TRIBOLOGICAL BEHAVIOR OF COMPOSITE RESIN

Ameer, A. K.; Zeinab, A. H.; Ali, W. Y.; Badran, A. H.

doi:10.21608/jest.2025.425665.1135

TRIBOLOGICAL BEHAVIOR OF COMPOSITE RESIN

Document Type : Original Article

Authors

Production Engineering and Mechanical Design Dept., Faculty of Engineering, Minia University, El-Minia, EGYPT

10.21608/jest.2025.425665.1135

Abstract

The present work investigates the friction coefficient, wear resistance and voltage
generated from the sliding of resin composite made by bulk-fill and incremental layering by continuous and pulsed light curing modes on abrasive paper as the counter surface to compare the performance of the tested specimens. The experiments have been carried out at reciprocating motion of low velocity to simulate the oral masticatory condition.
It was found that test specimens prepared by continuous curing light of two layers showed the highest friction values at dry sliding. Friction coefficient decreased by increasing applied load. At water wet sliding, test specimens of layers displayed higher friction values than bulk fill ones. In addition, voltage increased as the applied load increased, where specimens of bulk fill displayed the highest voltage, while specimens of layers showed the lowest voltage values. Water wet sliding decreased the voltage due to the presence of water. Specimens prepared by pulsed curing light showed lower friction than that determined for continuously cured ones. At water wet sliding, pulsed light cured test specimens displayed higher friction than that show in dry sliding. Specimens treated by pulsed light showed higher voltage values that that observed for that treated by continuous light curing. Finally, water wet sliding caused higher wear values that dry sliding for continuously light cured specimens, while the lowest wear was shown for three layers specimens. Besides, bulk fill specimens displayed the lowest wear in water wet sliding.

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