The use of dental implants to replace missing tooth is fast becoming an alternative to fixed replacement of tooth, there are two approaches for replacement of missing tooth with endosseous implants, one approach places the top of implant at the alvolar crest an the and the mucosa is sutered over the implant, the second approach places the gingival former or abutment coronal to alvolar crest and the mucosa is sutered around the implant, avalible in different shapes, sizes, and length dental implants are crafted from different materials with different surface properties, among the most desired characterstics of an implant are thoose that ensure that the tissue implant interface will be quickly established

and firmly maintianed, failure of endosseous implants are rare and can be due to implant factors like anatomy, occlusion, systemic health, microbial bio-film, host immuno imflamatory responses and genitcs increase the chances of impalnt failure, in general factors related to patient is the major reason for implant failure,than the implant itself. to achieve good esthetic results especially in esthetically important areas, it is nice to have a through knowledge of anatomic, biologic, surgical and prosthetic principles, to achieve harmonious relation to surounding tooth, endosseous implants have become an intergral part of dental reconstruction in partially and fully edentolous patients, the long term sucess of an implant is not related alone to implant or surgical procedure for implant placement, but also on the maintanence care given to gingival tissues also, so that the relation of the epithelium, connective tissue and bone to the implant is maintained properly