Method for repairing denture covered by titanium bracket

Abstract

The invention provides a titanium stent covered false tooth repairing method which comprises the following steps: S1, acquiring digital three-dimensional data and occlusion relation of upper and lower jaw dentitions of a patient through digital oral cavity scanning; s2, performing digital design based on the data in the step (1), and adjusting parameters to obtain a restoration three-dimensional data model; s3, segmenting the three-dimensional data of the prosthesis according to parts to obtain digital data of the titanium metal stent, the sleeve inner crown and the sleeve outer crown; s4, designing a connecting handle; s5, the titanium metal support data are imported into 3D printing titanium additive equipment for manufacturing; s6, CAD / CAM mechanical cutting is adopted to manufacture an inner crown, an outer crown and a connecting handle of the sleeve; s7, the sleeve outer crown, the connecting handle and the titanium metal support are welded into a whole through a laser welding machine, and a denture covering titanium support is formed; and S8, trying on and adhering a titanium metal inner crown in the oral cavity of the patient. By means of the method, efficient and stable connection of the titanium support and the telescopic crown is achieved, and the accuracy and long-term retention force of a false tooth in-position path are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oral prosthetics, in particular to a titanium bracket covering denture repair method. BACKGROUND

[0002] Covering dentures, as a special type of removable partial dentures, are supported on the retained tooth roots or crowns through the covering and support of the base, which has significant advantages such as reducing the base area and improving the wearing comfort. However, traditional covering dentures mainly use the lost-wax casting process to manufacture titanium brackets, but this process has some obvious defects. First, dimensional deviations are easily generated during the casting process, which will affect the fit of the denture and the abutment, thereby affecting the use effect. Second, casting defects such as air bubbles and shrinkage holes can easily cause cracks or even fractures of the bracket, which can greatly reduce the service life of the restoration. Finally, this process requires multi-step manual operation, which is not only low in efficiency but also high in cost.

[0003] In recent years, 3D printing technology (laser additive manufacturing) has been introduced into the field of titanium bracket manufacturing. This technology can directly form complex structures by layer-by-layer stacking of materials. Compared with traditional processes, 3D printing technology has significant advantages such as high precision, high efficiency, low cost, and customizability. However, despite these advantages, 3D printing technology still has some limitations. First, due to the current printing precision, 3D printing technology cannot directly manufacture high-precision inner and outer crowns in sleeve crown restorations, which require micron-level fit to ensure retention. Second, traditional processes cannot reliably connect 3D-printed titanium brackets with sleeve crowns manufactured through cutting processes, which leads to insufficient overall stability of the restoration.

[0004] Therefore, although 3D printing technology has great potential in the manufacture of titanium brackets, the existing technology has not yet achieved a complete solution for fully digital titanium bracket covering dentures. Currently, 3D printing technology can only independently produce bracket components, while sleeve crowns still rely on CAD / CAM cutting. Due to the lack of an efficient and stable connection method, 3D-printed brackets and cutting-processed sleeve crowns cannot be well combined, which can affect the accuracy of the seating path and the long-term retention of the denture. SUMMARY

[0005] The present application aims to provide a titanium bracket covering denture repair method to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: the present application provides a titanium bracket covering denture repair method, comprising the following steps:

[0007] S1, obtaining digital three-dimensional data of the upper and lower dental arches and occlusion relationship of the patient through digital oral scanning;

[0008] S2, performing digital design based on the data of step (S1), adjusting parameters, and obtaining a three-dimensional data model of the restoration;

[0009] S3, segmenting the three-dimensional data of the restoration according to parts to obtain digital data of the titanium metal support, the sleeve inner crown, and the sleeve outer crown;

[0010] S4, designing a connecting handle;

[0011] S5, importing the titanium metal support data into a 3D printing titanium additive equipment for manufacturing;

[0012] S6, using CAD / CAM mechanical cutting to manufacture the sleeve inner crown, the sleeve outer crown, and the connecting handle;

[0013] S7, using a laser welding machine to weld the sleeve outer crown, the connecting handle, and the titanium metal support into a whole to form a titanium support of the overdenture;

[0014] S8, trying on and cementing the titanium metal inner crown in the patient's mouth;

[0015] S9, arranging teeth on the titanium support and determining the occlusion relationship to complete the manufacturing of the titanium metal overdenture.

[0016] Further, the sleeve inner crown and the sleeve outer crown are manufactured by using the CAD / CAM cutting method, the titanium support is manufactured by using the 3D printing method, and the two are connected by the connecting handle through the welding method.

[0017] Further, the connecting handle comprises:

[0018] a long handle-shaped accessory welded with the titanium cutting outer crown;

[0019] a long handle-shaped card slot embedded in the 3D printed titanium support;

[0020] The long handle-shaped accessory and the card slot are retained by mechanical friction, and the titanium metal outer crown, the connecting handle, and the titanium metal support are welded to form a whole overdenture.

[0021] The present application has at least the following advantages:

[0022] The application provides a titanium support covering denture repair method, which realizes efficient and stable connection of the titanium support and the sleeve crown, improves the accuracy of the denture in-place path and long-term retention force. Through the combination of digital design and 3D printing and CAD / CAM cutting technology, the application not only overcomes the problems of size deviation, casting defects and low efficiency of the traditional casting process, but also solves the limitations of the 3D printing technology in the production of high-precision inner crown and outer crown. The design of the connecting handle also cleverly realizes the reliable connection of the titanium support and the sleeve crown, ensuring the overall stability and service life of the prosthesis. In addition, the repair method of the application simplifies the production process, reduces the production cost, and provides a more accurate, comfortable and durable titanium support covering denture repair scheme for patients, which has a good application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the sleeve outer crown and the connecting handle in the application;

[0024] Figure 2 It is a schematic diagram of the sleeve outer crown, the connecting handle and the titanium support in the application;

[0025] Figure 3 It is a schematic diagram of the sleeve crown inner crown, outer crown and connecting handle in the application;

[0026] Figure 4 It is a detailed parameter schematic diagram of the connecting handle in the application;

[0027] Figure 5 It is a schematic diagram of the titanium support sleeve crown covering denture in the application;

[0028] Figure 6 It is a physical picture of the sleeve outer crown treated by honeycomb sandblasting in the application;

[0029] Figure 7 It is a physical picture of the maxillary covering denture, front teeth and left jaw in the application;

[0030] Figure 8 It is a physical picture of the maxillary covering denture, front teeth and right jaw in the application. DETAILED DESCRIPTION

[0031] Unless otherwise defined, all technical and scientific terms used in the present specification are intended to have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the specification of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used in the present specification includes any and all combinations of one or more related listed items.

[0032] EMBODIMENT

[0033] AsFigure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 A titanium bracket overdenture repair method can include the following steps:

[0034] S1、First, obtain the digital three-dimensional data of the upper and lower jaw dentition and the occlusion relationship of the patient by digital oral scanning technology;

[0035] S2、Next, based on the data obtained in step S1, perform digital design, and obtain the three-dimensional data model of the prosthesis by adjusting the relevant parameters;

[0036] Specifically, a 3Shape Trios optical scanner (from Denmark) can be used to obtain the digital three-dimensional data of the upper and lower jaw dentition and the occlusion relationship;

[0037] Then, import these data into 3Shape design software (also from Denmark), and generate a three-dimensional model of the prosthesis by adjusting the parameters.

[0038] S3、After that, the three-dimensional data of the prosthesis is segmented according to different parts, so as to obtain the digital data of the titanium metal bracket, the sleeve inner crown, and the sleeve outer crown;

[0039] S4、Design the connecting handle;

[0040] Specifically, the connecting handle can be designed according to the design parameters shown in Figure 4

[0041] The long handle-shaped accessory needs to be welded on the titanium cut outer crown;

[0042] The titanium bracket needs to reserve a long handle-shaped card slot (the groove size matches the accessory);

[0043] The inclination angle of the right jaw is set to 45°±5°, and the inclination angle of the left jaw is set to 60°±5° (as shown in Figure 4

[0044] S5、Import the titanium metal bracket data into the 3D printing titanium additive equipment for production;

[0045] S6、Use CAD / CAM mechanical cutting technology to make the sleeve inner crown, outer crown and connecting handle;

[0046] Specifically, the three-dimensional model of the prosthesis is segmented into independent component data:

[0047] Titanium metal bracket (3D printed component, made by Kailian Laser Technology Titanium Additive Equipment)​​

[0048] The sleeve inner crown and the sleeve outer crown are cut by CAD / CAM (cutting parts are cut by X-mill 630 cutting machine), and specifically, the sleeve outer crown needs to be treated by honeycomb sandblasting (as shown in Figure 6 ) to enhance the bonding force with the base;

[0049] S7, using a laser welding machine to weld the sleeve outer crown, the connecting handle and the titanium metal support into one whole, thereby forming a titanium support of the covering denture;

[0050] Specifically, an ALPHALASER VL 50 laser welding machine (from Germany) is used to operate in the order shown in Figure 2 .

[0051] ①Insert the long handle-shaped accessory of the connecting handle into the clamping groove of the titanium support (retention is achieved by mechanical friction);

[0052] ②Weld the titanium metal outer crown, the connecting handle and the titanium support in sequence to form a whole covering denture (as shown in Figure 5 ).

[0053] S8, try on and cement the titanium metal inner crown in the patient's oral cavity;

[0054] S9, arrange teeth on the titanium support and determine the occlusal relationship to complete the production of the titanium metal covering denture.

[0055] Specifically,

[0056] try on and cement the titanium metal inner crown in the patient's oral cavity (as shown in Figure 3 .

[0057] Place the welded titanium support covering denture in place;

[0058] Arrange the resin teeth and the base on the titanium support to complete the production of the restoration (as shown in Figures 7-8 ).

[0059] Among them, the sleeve inner crown and the sleeve outer crown are produced by CAD / CAM cutting method, the titanium support is produced by 3D printing, and the two are connected by the connecting handle by welding.

[0060] Among them, the connecting handle includes:

[0061] a long handle-shaped accessory for welding the titanium cutting outer crown;

[0062] a long handle-shaped clamping groove embedded in the 3D printed titanium support;

[0063] The long handle-shaped accessory and the clamping groove are retained by mechanical friction, and the titanium metal outer crown, the connecting handle and the titanium metal support are welded into one whole covering denture.

[0064] This method successfully realizes the precise production and efficient connection of titanium framework and sleeve crown by combining digital design technology with 3D printing technology and CAD / CAM cutting technology. First, the digital oral scanning technology is used to accurately obtain the data information in the patient's mouth, which provides a solid foundation for subsequent digital design and production. Then, through 3D printing technology, we produce titanium framework with high precision, high efficiency and relatively low cost. This method effectively overcomes the problems of size deviation and casting defects commonly found in traditional casting process.

[0065] At the same time, using CAD / CAM cutting technology, we produce sleeve inner crown, outer crown and connecting handle, which further improves the precision and stability of these components. Especially the design of the connecting handle, which is an important highlight of this invention. The design of the connecting handle makes the connection between the titanium framework and the sleeve crown reliable, ensuring the stability of the entire restoration. In this way, not only the accuracy of the denture seating path is improved, but also the long-term retention force is enhanced.

[0066] In addition, this method also effectively reduces the production cost by simplifying the production process. Finally, it provides a more precise, comfortable and durable titanium framework overdenture repair solution for patients. This solution not only improves the repair effect, but also enhances the patient's use experience, making the titanium framework overdenture repair process more efficient and economical.

[0067] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention, and are not limited thereto; under the idea of the present invention, the technical features of the above examples or different examples can also be combined, the steps can be implemented in any order, and there are many other changes of the different aspects of the present invention as described above. In order to be simple, they are not provided in detail; although the present invention has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for restoring a titanium framework overdenture, characterized in that, Includes the following steps: S1. Obtain digital three-dimensional data of the patient's upper and lower jaw dentition and occlusal relationship through digital oral scanning; S2. Based on the data from step (S1), perform digital design, adjust parameters, and obtain a three-dimensional data model of the restoration. S3. Divide the three-dimensional data of the restoration into parts to obtain digital data of the titanium metal framework, inner sleeve crown, and outer sleeve crown; S4. Design the connecting handle; S5. Import the titanium metal bracket data into the 3D printing titanium additive manufacturing equipment; S6. The inner and outer crowns of the sleeve and the connecting handle are manufactured using CAD / CAM mechanical cutting. S7. Use a laser welding machine to weld the sleeve crown, connecting handle and titanium metal bracket into a whole to form a titanium bracket for the overdenture. S8. Try on and cement the titanium inner crown in the patient's mouth; S9. Arrange teeth on the titanium framework and determine the occlusal relationship to complete the fabrication of the titanium overdenture.

2. The method for restoring a titanium framework overdenture according to claim 1, characterized in that, The inner and outer crowns of the sleeve are manufactured using CAD / CAM cutting, while the titanium bracket is manufactured using 3D printing. The two are connected by welding through a connecting handle.

3. The method for restoring a titanium framework overdenture according to claim 1, characterized in that, The connecting handle includes: Long-handled attachment for welding titanium-cut outer crown; Long, handle-shaped slots embedded in a 3D-printed titanium bracket; The long-handled attachment is fixed to the slot by mechanical friction, and the titanium outer crown, connecting handle, and titanium frame are welded together to form an integral overlay denture.

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