Effectiveness of a universal adhesive on dentine--an in-vitro study.

The purpose of this study was to test the effectiveness of a universal bonding agent (Prisma Universal Bond) when used in dentine cavities. The measurement of marginal contraction gaps was the basis for determining the effectiveness of this bonding agent. The use of the bonding agent led to a significant reduction in restoration marginal gaps. Thermocycling of restorations with the bonding agent resulted in a widening of the marginal gaps though this was not significant. It was interesting to note that some thermocycled restorations showed no marginal gaps.