Microhardness Evaluation of ResiR Sources CompositesPolymerized by Three Different Light

each specimen using a Vickers microhardness tester. Furthermore, morphologies of the polished top surfaces of composites cured with blue ]ight-emitted diede were observed using seanning eleetron microseopy. Resules indicated that eomposites cured with halogen or blue light-emitted diode light yielded higher microhardness values, although it also appeared to depend on the type of composite cuTed, Plasma arc curing aecording to manufacturer's instruetions yielded the lowest microhaTdness values fbr all the materials. Among the materials tested, the nanofi11ed resin composite displayed the highest microhardness values for each curing regime.

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