Simon U
Dtsch Zahnarztl Z. 1979 Oct;34(10):768-72.
Standard electric micromotors as well as accessory handpieces and right-angle handpieces were subjected to technical tests. Turbines with and without traction power (bearing power) were also studied. The rotational speed could be regulated on one turbine. Normal to high rotational speeds were obtained with electric micromotors when used in conjunction with the transferance attachment. The motors functioned well in terms of the linearity of rotational speed. The study of the rotational speed, regulation of rotational speed, and traction power of the turbines showed that the rotational speed and the possibility of so-called contact grinding of the turbine is equal to that of micromotors. In terms of grinding trauma to the pulp and gingiva, the indications shifted in favor of the turbine.
标准电动微型马达以及附属机头和直角机头均进行了技术测试。还研究了有和没有牵引动力（轴承动力）的涡轮机。其中一台涡轮机的转速可以调节。电动微型马达与转接附件配合使用时，可获得正常至高转速。马达在转速线性方面运行良好。对涡轮机的转速、转速调节和牵引动力的研究表明，涡轮机的转速和所谓的接触磨削可能性与微型马达相当。在对牙髓和牙龈的磨削创伤方面，适应症更倾向于涡轮机。
