银汞合金充填的远期临床分析

A Clinical feature of the long term restoratin in dental filling with amalgan

本文就198颗银汞合金充填物保持完好在20年以上的牙齿进行了临床观察。结果表明:充填时间最长者55年,20年以上者99颗,30年以上者57颗,40年以上者40颗,50年以上者2颗、平均29年。充填牙位:磨牙150颗,双尖牙32颗,尖牙2颗,切牙14颗(P<0. 005)。充填洞型: Ⅰ类洞 110颗, Ⅱ类洞 36颗. Ⅴ类洞 22颗(P<0.05)。治疗方法:根管治疗96颗,干髓治疗44颗,活髓治疗58颗(P>0.05)。临床及X线片观察这些银汞充填牙无任何异常。作者认为制备完美的洞型、选择良好的材料,精细密合的充填,是牙体充填术的必备条件和充填物长期保持的重要因素,迄今为止,银汞合金仍是牙体充填材料中独竖一帜的佼佼者。

The clinical character is surveyed in 198 teeth with amalgem filling which are kept for 20 years above in this article. The result demonstrates that the longest time of dental filling lasts 55 years. In 198 teeth, 99 are filled more than 20 years. 57 ones over 30 years. 40 surpass 40 years and two cases outstrips 50 years and average time is 29 years. In the location of dental filling, 150 teethare for molars 32 cases for bicuspids, two for canines and 14 for incsors(P<0. 005) In the cavity form of G. V. Black, 140 teeth are for classification 1,36 for I and 22 for V (P<0.05)In the therapeutic; 96 teeth are for root canal treatment. 44 for pulp mummification and 58 for pulp vitality cure(P>0. Oo). Clinically and radiological-ly. the dentes,periodongium and periapex of 198 amalgam filling teeth are no any abnormal. We believe that it is essential for keeping denial filling loger to make a perfect cavity preparation,to select a good material and to fill consummately. Up to now, amalgam is still splendid filling material in dental treatment.