Dental implants are permanent replacements for missing teeth. An artificial root (usually made of titanium) is installed in the jaw, and then a prosthetic tooth or bridge is fitted to that root. The implant – the root part of your new tooth – may look like a screw, a blade, or a cylinder. This is called an endosteal implant and is the most common type of dental implant, though oral surgeons will sometimes choose a subperiosteal implant if you do not have enough bone height to accommodate a normal endosteal implant. A subperiosteal implant goes on top of the jaw, rather than being inserted into it, and posts that hold the prosthetic tooth in place protrude up from the gum. This is a good option if you have a great deal of damage or deterioration to your jawbone.