A CLINICAL STUDY OF MAXILLARY SINUS GRAFT FOR IMPLANT PLACEMENT

ABSTRACT

dentition can cause alvolar bone resorption & pneumatization of Maxillary sinus wall, which makes traditional implant placement impossible. The solution includes various methods to the posterior maxilla to provide adequate bone support for implant installation and long-term survival.--sinus floor elevation, sinus-lift graft using Lefort I osteotomy, onlay graft. This is a clinical & retrospective study on implant surgery & prosthodontic restoration with upper edentulous posterior jaw from Jan. 1990. to Jun 1997 at implant clinic of Chonbuk National University Hospital. The results obtained were as follows 1. Six hundred ninety-nine implants were placed on upper posterior jaw of two hundred seventeen patients among them one hundred sixty-five implants were placed in forty-four patients with sinus lift. 2. The height of the remained alveolar bone was classified on the base of Misch's concept. This included seventynine SA-ls, ninety-seven were successfully ninety-seven SA-2s, sixty-five SA-3s and sixty SA-4s. 3. Ninety percent of implants were successfully integrated in non0grafted area and eighty- seven percent of implants were successully integrated in sinus lift area.