A manufacturing method of dental full crown restoration with optimized material elastic modulus distribution

Abstract

The invention discloses a method for making a dental full crown restoration with optimized material elastic modulus distribution. The steps are as follows: Step A: build a model: after the preparation of the patient's tooth body is completed, the digital impression data is obtained by intraoral scanning, and according to Construct a 3D model with tooth preparations and 4‑8 layered full crown restorations related to anatomical dimensions, opposing teeth and occlusal relationships; Step B: further import the layered full crown restorations and tooth preparation models Finite element analysis software, set the corresponding parameters, and optimize the elastic modulus distribution of the 4-8-layer full crown model; Step C: According to the optimized distribution data of the elastic modulus of the 4-8-layer full crown model, use 3D Printing to prepare dental full crown restorations with individually optimized elastic modulus distribution. This method can effectively improve the service life of the full crown restoration and reduce clinical complications such as ceramic chipping and fracture, and its elastic modulus is distributed in the production, which is simpler than that of the full-thickness functionally graded material.

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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