title: Effect of the osteotome technique in cases of deficient edentulous ridge.
abstract: OBJECTIVE
  The use of dental implants may be limited by lack of sufficient bone. The effectiveness of the alveolar ridge bone-spreading technique in the maxilla was compared with the standard technique. Bone spreading is a technique in which hand osteotomes are used to progressively enlarge the remaining deficient edentulous ridge to enable placement of dental implants.
  
  
  METHODS
  In the test group (bone spreading), 72 patients received 126 implants. Thirty-six patients with 63 implants placed with conventional implant preparation served as a control group. Measurements of outcome were implant failure and complications after therapy. Kaplan-Meier curves were used to depict time from implant placement to implant failure or complication.
  
  
  RESULTS
  Six complications were observed after placement of the implants (3 implant failures, peri-implant inflammation in 2 implants, and 1 exposure of rough implant surface). There was a trend toward more implant failures in the control group.
  
  
  CONCLUSIONS
  Results of the ridge-spreading technique seem to be similar to those of the standard technique. However, these results should be regarded with caution because of the small number of complications.
authors.affiliation: Department of Prosthodontics, School of Dentistry, University of Heidelberg, Heidelberg, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Rammelsberg
authors.forename: Olaf
authors.initials: O
authors.lastname: Gabbert
authors.forename: Marc
authors.initials: M
authors.lastname: Schmitter
authors.forename: Andreas
authors.initials: A
authors.lastname: Koob
authors.forename: Maria
authors.initials: M
authors.lastname: Pritsch
authors.forename: Clovis Mariano
authors.initials: CM
authors.lastname: Faggion
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000540:Alveolar Ridge Augmentation / Q000295:instrumentation*; D016009:Chi-Square Distribution; D003758:Dental Implantation, Endosseous / Q000009:adverse effects / Q000379:methods*; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D005260:Female; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008437:Maxilla / Q000601:surgery; D008875:Middle Aged; D010027:Osteotomy / Q000295:instrumentation*; D057873:Peri-Implantitis / Q000209:etiology; D010865:Pilot Projects; D012189:Retrospective Studies; D018709:Statistics, Nonparametric; D055815:Young Adult