Darvell B W
Aust Dent J. 1981 Feb;26(1):25-30. doi: 10.1111/j.1834-7819.1981.tb03914.x.
The performance criterion of success time has been employed to determine the effects of oscillation frequency, amplitude, mercury content and the mass of the capsule charge on the relative efficiency of the trituration process. The effects of frequency and amplitude can be satisfactorily explained in terms of the impact energy of the mix on the capsule endwall; this includes the contribution of the resulting rise in temperature. However, attempts to measure the temperature of the capsule contents during operating revealed experimental difficulties which may lead to erroneous estimates if thermocouples or similar devices are used. The mass of the amalgam mix has a distinct effect on trituration efficiency, and is most apparent at lower mercury contents. The consequence of this is that "double spills" or larger mixes will require less time to reach the same state as their smaller counterparts. At minimal mercury contents there is the distinct danger of overtrituration as a result. Mercury content is relatively more important than mix mass, and suggests that variations in dispensers and preproportioned capsules may have considerable importance in the uniformity of the resulting mix. Amalgamators may be described by a "power number", having the same dimensions as mW/g, being the product (frequency in Hz)3/(amplitude in m)2, which is thus a guide to the maximum power capable of being expended on the trituration process assuming 100 percent efficiency. Success time provides a measure of that efficiency. The use of the success time in studies of "difficult" variables in the trituration process has been indicated, and these will form the basis of future work.
已采用成功时间这一性能标准来确定振荡频率、振幅、汞含量和胶囊装药质量对研磨过程相对效率的影响。频率和振幅的影响可以根据混合物对胶囊端壁的冲击能量得到令人满意的解释；这包括由此产生的温度升高的影响。然而，在操作过程中试图测量胶囊内容物的温度时发现存在实验困难，如果使用热电偶或类似装置，可能会导致错误的估计。汞齐混合物的质量对研磨效率有明显影响，在汞含量较低时最为明显。其结果是，“双倍溢出”或更大的混合物达到与较小混合物相同状态所需的时间更少。在汞含量最低时，会有过度研磨的明显危险。汞含量比混合物质量相对更重要，这表明分配器和预配量胶囊的变化可能对最终混合物的均匀性有相当大的影响。研磨机可以用一个“功率数”来描述，其尺寸与毫瓦/克相同，即（赫兹频率）³/（米振幅）²，因此在假设效率为100%的情况下，它是能够用于研磨过程的最大功率的一个指标。成功时间提供了该效率的一种度量。文中指出了在研磨过程中对“困难”变量的研究中使用成功时间，这些将构成未来工作的基础。
