Teeth implants are comparable to replaced healthy natural teeth. A dental implant is an artificial tooth-root, usually casted out of titanium, a metal that is fully accepted by the human body. The implant is inserted into the jawbone in place of a missing tooth. During the healing period, natural bone cells integrate with minuscule grooves on the surface of the implant. After healing is complete, a crown, or a fixed bridge, is anchored to the implant. Dental implants may replace a single lost tooth or several missing teeth, and function just like original natural teeth do.