Hydroxyapatite (HA) is commonly used as a coating for orthopedic implants, where it is thought to improve implant biocompatibility. Current methods of coating implants rely on high temperature methods, which results in inconsistent coatings that can quickly break down in the body. SolFgel processes rely on low temperatures, and have been found to produce highly consistent, crystalline coatings. A HA solFgel dipFcoating process for flat samples was developed by students in previous semesters. The purpose of this project is to build on that work and develop a method for coating irregular shaped titanium parts in HA using that solFgel process, and to test the biocompatibility of these coated parts. Cylindrical tubes of various radii will be coated using the solFgel dipping process. Adhesion of the coatings will be tested using a standard tape test, ASTM D3359. The biocompatibility of these parts will be tested quantitatively using Osteoblast cells.

Hydroxyapatite Coating on Titanium Irregular Shapes

Advisor: Dr. Guna Selvaduray

Authors: Alex DeHaan, Maritza Fuerte