Most dental implants are made of titanium. Titanium is an excellent metal for use in the human body because it is very biocompatible and resistant to corrosion. This is the same metal that is typically used if you have a joint replacement. The crown, which sits on top of your implant is typically made of zirconia. Zirconia is an extremely strong material that has the esthetics of porcelain but a strength similar to that of metal.