[Testing of the marginal closure of so-called carvable composites]

66 composite filings of the brands Classecond, Epoxydent and Compocap were examined for marginal fit. The two first brands can be carved, the latter cannot. The fillings were examined by vacuum color diffusion tests, and replicas of the fillings were viewed with the EM. 91% of the Compocap fillings were found to be color impermeable, while 64% of the Epoxydent and 55% of the Classecond fillings proved to be leaking at the margins. The EM examination showed that carving the fillings causes considerably more leakage and short margins. For this reasons, it is unadvisable to carve even the carvable composits. The use of such materials then of course becomes questionable.