Assistant Professor, Department of Dentistry, UNIFOR-University of Fortaleza, Fortaleza, Ceará, Brazil.
Private Practice, Goiânia, Goiás, Brazil.
Implant Dent. 2017 Dec;26(6):882-887. doi: 10.1097/ID.0000000000000654.
The aim of this study was to evaluate the influence of the drilling speed on bone healing and the osseointegration of implants placed with a guided flapless surgical technique in rabbit tibias.
For the evaluation of bone healing, a total of 30 perforations (defects) were made in both tibias of 15 rabbits using 2 different drilling speeds (1500 rpm-control group; 50 rpm-test group). The regeneration of bone tissue in the surgical sites was evaluated at 0, 7, and 14 days. For the evaluation of implant osseointegration, another 15 rabbits underwent drilling in both tibias for implant placement. Thirty implants (3.75 × 10 mm) were placed to evaluate osseointegration at 4, 8, and 12 weeks after surgery.
Both groups showed a progressive healing of the defect, which involved the complete closure of the perforation. The osseointegration occurred in all groups with no statistically significant differences in the assessment of the osseointegration between the groups.
In the experimental models used, the drilling speed does not prejudice the pattern of bone healing and osseointegration of implants placed with guided flapless surgery.
本研究旨在评估在兔胫骨中使用无瓣引导式外科手术技术种植时，钻头速度对骨愈合和种植体骨整合的影响。
为了评估骨愈合情况，在 15 只兔子的双侧胫骨中使用两种不同的钻速（1500 rpm-对照组；50 rpm-实验组）共制造了 30 个穿孔（缺损）。在第 0、7 和 14 天评估手术部位的骨组织再生情况。为了评估种植体骨整合情况，另 15 只兔子在双侧胫骨中进行了钻孔以植入种植体。共放置了 30 个种植体（3.75×10mm），以评估术后 4、8 和 12 周时的骨整合情况。
两组均显示缺损逐渐愈合，穿孔完全闭合。所有组均发生骨整合，组间骨整合评估无统计学差异。
在使用的实验模型中，钻头速度不会影响无瓣引导式外科手术种植体的骨愈合和骨整合模式。
