الفهرس 
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Abstract
The current study was conducted to evaluate flexuralstrength, micro-tensile bond strength and fluoride release of a newlyintroduced glass-ionomer restorative cement (GIC) based on glass hybridtechnology, comparing it with a conventional one. Materials and Methods : Two types of glass ionomer restorativecements were used in this study; glass hybrid-based (EQUIA Forte Fil)and a conventional one (Fuji IX GP). For each test, ten specimens wereprepared for regarding the type of studied cements. Flexural strength(FS) was determined by a Universal Testing Machine using three-point bending test. Microtensile bond strength (μTBS) was measured using theUniversal Testing Machine. After debonding, the mode of failure wasdetermined by examining the fractured surfaces by a stereomicroscopeand a scanning electron microscope. Fluoride release was evaluated after different incubation times (24 h, 3 days, 5 days and 1 week) in distilledwater, using an ion specific electrode connected to an ion analyzer. Data were statistically analyzed and compared using unpaired student t test(α = 0.05). Results : Results of flexural strength showed that EQUIA Forte Fil exhibited non-significantly higher values compared with Fuji IX (P > 0.05). On the other hand, μTBS results revealed that EQUIA Forte Filexhibited significantly higher μTBS value (P < 0.05) than Fuji IX. statistically significant difference (P > 0.05) between the two GICs, while a significant difference (P < 0.05) was noted on the other incubation periods (3 days, 5 days and 1 week). Conclusions: EQUIA Forte Fil showed better mechanical properties,good bond strength with sound dentin and higher fluoride releasecompared with the conventional GIC, which could be a promising step in the development of GIC.