증례보고 : Osteotome Sinus Floor Elevation Procedure 를 이용한 임프란트 매식

Maxillary sinus has an anatomic limitation to bone support available for dental implant. When there is less than 10mm of bone remaining between the upper alveolar ridge crest and the maxillary sinus floor, bone augmentation should be considered. In 1994,Summers reported two sinus floor elevation techniques of immediate implant insertion, using osteotomes, for patients who have at least 5mm of bone remaining between the alveolar ridge crest and the maxillary sinus floor. One technique is osteotome sinus floor elevation (OSFE)procedure in which uses osteotomes to elevate the sinus floor. The other is bone-added OSFE (BAOSFE)procedure in which bone graft is added into osteotomy site. Both procedures conserve all of the remaining bone and selectively displace it upward, thereby raising sinus floor. This study was aimed to evaluate the long-term success rate of implants which had been placed by osteotome sinus floor elevation procedure. Between February 1996 and June 1998,10 implants were placed using OSFE or BAOSFE procedures in 6 patients who had at least 6mm of bone remaining between the alveolar ridge crest and the sinus floor. OSFE procedures were performed in patients,2 4mm sinus floor elevation was needed, whereas BAOSFE procedures were done in patients, more than 4mm sinus floor elevation was needed. During the mean follow-up period of 4 years 4 months (3 years 6 months 5 years 9 months), no implant was failed and all patients showed good functional results. OSFE and BAOSFE procedures seemed technically easier and less invasive compared to conventional sinus lift procedure. And both procedure have good success rate.