Spörri S, Belser U, Mühlemann H R
Helv Odontol Acta. 1975 Oct;19(2):65-8.
3 different enamel biopsy methods were tested on 2 maxillary permanent incisors on each of 90 schoolchildren. In methods A and B the round biopsy field was bordered by copalite varnish, while method C utilized a scotch tape border. The biopsy itself resulted from etching the enamel surface with 2N perchloric acid for 7 sec for method A, and 14 sec for methods B and C. Flouride was measured with the fluoride activity electrode. The doubled etching time caused only a 30 to 40% increase of enamel removal. Method C showed the best reproducibility.
对90名学童每人的2颗上颌恒切牙分别采用3种不同的釉质活检方法进行测试。方法A和B中，圆形活检区域用天然树脂清漆作边界，而方法C使用透明胶带作边界。活检是通过用2N高氯酸对釉质表面进行蚀刻来完成的，方法A蚀刻7秒，方法B和C蚀刻14秒。使用氟离子活性电极测量氟含量。蚀刻时间加倍仅使釉质去除量增加了30%至40%。方法C显示出最佳的可重复性。
