Preparation method of denture film layer

Abstract

The invention discloses a preparation method of a denture film layer. The film layer comprises a base layer, a first transition layer, a second transition layer and a surface layer; and the preparation method comprises the following steps: 1) selecting powdery nano-hydroxyapatite, graphene and zirconium oxide as raw materials; 2) selecting nano-hydroxyapatite as a base layer coating for later use;uniformly mixing nano-hydroxyapatite and zirconium oxide, and then, selecting the mixture as a first transition layer coating for later use; uniformly mixing nano-hydroxyapatite, zirconium dioxide and graphene, and then, selecting the mixture as a second transition layer coating for later use; and uniformly mixing zirconium dioxide and graphene, and then, selecting the mixture as a surface layercoating for later use; and 3) forming a graphene-zirconium dioxide-nano-hydroxyapatite gradient composite film layer on the surface of a denture by adopting a laser cladding method. By using the preparation method, the metallurgical bonding of each coating can be precisely controlled, the problem of coating stripping is solved, a gradient is sequentially formed among all the coatings, the producedheat stress is reduced, and the service life of the denture film layer can be greatly prolonged.

Description

technical field [0001] The invention relates to the field of dentures, in particular to a method for preparing a denture film layer. Background technique [0002] In recent years, the application value of hydroxyapatite bioceramic materials has been continuously developed, and its own defects such as poor mechanical properties, low self-strength, and insufficient toughness are gradually exposed, which limits the wide application of hydroxyapatite bioceramic materials. , It is difficult to meet the medical requirements. How to obtain the perfect combination of mechanical properties, biocompatibility and material life of hydroxyapatite bioceramics is a question discussed by material scientists. Hydroxyapatite bioceramic materials have made great progress in the research of artificial tooth roots, jaws, and bone filling materials, and have been gradually put into clinical application with success. However, the application of hydroxyapatite bioceramics is limited due to its lo...

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Problems solved by technology

[0003] However, existing coatings are formed on dentures by ion spraying technology using hydroxyapatite bioceramic material as the main component. Because the coating prepared by this method has poor bonding with dentures, it is easy to peel off and has a short lifespan.

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