Effect of adding spherical silica filler on physico-mechanical properties of resin modified glass-ionomer cement

Rosalina Tjandrawinata, Masao Irie, Yasuhiro Yoshida, Kazuomi Suzuki

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

This study investigated the effects of spherical silica fillers on the physical and mechanical properties of resin-modified glass-ionomer cement (RMGIC). Specimens were fabricated by mixing untreated (UF) or silanized (SF) spherical silica filler into the powder of a commercially prepared RMGIC. The original RMGIC and a preparation containing 20 wt% spherical silica filler were also examined with regard to their fractured surface and fluoride release. The fillers increased the compressive strength remarkably: up to 17% in the case of SF and 9% in the case of UF. Both UF and SF increased the flexural strength by up to 17%. The addition of SF increased the DTS up to 38%, but UF decreased the DTS. The addition of SF improved the workability and the mechanical properties of the RMGIC.

Original languageEnglish
Pages (from-to)146-154
Number of pages9
JournalDental materials journal
Volume23
Issue number2
DOIs
Publication statusPublished - Jun 2004
Externally publishedYes

Keywords

  • Resin-modified glass-ionomer cement
  • Silanization
  • Spherical silica fillers

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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