Hosoya Y, Goto G
J Pedod. 1990 Winter;14(2):84-92.
The purpose of this study was to investigate the influence of cleaning and polishing pretreatments and etching times on unground primary enamel smooth surfaces with respect to the quality of etching patterns. Labial surfaces of 117 extracted or exfoliated caries free primary anterior teeth were used. Various cleaning and polishing methods were used before etching. Etching times with 40% phosphoric acid gel were 10, 30 and 60 seconds and all specimens were washed with an air water spray for 30 seconds. The following observations were obtained using the SEM. 1. There was not a significant difference between the appearance of prism structures by etching and the pretreatment methods in the 60 and 30 seconds etching. 2. The shorter the etching time, the higher was the rate of the cases which did not show any prism structure after etching.
本研究的目的是探讨清洁和抛光预处理以及蚀刻时间对未打磨的乳牙釉质光滑表面蚀刻图案质量的影响。使用了117颗拔除或自然脱落的无龋乳牙的唇面。蚀刻前采用了各种清洁和抛光方法。用40%磷酸凝胶蚀刻的时间分别为10秒、30秒和60秒，所有标本均用空气-水喷雾冲洗30秒。使用扫描电子显微镜获得了以下观察结果。1. 在蚀刻60秒和30秒时，蚀刻后的棱柱结构外观与预处理方法之间没有显著差异。2. 蚀刻时间越短，蚀刻后未显示任何棱柱结构的情况发生率越高。
