Osteotome Sinus Floor Elevation 증례의 방사선학적 관찰

Abstract

Sinus floor elevation with ostetome is an effective and less invasive technique for insufficient residual bone of maxillary posterior area. It was reported that longer implant fixtures than 9mm had higher success rate. In maxillary posterior area, however, anatomic structure, pneumatization and alveolar bone atrophy disturb installation of longer fixtures. Osteotome technique overcomes poor bone quality and makes it easy to install fixtures on insufficient residual bone area, but its blind approach could cause complications such as membrane perforation. Therefore, procedures and results of osteotome technique can be evaluated by radiographic observation. This case report examines radiographic characteristics and changes of two patients who received bone added osteotome sinus floor elevation. Both patients presented insufficient residual bone on posterior maxillary area, due to sinus pneumatization and advanced periodontal disease. Sinus augmentation were achieved by Summer’s osteotome technique in conjunction with the application of bone materials(Cerasorb􄠶, Dembone􄠶, or MBCP􄠶). Periodic radiographs showed new bone formation and remodelling around installed implant. In addition, resorption of previous sinus floor and reformation of new sinus floor were noted.