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Quintessence Publishing: Journals: EJOI

 

European Journal of Oral Implantology

Editor in Chief: Dr. Marco Esposito

Official publication of the British Society of Oral Implantology (BSOI) and the Dutch Society of Oral Implantology (NVOI)

ISSN (print) 1756-2406 • ISSN (online) 1756-2414

Publication:

Fall 2011
Volume 4 , Issue 3

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One versus two titanium screw fixation of autologous onlay bone grafts in the anterior maxilla: a randomised histological pilot study

Burger, Evita A.C. / Meshkini, Hamid / Lindeboom, Jerome A.H.

Purpose: The aim of this study was to compare the histological presentation of local mandibular bone grafts fixed with one screw or two screws in buccal anterior maxillary augmentation procedures. Study design: Local buccal defects of the anterior maxilla were reconstructed in 12 patients (mean age 47 17 years, range 18 to 67 years) using autogenous cortical bone grafts from the mandibular retromolar area. Patients were randomised using envelopes containing study identification numbers. After randomisation, two screws were used to fix the bone graft in six patients, and one screw was used in the other six patients. Four months later during implant placement, a bone biopsy was taken with a trephine. The biopsies were processed for light microscope evaluation. Results: The mean total bone volume varied from 35.8% to 72.4% (mean 51.1% 13.4%) in the one-screw group and from 28.7% to 56.6% (mean 40.8% 11.5%) in the two-screw group. The mean non-vital bone volume ranged from 0% to 2% (mean 0.9% 0.9%) in the one-screw group and from 0% to 8.9% (mean 2.2% 3.7%) in the two-screw group. The mean osteoid volume ranged from 2.2% to 7.3% (mean 5.4% 1.7%) in the one-screw group and from 2.0% to 16.4% (mean 7.3% 5%) in the two-screw group. Conclusion: No significant histological differences were found between the use of one or two screws to fix an autologous bone graft in buccal bone grafting procedures prior to implant placement.

Keywords: bone reconstruction, onlay bone grafts, ramus grafts, screw fixation

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