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Scientific article
English

Osteotome sinus floor elevation technique without grafting material: 3-year results of a prospective pilot study

Published inClinical oral implants research, vol. 20, no. 7, p. 701-707
Publication date2009
Abstract

OBJECTIVE: In a prospective pilot study, short< or =10 mm ITI-SLA implants were placed in the resorbed posterior maxilla by means of an osteotome sinus floor elevation (OSFE) procedure without grafting material. This paper presents 3-year data assessing bone-level changes around implants. MATERIAL AND METHODS: Twenty-five implants were placed in 17 patients to rehabilitate 16 molar and nine premolar sites. The mean residual bone height (RBH) was 5.4 +/- 2.3 mm. A healing period of 3-4 months was allowed before abutment tightening. Most implants (21/25) were 10 mm long, and the others were 8 and 6 mm long. At the 3-year control, endo-sinus bone gain, implant length protruding into the sinus and crestal bone loss (CBL) were measured on periapical radiographs. RESULTS: All implants fulfilled the survival criteria. Despite the absence of grafting material, implants were embedded into newly formed bone tissue. All implants gained endo-sinus bone; the mean gained bone was 3.1 +/- 1.5 mm. The residual protrusion length decreased from 4.9 +/- 2.1 to 1.8 +/- 2.1 mm. CBL was 0.9 +/- 0.8 mm. CONCLUSIONS: This study confirms that the OSFE procedure without grafting material is sufficient to create bone beyond the natural limit of the sinus. On the mid-term of 3 years, the technique was found to be predictable in the posterior maxilla when the RBH is limited. Implants gained endo-sinus bone despite the lack of grafting material. Bone gain was still improving over the first-year control. No shrinkage of the augmented area was observed.

Keywords
  • Adult
  • Aged
  • Alveolar Bone Loss/radiography/surgery
  • Alveolar Process/pathology/radiography
  • Alveolar Ridge Augmentation/methods
  • Dental Abutments
  • Dental Implants
  • Dental Prosthesis Design
  • Female
  • Follow-Up Studies
  • Humans
  • Image Processing, Computer-Assisted
  • Male
  • Maxilla/surgery
  • Maxillary Sinus/surgery
  • Middle Aged
  • Osseointegration/physiology
  • Osteogenesis/physiology
  • Osteotomy/instrumentation/methods
  • Pilot Projects
  • Prospective Studies
  • Radiography, Bitewing
  • Survival Analysis
  • Treatment Outcome
  • Wound Healing/physiology
Citation (ISO format)
NEDIR, Rabah et al. Osteotome sinus floor elevation technique without grafting material: 3-year results of a prospective pilot study. In: Clinical oral implants research, 2009, vol. 20, n° 7, p. 701–707. doi: 10.1111/j.1600-0501.2008.01696.x
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Article (Published version)
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ISSN of the journal0905-7161
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