The so called Osseointegration means a natural union of implant and alveolar bone. As implant is just planted into alveolar bone, after their first contact, bone cell starts adhering to and uniting with the surface of titanium metal. Afterwards, calcification occurs. By this process, firmed bon tissue is tightly embedded with implant. The whole osseointegration processes is slow and requires a period of 3 to 6 months. After osseointegration is completely finished, implant is bearable to the force of chewing. Hence, normally prosthesis is not installed until 3 to 6 months later following implantation.