Resistance to bacteria of plastics used in dental practice.

The resistance to bacteria of composition filling materials (Evicrol, Isopast, Micromix and Superlux), of acrylic base-plate used for removable dentures and of acrylic (Medident) teeth has been examined. Out of the 6 samples tested with Pseudomonas aeruginosa in accordance with the Hungarian standard, Evicrol, Superlux and the base-plate proved to be resistant; Isopast was attacked moderately and Medident teeth and Micromix showed intermediate results.