Preparation of titanium-based artificial teeth with plla/nha surface-active coatings

Abstract

The invention provides a preparation method of a titanium-based airtifical tooth with a poly L lactic acid (PLLA) / nano hydroxyapatite (nHA) surface active coating. The preparation method comprises the four steps of preparing a titanium artificial tooth blank, spraying a polyether ether ketone (PEEK) resin primer, preparing and coating a PLLA / nHA composite material and degrading the surface. According to the preparation method disclosed by the invention, PEEK resin is utilized as a fusing attachment medium, the PLLA / nHA composite material is utilized as a coating to be firmly sprayed on the surface of an implantation portion of the titanium artificial tooth blank, then poly L lactic acid on the surface of the coating is partially degraded through the characteristic that the poly L lactic acid is more quickly degraded than nano hydroxyapatite, nano hydroxyapatite particles on the surface of the coating are more exposed out, and bone induction and synosteosis are more facilitated. According to the artificial tooth prepared in the preparation method, excellent characteristics of the PLLA / nHA composite material can be fully given to play, degrading time conforms to a bone growth period, biocompatibility is good, bond inductivity is good, synosteosis strength is high, and a metal ion allergy phenomenon is prevented from being generated.

Description

technical field [0001] The present invention relates to a preparation method of artificial teeth, in particular to a preparation method of titanium-based artificial teeth with poly-L-lactic acid (PLLA) / nanometer hydroxyapatite (nHA) surface active coating on the implant part, which belongs to dental medical materials technology field. Background technique [0002] The Swedish doctor Bremark found that titanium has good biocompatibility and can combine well with bone. It has been applied to dental implants for decades. People are used to using titanium as dental implant materials, but Titanium as a dental implant material also has some disadvantages, such as the color is black, it will produce stress shielding, it will release metal ions and cause potential metal allergy, etc. In order to solve these problems, a layer of bionic coating is usually applied on its surface as an improvement. , but due to the large difference in expansion coefficient, the combination of the biomi...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a preparation method of titanium-based artificial teeth with PLLA / nHA surface active coating on the implanted part, which uses PEEK resin as the medium, and adopts a special treatment process to apply the PLLA / nHA composite material to artificial teeth. On the tooth coating, the artificial tooth prepared by this method can give full play to the excellent characteristics of the PLLA / nHA composite material, and effectively solve the shortcomings of the current pure titanium artificial tooth