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    Microleakage of Inlay Ceramic Systems Luted with Self-adhesive Resin Cements
    (Quintessence Publishing Co Inc, 2014) Uludag, Bulent; Yucedag, Elif; Sahin, Volkan
    Purpose: To evaluate the microleakage of Cerec 3, IPS e. max Press, and Turkom-Cera inlays cemented with three self-adhesive resin cements. Materials and Methods: Ninety standardized class III MOD cavities were prepared in intact human mandibular third molars. Ceramic inlays were fabricated according to the manufacturer's instructions and were cemented using three self-adhesive resin cements (RelyX Unicem, Smartcem 2, and SpeedCEM). The specimens were stored in distilled water at 37 degrees C for 24 h and subjected to 1000 thermocycles in water between 5 degrees C and 55 degrees C with a dwell time of 30 s. Subsequently, the specimens were subjected to 100,000 cycles of mechanical loading of 50 N at 1.6 Hz in 37 degrees C water. The specimens were immersed in 0.5% basic fuchsine for 24 h and were sectioned using a low-speed diamond blade. The percentage of dye leakage at the tooth/restoration interface was measured and compared by Kruskal-Wallis tests with Bonferonni correction and Mann-Whitney U-tests at a significance level of p < 0.05. Results: Microleakage at the RelyX Unicem interface was lower than that with Smartcem 2 and SpeedCEM resin cements (p < 0.05). Microleakage of the Turkom-Cera system was higher than Cerec 3 and IPS e. max Press ceramic inlays (p < 0.05). Conclusions: Regardless of the ceramic system and self-adhesive resin cement used, dentin margins were associated with higher microleakage than enamel margins.