Sutow E J, Maillet W A, Taylor J C, Hanrahan K L, Hall G C, Harandi K
Department of Applied Oral Sciences, Faculty of Dentistry, Halifax, Nova Scotia, Canada.
J Oral Rehabil. 2000 Nov;27(11):927-34. doi: 10.1046/j.1365-2842.2000.00591.x.
Many variables are believed to affect the accurate measuring of metallic restoration electrical potentials. This study examined the effects of intra- versus extra-oral location of the reference electrode, the type of metallic probe used to make contact with the restoration, and scratching and brushing of the restoration surface. Dental amalgam restorations were measured in 40 human subjects. Results showed that only the location of the reference electrode affected the central tendency of the potential. The study discusses the significance of some experimental variables in the accurate measuring of metallic potentials and the need to consider individual subject differences when statistically analysing for the central tendency of a sample.
许多变量被认为会影响金属修复体电位的准确测量。本研究考察了参比电极在口内与口外位置的影响、用于与修复体接触的金属探针类型的影响以及修复体表面的刮擦和刷洗的影响。对40名人类受试者的牙科汞合金修复体进行了测量。结果表明，只有参比电极的位置会影响电位的集中趋势。该研究讨论了一些实验变量在金属电位准确测量中的意义，以及在对样本的集中趋势进行统计分析时考虑个体差异的必要性。
