Flexural Strength and Hardness of Filler-Reinforced PMMA Targeted for Denture Base Application

The aim of this work was to evaluate the flexural strength and surface hardness heat-cured Polymethyl methacrylate (PMMA) modified by addition ZrO2 nanoparticles, TiO2 E-glass fibre at different wt.% concentrations. Specimens were fabricated separated into four groups (n = 10) measure both hardness. Group C control group. specimens in remaining three differed according ratio filler weight PMMA resin (1.5%, 3%, 5%, 7%). A three-point bending test performed determine strength, while measured using Vickers Scanning Electron Microscope (SEM) employed observe fractured specimens. significantly improved filled with 3 5 7 comparison C. All displayed a higher than C, exception 1.5% groups. optimal concentrations enhance between 3–5% ZrO2, TiO2, 3–7% fibre. Furthermore, for all composites, concentration above would improve