Acid etching surface treating method of tetragonal polycrystal zirconia ceramic implant tooth

Abstract

The invention records an acid etching surface treating method of a tetragonal polycrystal zirconia ceramic implanting tooth. A ceramic implant tooth is soaked into acid etching solution which contains hydrofluoric acid 55-65 vol.%, phosphoric acid 20-45 vol.%, treatment is conducted at a temperature of 15-35 DEG C for 12-36h. Using acid etching at normal temperature can reach the aim of increasing degree that zirconium oxide ceramic surface is uniformly roughened. According to the acid etching surface treating method of the tetragonal polycrystal zirconia ceramic implanting tooth, compared with commonly adopted surface sand blasting treatment which causes the problem that residues extruded into a coarse surface may cause the risk of tissue inflammation at a surgery patient's periphery of an implanted body, acid solution is adopted instead of sand blasting treatment, which is simple to remove, so residue problem doesn't happen.

Description

technical field [0001] The invention relates to an acid etching surface treatment method for dental implants, in particular to an acid etching surface treatment method for polycrystalline zirconia ceramic implant teeth. Background technique [0002] In recent years, due to the improvement of the concept of aesthetics and biomimetics, the number of patients who choose metal-free treatment has increased. The field of making biomedical materials is very extensive, mainly divided into four categories, metal materials, ceramic materials, polymer materials, and composite materials, and among them, ceramic materials have the best hardness, biocompatibility and chemical stability , suitable as biomedical materials. Therefore, zirconia ceramic dental implants with ivory white luster are gradually attracting attention. They are not only beautiful but also have good mechanical properties and biocompatibility, and there is no problem of metal ion release. The surface of the implant im...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the defect that the existing ceramic implants are not easy to clean, the present invention provides an acid-etching surface treatment method for polycrystalline zirconia ceramic implants

The HF and phosphoric acid in the acid etching solution used in the present invention and room temperature corrosion can reduce the potential danger of the high temperature acid etching process of the prior art, and can significantly reduce the contact angle, and there is no pre-treatment step of sandblasting, or any Grinding step to produce macro-roughness, which can reduce the chance of artificial implants being sandblasted to cause fatigue and physical properties of the material to weaken, and there is no problem that sandblasting or abrasive particles may remain on the implants