Whitening and self-cleaning coating of surface of titanium alloy dental prosthesis and preparation method of coating

Abstract

The invention provides a whitening and self-cleaning coating of a surface of a titanium alloy dental prosthesis and a preparation method of the coating. The whitening and self-cleaning coating for the surface of the titanium alloy dental prosthesis comprises a white micro-arc oxidation inner layer and a self-cleaning outer layer which are sequentially arranged from inside to outside. In addition, the preparation method of the coating for the surface of the titanium alloy dental prosthesis mainly comprises the following steps: firstly, forming the white micro-arc oxidation inner layer on the surface of a titanium alloy base material by utilizing a low-energy-consumption micro-arc oxidation technology, and then preparing the self-cleaning outer layer on the surface of the micro-arc oxidation inner layer. The coating of the invention has a simple preparation method, low cost and high wear resistance; binding force between the coating and a metallic matrix is powerful, and the color of the coating is close to that of teeth, so that the metal color of the titanium alloy matrix can be effectively shielded; and meanwhile, the surface of the coating is in a hydrophobic state, adhesion of substances such as bacteria and microorganisms can be effectively inhibited, thereby giving the surface of the prosthesis the self-cleaning characteristic.

Description

technical field [0001] The invention belongs to the technical field of oral restoration, and relates to a whitening self-cleaning coating on the surface of a titanium alloy oral restoration and a preparation method thereof. Background technique [0002] Pure titanium and titanium alloys have the characteristics of good biocompatibility, low density and excellent corrosion resistance. They are suitable for making dentures, full crowns, brackets and other oral restorations. Compared with traditional dental materials, they are safer Comfortable, but due to the large color contrast between the titanium alloy and the tooth surface, it greatly affects the appearance. At present, methods such as brushing or dipping are mainly used to prepare polymer whitening coatings such as epoxy resin on the surface of dental materials. Although these coatings have certain whitening effects, they have low hardness, insufficient bonding between the coating and the substrate, and biological Poor ...

AI Technical Summary

Problems solved by technology

[0002] Pure titanium and titanium alloys have the characteristics of good biocompatibility, low density and excellent corrosion resistance. They are suitable for making dentures, full crowns, brackets and other oral restorations. Compared with traditional dental materials, they are safer Comfortable, but due to the large color contrast between the titanium alloy and the tooth surface, it greatly affects the appearance

At present, methods such as brushing or dipping are mainly used to prepare polymer whitening coatings such as epoxy resin on the surface of dental materials. Although these coatings have certain whitening effects, they have low hardness, insufficient bonding between the coating and the substrate, and biological Poor capacitance, poor wear resistance, etc.

At the same time, bacteria and other microorganisms in the oral cavity often adhere to the surface of the teeth, which are the main factors leading to common oral diseases such as caries and periodontal tissue inflammation. Provides a growth environment that can inhibit the growth of microorganisms such as bacteria in the oral cavity for a long time

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