Dyson J E, Darvell B W
Department of Prosthetic Dentistry, University of Hong Kong.
Aust Dent J. 1995 Oct;40(5):330-8. doi: 10.1111/j.1834-7819.1995.tb04823.x.
Air turbine handpieces are expected to continue to be widely used as the main means of carrying out dental cutting work and scope exists for further design improvements. An understanding of the theoretical principles governing the performance of these devices seems essential for the systematic development of better handpiece designs and methods of specification. Furthermore, for experimental work on cutting behaviour with air turbine equipment, this knowledge is required for appropriate characterization of the performance of the particular handpiece used with respect to actual rates of energy disposition. The literature relating to air turbine handpiece performance is critically reviewed to assess currently available methods of measuring important variables such as speed, torque, and power. In this, consideration is given to the current state of knowledge of the influence on these variables of air pressure, flow and turbine design features. It is apparent that, although various measurement methods have been described and data for individual handpieces published, no attempt has yet been made to explore the functional relationships that exist between the variables. It is concluded that there is a need to identify the factors influencing turbine performance, to develop measurement systems which would provide adequate accuracy and precision and then to investigate the functional relationships between these relevant variables.
空气涡轮手机有望继续作为开展牙科切割工作的主要手段而被广泛使用，并且在进一步的设计改进方面仍有空间。了解支配这些设备性能的理论原理，对于系统地开发更好的手机设计和规范方法似乎至关重要。此外，对于使用空气涡轮设备进行切割行为的实验工作，需要这些知识来适当地表征所使用的特定手机相对于实际能量分布速率的性能。对与空气涡轮手机性能相关的文献进行了批判性综述，以评估当前测量速度、扭矩和功率等重要变量的可用方法。在此过程中，考虑了关于气压、流量和涡轮设计特征对这些变量影响的当前知识状态。显然，尽管已经描述了各种测量方法并公布了单个手机的数据，但尚未尝试探索变量之间存在的功能关系。结论是，有必要确定影响涡轮性能的因素，开发能够提供足够精度和准确性的测量系统，然后研究这些相关变量之间的功能关系。
