The current state of dentine bonding systems: a review of materials and techniques.

The acid-etch technique for bonding composite resin to enamel is a well-established clinical procedure. Although bonding composite resin to dentine has proved to be a difficult challenge, it has become an indispensable link in aesthetic dentistry. The purpose of this article is to provide a brief history of dentinal bonding as well as an overview of clinical indications and available products for the bonding of composites and/or amalgam.