Five years' clinical experience with a leucite-reinforced porcelain crown system.

This paper reports on 5 years' experience using a leucite-reinforced porcelain crown system in a private practice setting. A total of 159 units of the porcelain were placed between November 1987 and November 1992. The porcelain can be employed in equigingival and supragingival cases, thereby reducing iatrogenic periodontal problems. The technique and theory of its use is discussed as well as its failure rate, due to fracture, in the various regions of the mouth. Three cases are presented to demonstrate the use of the porcelain.