An implant is an artificial root which is placed in the jaw and grows into the bone . Implants are made of titanium and are very well excepted by the body and the surrounding bone. Implants can look like screws or hollow tubes.Implants are small, have a diameter of 3.5 to 4.1 mm, a length of 8 to 16mm, and are therefore approximately as large as a natural root. Placing of 1 or several implants is called implantati.