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    Evaluation of BIS-GMA Release in Different Types of Composites
    (Erzincan Binali Yıldırım Üniversitesi, Fen Bilimleri Enstitüsü, 2021) Karaca, Serhat; Özdokur, Kemal Volkan; Egil, Edibe; Ceyran, Ertuğrul; Duman, Canan
    BIS-GMA is frequently is involved in the structure of composite materials and may remain unpolymerized after polymerization. Residual Bis-GMA has harmful effects, it is crucial to determine the amounts released monomer from dental materials. The aim of this study is to compare residual BIS-GMA amounts in three types of composite. A total of 45 (n=15) composite (Filtek Ultimate Universal Restorative,3M ESPE,Germany), flowable composite (Nextcomp Flow,Meta Biomed,Kore), bulk fill composite(Tetric N Ceram, Ivoclar,Lichtenstein) cylindrical samples were polymerized in Teflon molds in accordance with the manufacturer's instructions. The samples were placed in 1.5ml ethanol (Carlo Erba, Pharm. Grade, 99.9%) and kept at 37oC. Monomer release of the samples was evaluated on the first, third and seventh days using the High Performance Liquid Chromatography technique. BIS-GMA release was shown with the highest amounts within all groups on the first day. The elution in composite fillings was significantly lower than the other materials on the first day(p<0.05). The highest total emission rates were observed in the flowable composite. The material selected in clinical practice should be considered because the monomer release may vary depending on the composite type.