[Evaluation of clinical results on osteotome sinus floor elevation and dental implant placement (122 cases report)].
OBJECTIVE
To evaluate the clinical results of osteotome sinus floor elevation technique in the posterior maxillary region.


METHODS
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.


RESULTS
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.


CONCLUSIONS
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.
Qiu
Li-xin
LX
Center of Implant Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China.
Hu
Xiu-lian
XL
Chen
Bo
B
Li
Jian-hui
JH
Lin
Ye
Y
Wang
Xing
X
D000328:Adult; D000368:Aged; D003757:Dental Implantation / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008443:Maxillary Sinus / Q000601:surgery*; D008875:Middle Aged; D016388:Tooth Loss / Q000601:surgery*; D016896:Treatment Outcome; D055815:Young Adult