title: [Evaluation of clinical results on osteotome sinus floor elevation and dental implant placement (122 cases report)].
abstract: 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.
authors.affiliation: Center of Implant Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China.
authors.forename: Li-xin
authors.initials: LX
authors.lastname: Qiu
authors.forename: Xiu-lian
authors.initials: XL
authors.lastname: Hu
authors.forename: Bo
authors.initials: B
authors.lastname: Chen
authors.forename: Jian-hui
authors.initials: JH
authors.lastname: Li
authors.forename: Ye
authors.initials: Y
authors.lastname: Lin
authors.forename: Xing
authors.initials: X
authors.lastname: Wang
mesh_terms: 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