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

Rosalina Tjandrawinata; Masao Irie; Yasuhiro Yoshida; Kazuomi Suzuki

doi:10.4012/dmj.23.146

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

Rosalina Tjandrawinata, Masao Irie, Yasuhiro Yoshida, Kazuomi Suzuki

Dental School

Research output: Contribution to journal › Article › peer-review

21 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 language	English
Pages (from-to)	146-154
Number of pages	9
Journal	Dental materials journal
Volume	23
Issue number	2
DOIs	https://doi.org/10.4012/dmj.23.146
Publication status	Published - Jun 2004

Keywords

Resin-modified glass-ionomer cement
Silanization
Spherical silica fillers

ASJC Scopus subject areas

Ceramics and Composites
Dentistry(all)

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