Andrews J T, Hembree J H
ASDC J Dent Child. 1975 Sep-Oct;42(5):367-70.
Restorations placed without coating the cavity walls with cavity varnish exhibited significant marginal leakage at all time intervals; however, there appears to be some reduction of leakage after six months. Restorations placed after coating the cavity walls with cavity varnish demonstrated no leakage at forty-eight hours and three months. Velvalloy and Dispersalloy restorations exhibited no leakage at six months, although there was a slight leakage at one year. Spheraloy restorations with cavity varnish demonstrated some leakage at six months and one year. The results of this study appear to correlate with previous studies using the same technique to determine marginal leakage. Apparently, the corrosion resistance of the dispersed phase alloy does not increase the marginal leakage, when compared with the conventional and spherical alloys.
未用洞漆涂布洞壁所进行的修复体在所有时间间隔均表现出明显的边缘渗漏；然而，六个月后渗漏似乎有所减少。用洞漆涂布洞壁后进行的修复体在48小时和三个月时未显示渗漏。Velvalloy和Dispersalloy修复体在六个月时未显示渗漏，尽管在一年时有轻微渗漏。用洞漆的Spheraloy修复体在六个月和一年时显示出一些渗漏。本研究结果似乎与以往使用相同技术确定边缘渗漏的研究相关。显然，与传统合金和球形合金相比，分散相合金的耐腐蚀性并未增加边缘渗漏。
