Abstract
The compatibility of selected composite resins was compared with Scotchbond Dual Cure adhesive. In addition, the influence of the types of composite resins on microleakage was investigated. No significant difference was found in microleakage of preparations restored with Scotchbond Dual Cure adhesive and the five composite resins of other manufacturers from restorations inserted with the manufacturers bonding agent and composite resin. Severe leakage occurred at the gingival dentinal margin in all restorations. However, leakage was greatly reduced when a less viscous microfilled composite resin was used in conjunction with various bonding agents. The findings of this study indicate that the higher viscosity and lower water-sorption values of some composite resins may adversely influence micro-leakage regardless of the bonding agent used.
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