Letzel H, Vrijhoef M M
J Oral Rehabil. 1984 Mar;11(2):89-94. doi: 10.1111/j.1365-2842.1984.tb00557.x.
The influence of the polishing procedure on the marginal integrity of amalgam restorations was investigated in a clinical study. In this study two operators each made 150 class I or II restorations in a group of forty-eight adult patients. The restorations were made in a series of six per patient. Within each series, two restorations were made of three different high copper amalgam alloys. Only one restoration of each pair was polished. From each restoration a black and white photograph was taken after finishing and after 0.5, 1.0 and 1.5 years. The marginal integrity of each restoration at the four time periods was quantified with a 6-point photo rating scale. The quantifications were analysed as to their variance for the factors alloy, polishing procedure, operator and patient. After finishing, all four factors had a significant influence on the marginal integrity. From 0.5 to 1.5 years, the influence of the factors alloy, polishing procedure and patient were very significant. The influence of the patient on marginal integrity was more or less equal to that of the alloy. The size of the polish influence was relatively small. Therefore, it was concluded that the contribution of the polishing procedure to the prevention of marginal deterioration was questionable.
在一项临床研究中，调查了抛光程序对汞合金修复体边缘完整性的影响。在该研究中，两名操作人员在一组48名成年患者中各制作了150个I类或II类修复体。修复体按每位患者6个的系列制作。在每个系列中，两种修复体由三种不同的高铜汞合金制成。每对修复体中只有一个进行抛光。在完成修复体制作后以及0.5、1.0和1.5年后，从每个修复体拍摄黑白照片。使用6分照片评级量表对每个修复体在四个时间段的边缘完整性进行量化。对量化结果就合金、抛光程序、操作人员和患者等因素的方差进行分析。完成后，所有四个因素对边缘完整性均有显著影响。从0.5年到1.5年，合金、抛光程序和患者因素的影响非常显著。患者对边缘完整性的影响或多或少与合金相当。抛光影响的大小相对较小。因此，得出的结论是，抛光程序对预防边缘恶化的作用值得怀疑。
