3D printing forming method for metal dental restoration

A technology of 3D printing and molding method, applied in the field of 3D printing, can solve the problems such as chemical impurities easily embedded in the crown, the accuracy and quality error of the restoration, affecting the accuracy and the metal-ceramic bonding force, etc., to avoid trachoma and shrinkage defects. , The effect of shortening the production cycle and reducing human error

Inactive Publication Date: 2017-02-01
OPTIMAL MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used processing method of dental metal restorations is investment lost wax casting method, but the processing process is cumbersome, time-consuming, and the quality assurance rate of raw materials is low, and the accuracy and quality of the restorations will have large errors due to different operators. During the casting process, chemical impurities are easily embedded in the crown, forming a large number of shrinkage cavities and trachoma, which affect the precision and metal-ceramic bonding force
Therefore, the processing method of investment lost wax casting can no longer meet the current high-performance, automatic and rapid restoration production requirements.

Method used

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  • 3D printing forming method for metal dental restoration
  • 3D printing forming method for metal dental restoration
  • 3D printing forming method for metal dental restoration

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Take the preparation of cobalt-chromium alloy inner crown as an example. Such as figure 1 The 3D printing molding method of the dental metal restoration of the present invention is shown, and its features include:

[0032] Three-dimensional scanning: Through the blue light scanning method, high-precision scanning data can be obtained, and precise scanning of various small features in the oral cavity can be realized, and the scanning accuracy can reach within 5 μm. Obtain the patient's oral situation by directly scanning the oral cavity, and send the scanned three-dimensional data directly to the dental processing factory to improve the consistency of the restoration process.

[0033] Three-dimensional design: import the three-dimensional data of the patient's oral cavity into the 3shape dental design software, and carry out the three-dimensional design of the metal restoration according to the shape of the abutment teeth and the shape of the gums, and according to the ...

Embodiment 2

[0041] Taking the preparation of a TC4 titanium alloy stent as an example, on the basis of Example 1, the three-dimensional scanning adopts plaster model scanning to obtain the internal data of the oral cavity. After the impression is taken out from the patient's mouth by quick-setting materials such as silicone rubber, a plaster model is poured through the impression, and then the three-dimensional shape of the plaster model is scanned by a blue-ray scanner to obtain three-dimensional data of the oral cavity.

[0042] The exocad dental design software was used for the three-dimensional design, and the metal restoration was designed according to the shape of the abutment teeth, the shape of the gingiva and the condition of the jaw.

[0043] During data processing, the obtained restoration STL format file is imported into the CAMbridge data processing software, and the steps of data inspection and restoration, position placement, support addition, slicing and scanning strategy p...

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Abstract

The invention relates to a 3D printing forming method for a metal dental restoration. The method includes the steps of three-dimensional scanning, wherein three-dimensional data of an oral cavity of a patient is obtained; three-dimensional designing, wherein the appearance of the restoration is designed and derived according to the three-dimensional data; data processing, wherein a derived restoration model is at least subjected to data checking and repairing, position arranging, support adding, slicing and scanning strategy planning to obtain data suitable for 3D printing; 3D printing forming, wherein through a metal 3D printing device for selective laser welding, with micron-scale spherical metal powder as the material, the metal powder of each layer of section region of a forming substrate is melted through the laser scanning of the 3D printing device, and then a metal part is obtained through layer-by-layer overlapping; part processing, wherein the metal restoration is obtained through later-period processing. Lots of labor is saved, personal errors are reduced, the restoration is high in forming precision and good in fitting degree, and the manufacturing cycle of the restoration is greatly shortened.

Description

technical field [0001] The invention relates to a 3D printing method, in particular to a 3D printing molding method for dental metal restorations. Background technique [0002] Dental defects and edentulousness are the most common dental problems and are usually replaced with dentures. Alloy materials have become commonly used materials for dentures because of their excellent mechanical properties such as strength, hardness, wear resistance, durability and toughness. Especially alloy materials such as cobalt-chromium alloys and titanium alloys are widely used in the field of denture restoration. Porcelain crowns, metal frameworks for removable partial dentures, and metal post-cores are currently the most common metal denture restorations. [0003] At present, the commonly used processing method of dental metal restorations is investment lost wax casting method, but the processing process is cumbersome, time-consuming, and the quality assurance rate of raw materials is low, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C13/083A61C13/00
CPCA61C13/083A61C13/0004A61C13/0019A61C13/0835A61C2201/00
Inventor 刘睿诚吴利苹蒋安琪曾益伟王强陈玲莉陈军
Owner OPTIMAL MATERIAL TECH CO LTD
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