Replacement and initial placement of tooth colored restorations: a review and discussion.

Disagreement exists among dentists concerning reasons for initial placement and replacement of composite restorations, although specific criteria have been established by several reports. According to numerous studies, the longevity of composite restorations appears to be lower than for amalgam restorations; however, with advances in dental materials, composite resin longevity should increase. Inadequate operator technique and poor patient compliance are contributing factors for restoration failure. Research regarding enamel and dentin bonding systems will produce better quality and more durable results for composite restorations.