Evaluation of clinical results on osteotome sinus floor elevation and dental implant placement (122 cases report) / 中华口腔医学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To evaluate the clinical results of osteotome sinus floor elevation technique in the posterior maxillary region.</p><p><b>METHODS</b>A total of 122 patients underwent osteotome sinus floor elevation from July 1998 to July 2004. Forty-eight cases were male and 74 were female. The mean age was 46.5 years (between 20 and 69). A total of 157 implants were placed and restored. The mean follow-up time was 29.7 months (between 14 and 84 months). Clinical examination and radiographs were conducted. All the patients with 8 - 11 mm height of residual bone in the posterior maxilla underwent sinus floor elevation and implant placement using osteotome without any bone grafts simultaneously. The elevation height was 2 - 5 mm. Healing abutments were connected at the same time of implant placement with insertion torque over 0.25 N.m and the final prostheses were restored after 3 - 4 months. Implants were submerged if the insertion torque was less than 0.25 N.m. Second-stage operation was conducted 3 - 4 months later and the implants were restored afterwards.</p><p><b>RESULTS</b>Sinus membrane perforation was observed in 12 cases, no sinus complication was observed during the follow-up. All of the 157 implants gained osteointegration and were restored. No implant lost was observed during the follow-up. All the patients were satisfied with the final prostheses.</p><p><b>CONCLUSIONS</b>Osteotome sinus floor elevation without any bone graft was a predictable and safe technique. It could be used in the maxillary posterior area implant placement with residual bone volume of 8 - 11 mm.</p>