Three body wear studies of five dental composites preconditioned in food simulating media

Abstract

Progressive three body wear up to 30 min for five dental composites (Concise, Heliomolar, Occlusin, P‐30, Profile, TPH) stored for 9 months at 37 $^{\circ}$ C in citrate, lactate and PBS buffers, 25 and 75% ethanol media, has been measured using a wear tester. Particle size of the filler and the storage media are found to play dominant roles in determining the extent of wear. Heliomolar, which is a microfilled composite, shows maximum wear whereas wear is least in composites containing filler particles of conventional and hybrid size such as P‐30 $({>} 1\mu$ m). The storage media is found to attack and degrade glass filler particles compared to composites having quartz fillers.