Surface activation method of dental implant

Abstract

A surface activation method of a dental implant comprises: putting a titanium implant in 1-3M of H2SO4 liquid, using the titanium or titanium alloy of the titanium implant as an anode and using a Pt material as a cathode to carry out anode oxidation by using an anode oxidation method, preparing an oxidation film with a three-dimensional spherical pore microstructure on a surface, and existing round pits in different sizes and with apertures of 100-200nm in local areas; and putting the titanium implant with the oxidized anode in 3-5M of NaOH alkali solution for processing and forming a titanium gel on the surface, wherein the enriched Ti-OH groups induce the generation of calcium phosphate crystal nucleuses to form a bone-like apatite layer. The invention uses the combination of the anode oxidation method and an alkali process method for preparing an active TiO2 coating layer on the surface of the titanium alloy, the implant processed by the anode oxidation method has good compatibility with bone, and bonding strength and bone sediment yield are both obviously higher than that of the unprocessed titanium, thereby greatly improving the clinic success ratio of the dental implant.

Description

technical field [0001] The invention relates to a method for surface modification and activation of a biomedical metal implant material, in particular to a dental implant which uses anodic oxidation and alkali treatment to prepare an active coating on the titanium surface to improve the bonding strength of the implant and bone tissue The surface activation method belongs to the A61C13 / 02 technical field in the International Patent Classification. Background technique [0002] Dental implants made of metal are widely used for implantation after tooth loss. The key to the success of dental implant surgery is whether the gum bone can quickly grow to the surface of the implant and firmly bond with the surface after the implant is placed in the gum. [0003] The original planting materials used were Co-Cr alloy, corundum alumina, single crystal alumina and so on. However, the biocompatibility of Co-Cr alloy is insufficient and corrosive, and the mechanical properties of corundum...

AI Technical Summary

Problems solved by technology

However, its treatment process is relatively complicated, the operation is inconvenient, the ability to induce bone is limited, and the growth time of implants is too long.