Healing at sites prepared using different drilling protocols. An experimental study in the tibiae of sheep

PloS One
Vittorio FaveroDaniele Botticelli

Abstract

The aim of the experiment was to study the healing at implants installed in site prepared in bone type 1 using different rotation speeds and cooling strategies. The tibiae of twelve sheep were used as experimental sites. Two implant sites were prepared in each tibia using drills either at a high or a mixed speed under irrigation. At the mixed-speed sites, 60 rpm without irrigation were applied for the last drill, the countersink and during implant installation. Biopsies representing the healing after 1, 2, and 6 weeks were obtained and ground sections were prepared. At the histological analyses, after 1 week of healing, no new bone was found at both high- and mixed-speed sites. After 2 weeks of healing, small amounts of newly formed bone were observed in the cortical layer, reaching percentages of 3.6±3.0% at the mixed-speed sites, and of 2.2±1.5% at the high-speed sites. An irrelevant quantity of new bone was seen in the marrow compartments of a few specimens. After 6 weeks of healing, new bone was found in higher quantity, reaching in the cortical compartment 66.9±6.8% and 67.3±17.7% at the mixed- and high-speed sites, respectively. The respective percentages in the marrow compartment were 23.2±13.0% and 30.6±29.2%. No statis...Continue Reading

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Citations

May 21, 2020·International Journal of Environmental Research and Public Health·Sergio Alexandre GehrkeGiovanna Iezzi
Apr 25, 2021·Clinical Oral Investigations·Juan Carlos Bernabeu-MiraDavid Peñarrocha-Oltra
Nov 27, 2021·Oral and Maxillofacial Surgery·Shigeo FujiwaraFranco Bengazi
Feb 2, 2022·Periodontology 2000·Georgios A Kotsakis, Georgios E Romanos

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Methods Mentioned

BETA
biopsies

Software Mentioned

Elements D
NIS
SPSS Statistics

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