Objectives. To test the hypothesis that there would be no differences in osseointegration by reducing the number of drills for site\r\npreparation relative to conventional drilling sequence. Methods. Seventy-two implants were bilaterally placed in the tibia of 18\r\nbeagle dogs and remained for 1, 3, and 5 weeks. Thirty-six implants were 3.75mm in diameter and the other 36 were 4.2 mm. Half\r\nof the implants of each diameter were placed under a simplified technique (pilot drill + final diameter drill) and the other half were\r\nplaced under conventional drilling wheremultiple drills of increasing diameter were utilized. After euthanisation, the bone-implant\r\nsamples were processed and referred to histological analysis. Bone-to-implant contact (BIC) and bone-area-fraction occupancy\r\n(BAFO) were assessed. Statistical analyses were performed by GLM ANOVA at 95% level of significance considering implant\r\ndiameter, time in vivo, and drilling procedure as independent variables and BIC and BAFO as the dependent variables. Results.\r\nBoth techniques led to implant integration. No differences in BIC and BAFO were observed between drilling procedures as time\r\nelapsed in vivo. Conclusions.The simplified drilling protocol presented comparable osseointegration outcomes to the conventional\r\nprotocol, which proved the initial hypothesis.
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