Marginal Sealability of Resin-Modified Glass Ionomers for Base/liner: Effect of Hygroscopic Expansion and Bond Strength

Masao Irie, Hiroyuki Nakai

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The present study investigates the effect of storage in water on hygroscopic expansion and shear bond strength to dentin at periods up to 1 week, of the resin-modified glass ionomers for base/liner, and to analyze the effect on the marginal gaps in dentin cavities. For polishing after storage in water for 1 day, the material indicated significantly smaller marginal gaps both in dentin and in Teflon cavities than in those immediately after light-activation. For the results of after storage in water for 1 day, the material indicated significantly greater bond strength than material immediately after light-activation. The improvement of marginal sealability in dentin cavities may be performed not only by hygroscopic expansion during storage in water but also by greater bond strength after the setting reaction which continues to advance during storage in water.

Original languageEnglish
Pages (from-to)193-200
Number of pages8
JournalDental materials journal
Volume15
Issue number2
DOIs
Publication statusPublished - Dec 1996
Externally publishedYes

Keywords

  • Cavity liner
  • Glass polyalkenoate cement
  • Marginal gap

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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