[Comparison of two cavity preparations to examine the efficacy of dentin adhesives]

Cylindrical cavities and class V cavities were treated with six different dentin adhesives before filling them with composites. Cavity margins were studied quantitatively with defined criteria before and after alternating thermal stress tests in a scanning electron microscope. In both cavity preparations groups of dentin adhesives with significantly different efficacies (p 0.05) were identified. The efficacy of dentin adhesives and their effect on marginal adaptation of composite materials in dentin can be determined rather easily in cylindrical cavities.