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 |
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Pages (from-to) | 146-154 |
Number of pages | 9 |
Journal | Dental materials journal |
Volume | 23 |
Issue number | 2 |
DOIs | |
Publication status | Published - Jun 2004 |
Keywords
- Resin-modified glass-ionomer cement
- Silanization
- Spherical silica fillers
ASJC Scopus subject areas
- Ceramics and Composites
- Dentistry(all)