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Five-axis linkage simulation machining method of dental prosthesis

A dental restoration and five-axis linkage technology, applied in metal processing equipment, manufacturing tools, milling machine equipment, etc., can solve problems such as low occlusal function, long production cycle, and poor processing shape

Inactive Publication Date: 2010-09-15
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a five-axis linkage simulation processing method for oral restorations to solve the problems of low processing accuracy, poor processing appearance, long production cycle, low occlusal function, and easy retention of rice mud in oral restorations. Improve the processing speed and accuracy of dental restorations, effectively reducing production costs

Method used

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  • Five-axis linkage simulation machining method of dental prosthesis
  • Five-axis linkage simulation machining method of dental prosthesis
  • Five-axis linkage simulation machining method of dental prosthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0062] Embodiment: Process the oral prosthesis according to the following specific steps:

[0063] (1) Reconstruct the digital model of the affected tooth

[0064] In the dental restoration CAD / CAM system, the original features of the symmetrical teeth on the patient’s dentition and their occlusal teeth are collected, and the digital model of the affected tooth is reconstructed. The digital model is a triangular mesh model, that is, an STL model, such as image 3 As shown, a series of triangular slices are used to approximate the actual tooth occlusal surface;

[0065] (2) Discrimination of feature surface type

[0066] When the length of the groove is shortened to a certain extent, it degenerates into a pit, and when the length of the crest shortens to a certain extent, it degenerates into a point. It is impossible to strictly distinguish the groove from the pit, the crest from the tip, the groove from the pit, The method of distinguishing crests and peaks is as follows: Fi...

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Abstract

The invention discloses a five-axis linkage simulation machining method of a dental prosthesis, which comprises the following steps: firstly, carrying out automatic identification and extraction on the characteristic surfaces of the tips, iliac crests, nests and grooves of the dental prosthesis; then, determining the machining tool path of five-axis linkage high-speed milling according to the original appearance of the occlusal surface of an offending tooth and the changing rule of the normal vectors of all points on each characteristic surface; and finally moving a micro-diameter ball-head cutter under the command of spline interpolation machining numerical control codes along the machining tool path to obtain the dental prosthesis by milling. The simulation machining method of the invention solves the problems of low machining accuracy, poor machining pattern, long manufacturing period, poor occlusion function and easy detention of meal residue of the existing dental prosthesis, improves the machining speed and accuracy of the dental prosthesis, and effectively reduces the manufacturing cost.

Description

technical field [0001] The present invention relates to the manufacture method of oral denture, according to International Patent Classification (IPC) classification belongs to human life necessities, health care division, dentistry, oral cavity or dental hygiene big class, dental surgery subclass, dental crown, the manufacture of dental crown in the oral cavity The invention relates to the technical field of fixed dental crowns, in particular to a five-axis linkage simulation processing method for oral restorations. Background technique [0002] Since the French professor Duret used industrial CAD / CAM technology to produce the first metal full crown in the 1980s, the design and production technology of oral restorations, namely oral dentures, commonly known as dentures, has undergone revolutionary changes. More than 10 kinds of oral denture CAD / CAM systems have appeared successively, such as the Cerec3D system of Sirona Company in Germany, the Procera system of DDS Company ...

Claims

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Application Information

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IPC IPC(8): B23C3/00
Inventor 孙全平陈小岗
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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