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[Comparative materials science studies of Evicrol plastic filling material].

The water absorption of Evicrol, its hardness, flexural strength and abrasion resistance were measured and compared with the values found for Adaptic and those for Kallocryl A as a non-filled polymethyl methacrylate plastic. The flexural strength and the abrasion resistance of Evicrol amount to those of Adaptic. The hardness of Evicrol falls also short of that of Adaptic. On the contrary, Evicrol behaves quite differently under water. It was found that the amound of water absorbed by Evicrol is some 3-fold greater than that absorbed by Adaptic, and that saturation is reached considerably slower.