Method for manufacturing dental full-crown prosthesis with optimized material elasticity modulus distribution

Abstract

The invention discloses a method for manufacturing a dental full-crown prosthesis with optimized material elastic modulus distribution, which comprises the following steps of: A, constructing a model: after the tooth of a patient is prepared, scanning in the mouth to obtain digital impression data, according to related anatomical sizes, constructing a three-dimensional model with a tooth preparation body and 4-8 layers of layered full-crown prostheses for jaw teeth and occlusion relations; b, further importing the layered full-crown prosthesis and tooth preparation model into finite element analysis software, setting corresponding parameters, and optimizing and establishing elastic modulus distribution of 4-8 layers of full-crown models; c, according to the elasticity modulus distribution data, obtained through optimization, of the 4-8-layer full-crown model, preparing the dental full-crown prosthesis with individualized and optimized elasticity modulus distribution by 3D printing. The service life of the full-crown restoration can be effectively prolonged, clinical complications such as ceramic cracking and fracture are reduced, and the elasticity modulus distribution of the full-crown restoration is simpler than that of a full-layer gradual-change functionally graded material in the aspect of manufacturing.

Description

technical field [0001] The invention relates to the technical field of dental crown restorations, in particular to a method for manufacturing a dental crown restoration that optimizes the elastic modulus distribution of materials. Background technique [0002] With the development of dental ceramic materials, the aesthetics, biocompatibility and service life of all-ceramic restorations have been significantly improved. However, the failure rate of porcelain collapse and fracture of all-ceramic restorations in clinical practice is still high, reaching 13.9%- 16.6%, how to reduce failure behaviors such as porcelain collapse and fracture of porcelain restorations, and improve its overall structural reliability and service life is still a major and urgent problem faced by clinical and scientific research workers in stomatology. It is worth noting that the same As a brittle material, human enamel seldom collapses, which may have an important relationship with the gradient distrib...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for making a dental full crown restoration with optimized material elastic modulus distribution. 1. There is a large difference in the elastic modulus between the core porcelain and the dentin, which leads to stress concentration at the interface between the veneer-ceramic and the core-ceramic dentin due to the difference in deformation, and then leads to fracture or collapse of the restoration. Failure, which reduces the service life of the dental restoration and affects the overall practicability of the dental restoration

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