Pieper K, Meyer G, Marienhagen B, Motsch A
Zentrums Zahn-, Mund und Kieferheilkunde der Universität Göttingen.
Dtsch Zahnarztl Z. 1991 Mar;46(3):222-5.
549 amalgam and 257 composite fillings, which were made by students, were reexamined. The functional loss of restorations was recorded and present fillings were assessed regarding marginal integrity, anatomy, surface condition and colour as referred to composite fillings. After 2-4 years of wear 90.3% of the amalgam fillings were still present, the percentage for 5-8 years-old amalgams was 88.5% and for 9-11 years-old amalgams 85.3%. Composite fillings were substituted or lost at a rate of 7.1% after 2-4 years, 10.8% after 5-8 years and 10.5% after 9-11 years.
对学生制作的549颗银汞合金充填物和257颗复合树脂充填物进行了重新检查。记录修复体的功能丧失情况，并根据复合树脂充填物评估现有的充填物的边缘完整性、外形、表面状况和颜色。经过2至4年的磨损后，90.3%的银汞合金充填物仍然存在，5至8年的银汞合金充填物这一比例为88.5%，9至11年的银汞合金充填物为85.3%。复合树脂充填物在2至4年后的替换或丢失率为7.1%，5至8年后为10.8%，9至11年后为10.5%。
