Bonding Properties of Resin Cements to Various Adherends

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  • 接着性レジンセメントの各種被着面に対する接着性に関する研究

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MMA-based resin cements, composite resin cements and self-adhesive resin cements are widely used in clinical dentistry. This study evaluated the bonding properties of resin cements by measuring the tensile bond strength (TBS) to various adherends, such as enamel, dentin, Au-Ag-Pd alloy and ceramic. Super Bond C & B® (SB, Sun Medical) and Multi bond II (MB, Tokuyama Dental) were used as MMA-based resin cements. ResiCem (RC, Shofu) and Panavia® F2.0 (PF, Kuraray Medical) were employed as composite resin cements. RelyX™ Unicem Cliker™ (UC, 3M ESPE), Clearfil® SA luting (SL, Kuraray Medical) and Maxcem (MC, Kerr) were used as self-adhesive resin cements. The facial surface of bovine incisors was ground with wet SiC paper up to 600 grit to prepare the enamel and dentin surfaces. Au-Ag-Pd alloy and a ceramic block were sand-blasted by Al_2O_3 particles. A composite resin block was fabricated by Clearfil® CR Inlay (Kuraray Medical) and adhered with the cements to various adherends according to the manufacturer's instructions. TBS was determined after storage for 24 hours in water at 37℃ (n=8). The data was analyzed by one-way ANOVA and Tukey's test (α=5%). TBS with the self-adhesive resin cements tended to be significantly lower than those with the cements based on composite resin and MMA. Although the self-adhesive resin cements were easy to handle because no pre-treatment was necessary, the lower TBS values may endanger their clinical performance.

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