Marginal gap formation and fluoride release of resin-modified glass-ionomer cement: Effect of silanized spherical silica filler addition

Rosalina Tjandrawinata, Masao Irie, Kazuomi Suzuki

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The purpose of this study was to investigate the effects of silanized spherical silica fillers (SF) on the immediate and 24-hour marginal gaps of resin-modified glass-ionomer cement (RMGIC) in tooth cavities. In correlation with marginal gap formation in the tooth cavity, these influencing factors were also examined: marginal gap and setting shrinkage of cement in the Teflon mold, as well as the shear bond strength to tooth substrate. Moreover in correlation with caries prevention, fluoride release was examined too. In this investigation, the fillers were mixed into the RMGIC powder (Fuji II LC EM). Untreated spherical silica filler (UF)-added RMGIC was used as a comparison. When compared with the control (i.e., original RMGIC), the addition of SF significantly decreased immediate marginal gap in tooth cavities and setting shrinkage in Teflon mold up to 63% and 66% respectively. Fluoride release was significantly reduced too. Apart from these results, this study showed that addition of 5 wt% SF increased the shear bond strength to human enamel and dentin.

Original languageEnglish
Pages (from-to)305-313
Number of pages9
JournalDental materials journal
Volume23
Issue number3
DOIs
Publication statusPublished - Sep 2004
Externally publishedYes

Keywords

  • Marginal gap
  • Resin-modified glass-ionomer cement
  • Silanized spherical silica fillers

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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