Immediate implant placement has become an acceptable treatment in dentistry and oral maxillofacial surgery for reducing the treatment period and utilizing extraction socket. From the viewpoint of the healing of extraction socket and periodontology during implantation, integrity of the soft tissue and hard tissue after loss of tooth should be considered. The advantages of the immediate implantation after extraction is prevention of natural buccal or labial alveolar bone loss and is available to healing of extraction socket and osteogenesis. But osteointegration is affected to the defect of soft tissue and alveolar bone after extraction. And healing condition of extraction socket is related to implant-prosthesis treatment and oral hygiene.