コンポジットレジン修復時に生ずる窩縁部エナメル質微小亀裂に及ぼす臨床的因子に関する研究

DOI NDLデジタルコレクション Web Site PubMed 被引用文献12件

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タイトル別名
  • The Effects of Various Clinical Factors on Marginal Enamel Micro-Cracks Produced around Composite Restoration

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In this study, enamel micro-cracks produced around composite restorations were observed on surfaces and vertical sections, using a stereomicroscope and a scanning electron microscope (SEM). The effects of various clinical factors, i.e. the curing system, the marginal form and the polishing period after filling, on the incidence of marginal enamel micro-cracks were examined. Enamel micro-cracks were observed on all of the class 1 and 5 composite restorations when the cavity had no marginal bevel and the restorations were polished immediately after filling. Enamel micro-cracks distributed approximately parallel to the cavity margin and located 0.01-0.3mm from the restored cavity margin. The occurrence of enamel micro-cracks was higher in light-cured composite resin restorations than in chemical-cured ones, for non-beveled cavities when polished 10min or 24 hours after filling. The occurrence of micro-cracks was reduced by marginal beveling and delayed polishing.

収録刊行物

  • Dental Materials Journal

    Dental Materials Journal 11 (1), 26-37,112, 1992

    一般社団法人　日本歯科理工学会

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