Iyer S, Weiss C, Mehta A
United States Institute of Implant Dentistry, New York, New York 10174, USA.
Int J Prosthodont. 1997 Sep-Oct;10(5):411-4.
The amount of heat produced by dental implant osteotomy (receptor site) preparation at different speeds and the effects of heat production on the prognosis of implant treatment are controversial. In Part I of this two-part study, heat production was measured in vivo during osteotomy preparation at low (maximum 2,000 rpm), intermediate (maximum 30,000 rpm), and high (maximum 400,000 rpm) speeds in the rabbit tibia, and an inverse relationship was observed between drill speed and heat production. For the measurement of heat production (Part I), a thermocouple probe was inserted into a prepared receptor site in the anteromedial aspect of the tibial metaphysis. Temperature was recorded while an osteotomy was drilled 1 mm from the thermocouple receptor site. Distilled water was used as coolant in conjunction with all drilling, and all osteotomies were prepared by a single researcher to eliminate the variable of interoperator difference in technique. An inverse relationship was observed between drill speed and heat production. An analysis of variance indicated significant differences in heat production among the three drilling speeds (P < 0.05). The results of Part 1 of this study indicate that for the configuration and material of bur used, the high-speed range minimizes heat production.
不同速度下种植体截骨术（种植窝制备）产生的热量以及产热对种植治疗预后的影响存在争议。在这项分为两部分的研究的第一部分中，在兔胫骨中以低（最大2000转/分钟）、中（最大30000转/分钟）和高（最大400000转/分钟）速度进行截骨术制备时，在体内测量了产热情况，并且观察到钻头速度与产热之间呈反比关系。为了测量产热（第一部分），将一个热电偶探头插入胫骨近端前内侧已制备好的种植窝内。在距离热电偶接收部位1毫米处钻孔时记录温度。所有钻孔操作均使用蒸馏水作为冷却剂，并且所有截骨术均由一名研究人员完成，以消除操作者技术差异这一变量。观察到钻头速度与产热之间呈反比关系。方差分析表明三种钻孔速度下的产热存在显著差异（P < 0.05）。本研究第一部分的结果表明，对于所使用的车针的形状和材料，高速范围可将产热降至最低。
