Abstract
This study was aimed at evaluating the effect of E-glass fibers ([Formula: see text]1.0[Formula: see text]mm long, [Formula: see text][Formula: see text]mm with 1.0[Formula: see text]wt.% and 5.0[Formula: see text]wt.%) in two (MegacemTMand GlassFillTM) glass-ionomer cements (GIC) to enhance their mechanical properties. The six specimen groups were assigned to MCC, MC1, MC5, GFC, GF1 and GF5, and evaluated after 24[Formula: see text]h dry storage and 30 days water storage. The results showed considerable increase in surface roughness and the flexural strength values of both cements in both time intervals, whereas a statistically higher elastic modulus was observed in MC1 24[Formula: see text]h (15.3[Formula: see text]GPa) and 30 days groups (7.1[Formula: see text]GPa). On the contrary, no steady improvement in nano-hardness and yield strength were observed with the addition of chopped glass fibers. The SEM images suggest inadequate adhesion of the fibers to GIC matrix. Reinforcing GICs with short chopped E-glass fibers may not improve all the mechanical properties of GIC.
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