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Abstract: Resin polymers, such as Polymethyl methacrylate (PMMA), have been used in denture fabrication because of their easy molding ability and flawless appearance. However, these PMMAs are not the most desirable material when dealing with mechanical strength, electrical conductivity and thermal stability. In this study, the addition of fillers, such as Nano-Aluminum Oxide (Nano-Al2O3) and plasma treated polypropylene (PP) fibers, to these polymers has been explored. Nanocomposites are desired in this case for their low density and affordable cost, high corrosion resistance and basic fabrication methods. One hundred and fifty samples, of different concentrations of Nano-Al2O3 and PP fibers, were created and subdivided to undergo a variety of tests: impact and transverse strength tests, surface hardness and roughness tests, and thermal conductivity tests (using the Hot disk TPS sensor). With the addition of the Nano-Al2O3 and the plasma treated PP fibers to the PMMA, the impact strength, surface harness and thermal conductivity of the dentures were all greatly improved.

Reference: Journal of College of Dentistry of University of Baghdad, 27:3 (2015)

DOI: 10.0001/801