Implants are replacement tooth roots, made of metal that are placed into the bone socket where teeth are missing. It functions as a natural tooth, promotes better hygiene, stimulates the bone, and preserves the right masticatory function. Then the crown comes into place, covering the replacement tooth. Implants can be painful, expensive, and take a long period of time, however they have a high level of success and can last up to 15 years. Success or failure of an implant depends on the health and oral hygiene of the patient.