed through the outer wall of at least one side of the cutting receiving member 100. A locking fastener 200 is inserted into the cutting receiving cavity 110 by aligning a positioning pin 220 with the positioning hole 120. This allows a screw connector 230 to be threadedly connected to the screw channel 11 of the denture 10 itself. Since the screw channel 11 is located at the center of the denture 10, the denture 10 can be suspended in the cutting receiving cavity 110. By connecting the locking fastener 200 to the screw channel 11 located at the center of the denture 10, and using the positioning pin 220 and the positioning hole 120 for precise positioning, the positioning accuracy is improved, thereby determining the accurate position reference of the denture 10 in subsequent processing. Furthermore, by setting a curing layer 300 within the sectional cavity 110, the curing layer 300 can cover and enclose the denture 10. When the cutting tool of the cutting equipment cuts the denture 10 covered by the curing layer 300 through the top opening, the curing layer 300 fills the irregular contour of the denture 10's surface and supports and binds the denture 10. This allows the curing layer 300 and the denture 10 to be cut as a whole during the cutting process, making the cutting process of the cutting tool more stable. This ensures that the cross-section of the denture 10 after sectionalization is in the ideal centered position. Through a stable cutting process, the error of subsequent inspection can be minimized, meeting the requirements of high-precision quality inspection.

[0032] like Figure 1 , Figure 2 , Figure 5 As shown, the locking device 200 in this embodiment further includes a locking head 210, a positioning pin 220 disposed on the locking head 210, and a screw connector 230 coaxially disposed on the positioning pin 220. The locking device 200 extends in the front-rear direction and passes through the positioning pin 220 into the positioning hole 120, so that the locking head 210 is located outside the sectioned receiving cavity 110 and the screw connector 230 is located inside the sectioned receiving cavity 110. The positioning pin 220 is disposed in the positioning hole 120 with high precision, for example, reaching a fit tolerance of IT7 or higher; the positioning tolerance requirements of the positioning pin can be referenced, thereby achieving high-precision assembly between the locking device 200 and the sectioned receiving component 100. The locking head 210 may be provided with an internal hexagonal socket or other fit structure that facilitates tool turning, thereby facilitating the turning or fixing of the locking head 210 to connect it with the denture component 10.

[0033] like Figure 2 , Figure 3 , Figure 5As shown, further, the outer wall of the cutting receiving member 100 in this embodiment is provided with a connecting countersunk hole 130, a positioning hole 120 is formed in the connecting countersunk hole 130, and a locking head 210 is embedded in the connecting countersunk hole 130. In the specific structure, the connecting countersunk hole 130 is located on the front surface of the cutting receiving member 100 and is recessed to a certain depth towards the rear side, and the positioning hole 120 is formed on the bottom surface of the connecting countersunk hole 130. In this way, the locking head 210 can be received in the connecting countersunk hole 130 without protruding from the front surface of the cutting receiving member 100.

[0034] like Figure 1 , Figure 2 , Figure 5 As shown, in this embodiment, the curing layer 300 is a resin curing layer 300, which is formed by filling the sectional cavity 110 with resin adhesive and curing it. After the denture 10 is fixed in the sectional cavity 110 by the fastener 200, resin adhesive can be poured directly into the sectional cavity 110 so that the resin adhesive completely submerges or partially surrounds the denture 10. After the resin adhesive cures, the resin curing layer 300 is formed, thereby fixing the position of the denture 10 in the sectional cavity 110, which facilitates more stable cutting of the denture 10 in the future.

[0035] like Figure 1 , Figure 2 , Figure 5 As shown, further, the cutting receiving member 100 of this embodiment is provided with a plurality of positioning holes 120, which are arranged at intervals along the left and right directions of the cutting receiving member 100. Multiple locking fasteners 200 are provided to mate with the positioning holes 120. Thus, a denture 10 can be connected to the locking fastener 200, allowing multiple dentures 10 to be cut in a single filling of the cutting receiving cavity 110 with resin adhesive. Multiple center-cut dentures 10 can be obtained in a single cut, improving inspection efficiency.

[0036] like Figure 4 , Figure 5 As shown, the center cutting fixture in this embodiment further includes a cutting fixture disk 400, on which the cutting receiving member 100 is disposed. The cutting fixture disk 400 is used to connect to the cutting equipment to limit the cutting receiving member 100 on the cutting equipment. The cutting fixture disk 400 in this embodiment is disc-shaped, and the cutting receiving member 100 is supported by the cutting fixture disk 400, which can conveniently fix the cutting receiving member 100 on the cutting equipment.

[0037] like Figure 4 , Figure 5As shown, in this embodiment, the cutting fixture 400 is provided with a locking threaded hole 410, and a fixing screw 420 passes through the cutting receiving member 100 and is screwed onto the locking threaded hole 410 by the fixing screw 420. By using the fixing screw 420 and the locking threaded hole 410 in cooperation, the cutting receiving member 100 can be stably fixed on the cutting fixture 400, and during the cutting process, the cutting receiving member 100 can be stably fixed, thus making the cutting process more stable.

[0038] like Figure 4 , Figure 5 As shown, further, in this embodiment, an inner groove 140 is provided on the side wall in the width direction of the cutting receiving member 100. The inner groove 140 penetrates the cutting receiving member 100 in the vertical direction, and a locking step 141 is provided in the inner groove 140. The fixing screw 420 passes through the inner groove 140 and cooperates with the locking step 141 to lock the cutting receiving member 100. In the specific structure, inner grooves 140 are provided on both the left and right sides of the cutting receiving member 100. The inner groove 140 is a semi-circular groove, and the opening of the semi-circular groove faces outward in the left and right direction. The inner diameter of the upper half of the semi-circular groove is larger than the inner diameter of the lower half. Therefore, a locking step 141 is formed in the semi-circular groove due to the difference in inner diameter. The use of semi-circular inner grooves 140 on the left and right sides to cooperate with the fixing screw 420 ensures the stable fixation of the cutting receiving member 100.

[0039] like Figure 4 , Figure 5 As shown, further, a limiting countersunk groove 430 is formed on the upper surface of the cutting fixture disk 400 in this embodiment, and the cutting receiving member 100 is embedded in the limiting countersunk groove 430. The outer contour of the limiting countersunk hole matches the bottom contour of the cutting receiving member 100. In this way, when the cutting receiving member 100 is installed on the cutting fixture disk 400, quick positioning can be achieved by embedding the bottom of the cutting receiving member 100 into the limiting countersunk hole. Then, it is locked by the fixing screws 420 on the left and right sides, so that the cutting receiving member 100 can be quickly positioned and installed on the cutting fixture disk 400. Moreover, the limiting countersunk hole and the bottom of the cutting receiving member 100 can adopt a high-precision fit, thereby improving the positioning accuracy.

[0040] like Figure 4 , Figure 5As shown, in this embodiment, the cutting equipment (not shown) is a CNC machining center, and the cutting tool (not shown) is a milling cutter. The CNC machining center cuts the cured layer 300 and the encased denture 10 using pre-calibrated cutting parameters. The CNC machining center is pre-calibrated and suitable cutting parameters are set, including cutting speed, feed rate, and depth of cut. The CNC machining center is used to cut the denture 10. Because the cutting parameters of the CNC equipment can be precisely controlled, it ensures that the cutting thickness is uniform and the cutting position is accurately centered on the product. CNC machining ensures that the cross-section of the cut denture 10 is in the ideal centered position, providing a reliable sample for subsequent gap accuracy testing. After the denture 10 is positioned and cut as described above, the connection relationship between the various components (implant, abutment and screw) of the denture 10 can be visually displayed on the cut surface. Then, the gap accuracy of the cut denture 10 is tested. Using high-precision testing equipment, the gap between the various components of the product can be measured, thereby obtaining accurate gap accuracy data.

[0041] In summary, this application proposes a center sectioning fixture for denture parts. By employing a high-precision fit between the positioning pin and the positioning hole, and a cutting tool, the sectioning accuracy is improved. This allows for accurate sectioning from the center of the denture part, avoiding the positional deviation problems of traditional sectioning methods and ensuring the accuracy and consistency of the sectioning position. Precise sectioning makes the measured gap data more reflective of the actual assembly condition of the product, effectively improving the accuracy of gap accuracy detection and contributing to improved product quality control. The center sectioning positioning and gap accuracy detection can be integrated into the process using this center sectioning fixture, simplifying the operation process, reducing potential errors in intermediate steps, and improving inspection efficiency.

[0042] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A center sectioning tool for a dental prosthesis, comprising: include: A cutting receiving component having a cutting receiving cavity with an open top, the cutting receiving cavity being used to receive a denture to be cut, and a positioning hole being provided through the outer wall of at least one side of the cutting receiving component, the positioning hole being connected to the cutting receiving cavity; The locking device includes a positioning post and a screw connector. The locking device is inserted into the sectional receiving cavity by the positioning post mating with the positioning hole, so that the screw connector is threadedly connected to the denture. A curing layer is disposed in the cut-in accommodating cavity and covers and encapsulates the denture component; The top opening is used to insert a cutting tool from a cutting device to cut the denture encased in the cured layer.

2. The center cutting fixture for dentures according to claim 1, characterized in that, The locking device further includes a locking head, the positioning post is disposed on the locking head, and the screw connector is coaxially disposed on the positioning post; The positioning pin passes through the positioning hole so that the locking head is located outside the cutting cavity and the screw connector is located inside the cutting cavity.

3. The center sectioning tool for a dental prosthesis according to claim 2, wherein A countersunk hole is provided on the outer wall of the cutting and receiving component, the positioning hole is provided in the countersunk hole, and the locking head is embedded in the countersunk hole.

4. The center sectioning tool for a denture piece according to claim 1, wherein The cured layer is a resin cured layer, which is formed by filling the sectional cavity with resin adhesive and curing it.

5. The center sectioning tool for a dental prosthesis according to any one of claims 1 to 4, wherein The cutting receiving member is provided with a plurality of positioning holes, which are arranged at intervals along the length direction of the cutting receiving member, and a plurality of locking fasteners are provided to mate with the positioning holes.

6. The center sectioning tool for a denture piece according to claim 1, wherein The center cutting fixture further includes a cutting fixture disk, the cutting receiving element is disposed on the cutting fixture disk, and the cutting fixture disk is used to connect to the cutting equipment to limit the cutting receiving element on the cutting equipment.

7. The center cutting fixture for dentures according to claim 6, characterized in that, The cutting tooling disc has a locking threaded hole, and the cutting receiving part is provided with a fixing screw, which is screwed onto the locking threaded hole.

8. The center cutting fixture for dentures according to claim 7, characterized in that, The cutting receiving member has an inner groove on its side wall in the width direction, the inner groove penetrates the cutting receiving member in the vertical direction, and a locking step is provided in the inner groove; The fixing screw passes through the inner groove and engages with the locking step to lock the cutting receiving member.

9. The center sectioning tool for a dental prosthesis according to any one of claims 6-8, wherein, A limiting groove is formed on the upper surface of the cutting tooling disc, and the cutting receiving component is embedded in the limiting groove.

10. The center sectioning tool for a denture piece according to claim 1, wherein The cutting equipment is a CNC machining center, and the cutting tool is a milling cutter; The CNC machining center cuts the cured layer and the encased denture using pre-calibrated cutting parameters.

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