Hefferren J J, Kingman A, Stookey G K, Lehnhoff R, Muller T
J Dent Res. 1984 Sep;63(9):1176-9. doi: 10.1177/00220345840630091701.
An International Collaborative Study was conducted in which one surface profile and two radiotracer methods for assessing abrasivity of dentifrices on human dentin were compared. The study consisted of two phases: an open phase in which participating laboratories used the method they routinely practiced; and a controlled phase in which an expert team for each method performed the abrasion tests using all three methods. Four test pastes of known abrasivity were evaluated by each method. Similar abrasivity values for the test pastes were obtained with the radiotracer methods, whereas the surface profile method produced significantly different values. The precision levels of the radiotracer methods were similar, and both were superior to those obtained by the surface profile method. The time needed to perform the tests by the ADA radiotracer method was significantly less than that needed by the other methods. These findings suggest that the ADA radiotracer method will be useful in assessing abrasivity of dentifrices.
开展了一项国际合作研究，比较了一种表面轮廓法和两种放射性示踪剂法评估牙膏对人牙本质磨损性的情况。该研究包括两个阶段：一个开放阶段，参与实验室使用他们常规的方法；以及一个对照阶段，每种方法的专家团队使用所有三种方法进行磨损测试。每种方法对四种已知磨损性的测试牙膏进行了评估。放射性示踪剂法得到了相似的测试牙膏磨损性值，而表面轮廓法得出的数值显著不同。放射性示踪剂法的精密度水平相似，且均优于表面轮廓法。美国牙科协会（ADA）放射性示踪剂法进行测试所需的时间明显少于其他方法。这些发现表明，ADA放射性示踪剂法在评估牙膏磨损性方面将是有用的。
