期刊
IMPLANT DENTISTRY
卷 26, 期 5, 页码 723-729出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/ID.0000000000000645
关键词
osteotomy; performance testing; dental implants; tribology
Introduction: This study evaluated cutting efficiency (CE) and linear wear of dental implant drills after 450 standardized osteotomies on bovine ribs. Diamond-like carbon-coated steel drills (SG), acid-treated steel drills (EG), and ceramic drills (ZG) were divided into 6 subgroups according to the number of uses. Materials and Methods: A robot-controlled program performed systematic instrumentation, timing, axial loading, and managed feed rate. CE was recorded in a polyurethane resin blank and end wear (VBBmax) was analyzed under stereo microscopy. Results: After osteotomies in beef ribs, CE for the phi 2.0-mm drill decreased 10.2% in SG and 10.9% in ZG; for the phi 3.0-mm drill, CE decreased 30.6% in SG, 8.5% in ZG, and improved in EG. The greatest wear occurred in O2.0-mm drills; ZG drills (phi 3.0 mm) exhibited only edge frittering, as confirmed on scanning electron microscopy. Conclusion: After 50 exposures to mechanical loads, steel and ceramic drills lost CE. Whereas cutting and thermal performance improved in experimental drills, the phi 2.0-mm drill exhibited the most signs of wear proportional to use. These findings suggest that, with the methodology employed, the life of these drills exceeds 50 osteotomies.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据