Effect of poly propylene fibers incorporation and their oxygen plasma treatment on tensile strength, wettability and wear resistance of heat cure denture base acrylic resin

Abstract

Background:Recently, Poly propylene fibers with and without plasma treatment have been used to reinforce heatcure denture base acrylic but, so far some of properties like tensile strength , wettability and wear resistance notevaluated yet, the aim of the study is to clarify the influence of incorporation of treated and untreated fibers on theseproperties.Materials and methods: Twenty one specimens were fabricated for every tested property(tensile strength, wearresistance and wettability) that classified into three groups(control, untreated poly propylene fibers reinforcedspecimens and Oxygen plasma treated group)and for each test seven samples were used(n=7). Tensile strength wastested using Instron universal testing machine, wear resistance was evaluated by pin on disk wear measurementmethod while, a digital microscope supplied with high resolution camera was utilized to measure the contact anglereflecting wettability grade. One wayANOVA table and LSD were used to analyze the results.Results: The tensile strength showed a paradoxical effect, plasma treated samples group demonstrated a negativeinfluence in contrary, to the untreated group that revealed positive high significant impression. The plasma treatedgroup had manifested a- positive significant difference regarding wear resistance whilst, the beneficial effect oftreated and untreated Poly propylene fibers addition was obvious with high significant difference.Conclusion: Incorporation of O2 plasma treated and untreated poly propylene fibers to heat cure poly methylmethacrylate resin was beneficial regarding the tested properties except for addition of plasma treated Polypropylene fibers on tensile strength