A long-term prospective study of the etched-cast restoration.

The etched-cast restoration was introduced in 1980, and a prospective study was initiated in March 1981 to determine if resin-bonded prostheses would prove to be a long-term alternative to traditional complete and partial coverage restorations. All resin-bonded restorations placed since that time in the author's private prosthodontic practice have been recorded in the study. The success rate of 127 restorations has been 92.9%, with a mean longevity of 5 years and 8 months.