Simonsen R J
ASDC J Dent Child. 1979 Sep-Oct;46(5):382-4.
There is no significant difference in sealant retention on primary molars etched for sixty seconds or for 120 seconds, twelve months after application. No caries was found on any sealed surface. Decreasing the etch-time for primary molars has been found to decrease the chance of contamination, during etching. Additionally, the shorter etch-time was far more acceptable to three and four-year-old children. This study is part of a continuing investigation of the retention, caries-reduction and overall cost-effectiveness of sealing permanent and primary teeth in children.
在应用后十二个月，对乳磨牙蚀刻60秒或120秒后的封闭剂保留率没有显著差异。在任何封闭表面均未发现龋齿。已发现减少乳磨牙的蚀刻时间可降低蚀刻过程中的污染几率。此外，较短的蚀刻时间对三、四岁的儿童来说更容易接受。本研究是对儿童恒牙和乳牙封闭的保留率、防龋效果及总体成本效益持续调查的一部分。
