Sumer Mahmut, Misir A Ferhat, Telcioglu N Tuba, Guler Ahmet U, Yenisey Murat
Department of Oral and Maxillofacial Surgery, Ondokuz Mayis University, Faculty of Dentistry, Samsun, Turkey.
J Oral Maxillofac Surg. 2011 May;69(5):1350-4. doi: 10.1016/j.joms.2010.11.001. Epub 2011 Feb 3.
The purpose of this study was to compare the heat generated from implant drilling using stainless steel and ceramic drills.
A total of 40 fresh bovine femoral cortical bone samples were used in this study. A constant drill load of 2.0 kg was applied throughout the drilling procedures via a drilling rig at a speed of 1,500 rpm. Two different implant drill types (stainless steel and ceramic) were evaluated. Heat was measured with type K thermocouple from 3 different depths. Data were subjected to the independent-sample t test and Pearson correlation analysis. The α level was set a priori at 0.05.
The mean maximum temperatures at the depths of 3 mm, 6 mm, and 9 mm with the stainless steel drill were 32.15°C, 35.94°C, and 37.05°C, respectively, and those with the ceramic drill were 34.49°C, 36.73°C, and 36.52°C, respectively. A statistically significant difference was found at the depth of 3 mm (P = .014) whereas there was no significant difference at the depths of 6 and 9 mm (P > .05) between stainless steel and ceramic drills.
Within the limitations of the study, although more heat was generated in the superficial part of the drilling cavity with the ceramic drill, heat modifications seemed not to be correlated with the drill type, whether stainless steel or ceramic, in the deep aspect of the cavity. Further clinical studies are required to determine the effect of drill type on heat generation.
本研究的目的是比较使用不锈钢钻头和陶瓷钻头进行种植体钻孔时产生的热量。
本研究共使用了40个新鲜的牛股骨皮质骨样本。在整个钻孔过程中，通过钻机以1500转/分钟的速度施加2.0千克的恒定钻孔负荷。评估了两种不同类型的种植体钻头（不锈钢和陶瓷）。使用K型热电偶从3个不同深度测量热量。数据进行独立样本t检验和Pearson相关性分析。α水平预先设定为0.05。
使用不锈钢钻头时，在3毫米、6毫米和9毫米深度处的平均最高温度分别为32.15°C、35.94°C和37.05°C，使用陶瓷钻头时分别为34.49°C、36.73°C和36.52°C。在3毫米深度处发现有统计学显著差异（P = 0.014），而在6毫米和9毫米深度处，不锈钢钻头和陶瓷钻头之间无显著差异（P > 0.05）。
在本研究的局限性范围内，尽管使用陶瓷钻头时在钻孔腔的表层产生了更多热量，但在腔的深部，热量变化似乎与钻头类型（无论是不锈钢还是陶瓷）无关。需要进一步的临床研究来确定钻头类型对热量产生的影响。
