Proximoclusal composite restorations in primary molars: a six-year follow-up.

Composite resin was tested in shallow, class II cavities in 91 primary molars. The proportion of successful restorations decreased from 86 percent after the first year to 38 percent from the fourth to the sixth year. Altogether, 46 percent were failures; significantly more failures occurred in the upper molars. The composite resin (concise Cap-C-Rynze) proved to be too sensitive to variations in clinical management.