Mechanism and clinical implications of bond formation for two dentin bonding agents.

The mechanism of dentin bonding remains a subject of conjecture. However, sparse evidence is available to support current specific mechanisms for the various systems. Comprehension of the fundamental processes in bonding would encourage a greater appreciation for the critical procedures that ensure clinical success. An SEM study was conducted to examine the mechanism of bonding for two similar dentin bonding systems, Scotchbond 2 and Gluma. For these systems, experimental results support the formation of a mechanical bond resulting from resin infiltration and polymerization within the dentinal matrix. Effective bonding is dependent upon comprehension of the regimented procedures.