Influence of different drilling preparation on cortical bone: A biomechanical, histological, and micro-CT study on sheep

Clinical Oral Implants Research
Michele StoccheroRyo Jimbo

Abstract

The aim of this study was to investigate the extent of cortical bone remodeling between two different drilling protocols by means of histomorphometric, µ-CT, and biomechanical analyses. A total of 48 implants were inserted into the mandible of six sheep following two drilling protocols: Group A (Test, n = 24), undersized preparation; Group B (Control, n = 24), non-undersized preparation. The animals were euthanatized to obtain 5 and 10 weeks of implantation time. Removal torque (RTQ) was measured on 12 implants of each group and the peri-implant bone was µ-CT scanned. Bone volume density (BV/TV) was calculated in pre-determined cylindrical volumes, up to 1.5 mm from implant surface. Non-decalcified histology was prepared on the remaining 12 implants from each group, where total bone-to-implant contact (totBIC) and newly-formed BIC (newBIC) was measured. Bone Area Fraction Occupancy (BAFO) was determined in pre-determined areas up to 1.5 mm from implant surface. Paired sample t test or Wilcoxon signed-rank test was used to investigate differences between the groups. Group A presented significantly increased RTQ value at 5 weeks, while no difference was observed at 10 weeks. Group B presented increased BV/TV value at 5 weeks. Bot...Continue Reading

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Citations

Aug 18, 2020·BioMed Research International·Maria MeniniFrancesco Pera
Jun 7, 2019·Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology·Pengcheng JiaCurtis Sk Chen
Aug 6, 2021·Clinical Oral Implants Research·Ingemar AbrahamssonTord Berglundh
Nov 27, 2021·Oral and Maxillofacial Surgery·Shigeo FujiwaraFranco Bengazi

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