This is somethin interestin that I thought might have use in your project.
I was a dental assistant for 8 years. We had a patient that had had an implant done, (tooth implant, metal implanted into the bone, then a crown put on what extends through the gums. Looks like a real tooth) Anyway, this patient had an implant done, and six months or so later started developing parkinson's symptoms. This went on for a couple of years. He kept getting worse and worse. The dr's kept doing tests after tests trying to determine what was wrong. They kept telling him it was parkinson's disease, but could find no prove other than his physical problems.
After 2 years of this, he finally found a dr. that linked the implants to his symptoms. His body was rejecting the metal that was implanted in the jaw bone. It was just a different type of rejection. He had the implant removed and within a week all his parkinson's symptoms disappeared.
Don't know if this is anything that will help you on your project, but I thought it was interesting, and has me convinced I'll never have an implant done.
