Department of Restorative Dentistry, University of Western Ontario, Ontario, Canada.
Int J Prosthodont. 2011 Jan-Feb;24(1):38-9.
The purpose of this study was to determine the accuracy of mechanical torque devices in delivering target torque values in dental offices in Salvador, Brazil. A team of researchers visited 16 dental offices, and the clinicians applied torque values (20 and 32 Ncm) to electronic torque controllers. Five repetitions were completed at each torque value and data were collected. When 20 Ncm of torque was used, 62.5% of measured values were accurate (within 10% of the target value). For 32 Ncm, however, only 37.5% of these values were achieved. Several of the tested mechanical torque devices were inaccurate.
本研究旨在确定牙科学室中机械扭矩设备在传递目标扭矩值方面的准确性。研究小组访问了 16 家牙科学室，临床医生将扭矩值（20 和 32 Ncm）应用于电子扭矩控制器。在每个扭矩值下完成了 5 次重复测量，并收集了数据。当使用 20 Ncm 的扭矩时，62.5%的测量值是准确的（在目标值的 10%以内）。然而，在 32 Ncm 的情况下，只有 37.5%的测量值达到了这一标准。一些经过测试的机械扭矩设备不准确。
