Making method for bionic ceramic dental prosthesis

Abstract

The invention relates to a making method for a bionic ceramic dental prosthesis. The method comprises the steps that conventional 3mol% yttrium-stabilized zirconium dioxide ceramic with high strengthand low transparency and ceramic with high transparency are selected as prefabricated powder; a blank block / disc is pressed in a layered mode; in a transition buffer layer from the lower surface of ablank to the upper surface, the proportion of the 3mol% yttrium-stabilized zirconium dioxide ceramic is gradually decreased from 100% to 0, and the proportion of the ceramic with low strength and hightransparency is gradually increased from 0 to 100%; an occlusal surface or an attractive area of a CAD digital model of the dental prosthesis is placed on a bionic performance / color layer, and an axial surface area is placed on a high-strength anti-fracture layer; and making is completed by utilizing dental prosthesis manufacturing equipment. The method has the advantages that the problems that ajaw tooth is excessively worn by a high-strength single-layer full zirconia prosthesis, no stress buffer exists in the all-ceramic prosthesis implanting process, and the prosthesis is prone to beingfractured in the long time when totally adopting a bionic abrasion-resistant ceramic material can be solved, and meanwhile, the bionic color effect of the prosthesis can be achieved.

Description

technical field [0001] The invention relates to the production of a dental prosthesis, in particular to a production method of a bionic ceramic dental prosthesis. Background technique [0002] At present, zirconia has become a commonly used material for repairing tooth defects and dentition defects due to its excellent biocompatibility and bending strength. However, due to the overstrengthening of the mechanical properties of the currently used full zirconia crowns, there are problems of excessive wear on the opposing teeth during clinical use and no stress buffering during implant all-ceramic restorations. And because the color is single, it cannot meet the needs of aesthetic restoration. [0003] The invention can solve the problems of high strength, single-color single-layer full zirconia restoration on the excessive wear of the opposing teeth and insufficient aesthetic transparency, the problem of no stress buffering when implanting all-ceramic restorations, and the res...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above deficiencies, the present invention provides a method for making a bionic ceramic dental restoration, which can solve the problems of excessive wear and tear on the opposing teeth of the high-strength, single-color single-layer full zirconia restoration and the problem of insufficient aesthetic transparency. The problem of no stress buffer in porcelain restoration, the problem of long-term fracture of the restoration when all bionic and wear-resistant ceramic materials are used, and the problem of interlaminar fracture of the double-layer ceramic restoration due to the difference in sintering shrinkage ratio, can be achieved in The local wear performance of the occlusal surface is bionic (synchronous with the speed of physiological wear, equal wear), and at the same time, it realizes the protection of the natural tooth root and the osseointegration interface of the implant when subjected to excessive occlusal force, and ensures high overall strength and is not easy to break. The bionic color effect of the restoration can be realized, which is conducive to popularization and application