期刊
MICROSCOPY RESEARCH AND TECHNIQUE
卷 84, 期 4, 页码 602-607出版社
WILEY
DOI: 10.1002/jemt.23618
关键词
adhesive interface; composites; dentin bonding; scanning electron microscopy
资金
- Ministry of Science of Serbia [174005]
The study observed the adhesive interface on original tooth samples and their epoxy replicas under SEM, finding that marginal adaptation was mostly of acceptable quality, but issues such as marginal gap formation and resin tag breakdown were also noted, mainly attributed to polymerization shrinkage. A profound understanding of ultrastructural morphology is important for achieving a more predictable and durable margin between composite restorations and surrounding tooth structures, and SEM analysis can serve this purpose.
The objective of this study was observation of the adhesive interface on original tooth samples, as well as their epoxy replicas, under SEM. A light-cure flowable composite was incrementally placed and light-polymerized in previously prepared cylindrical dentinal cavities on the buccal surfaces of extracted human third molars. After finishing procedures, impressions of the composite/dentin margin were made using polyvinylsiloxane in order to obtain accurate epoxy replicas for SEM analysis. Ultrastructural morphology of the adhesive surface was observed at high magnifications (>= 1,000x) on original tooth samples, which were previously prepared to expose the part of the dentin surface, which participates in the formation of adhesive bond. SEM micrographs showed that marginal adaptation was mostly of acceptable quality. In some of the SEM micrographs of original tooth samples, marginal gap formation, and resin tag breakdown were noted, which were ascribed to polymerization shrinkage. Profound understanding of ultrastructural morphology is necessary for achieving more predictable and durable margin between composite restorations and surrounding tooth structures, and SEM analysis can serve that purpose.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据