New perspectives on dentin adhesion--differing methods of bonding.

The advent of adhesive dentistry has had a dramatic effect on the practice of aesthetic dentistry, significantly expanding the range of treatment alternatives that clinicians can provide for their patients. Although adhesion is generally associated with the total bonding technique, adhesive systems can be applied in several different manners that include selective, separate, and secure bonding. It is the goal of this article to present the different bonding procedures, to explain the rationales behind each, and to formulate their indications.