Development and Performance of Composite from Modified Nano Filler with Plasma Treated Fiber and Heat Cured Acrylic Denture Base Material on Some of Its Properties ? In Vitro Study

There are alternative materials to what is used now a day in various prosthetic appliances that have proved their success. However, there are still high need for more development of a new material because of problems and defect in mechanical properties of such alternatives which is not satisfied. (1) There are demands on efficient materials that cost less, substitute material. Investigation a new concept of combining salinized zirconium oxide (ZrO2) nano filler and plasma treated polypropelene (pp) with PMMAm, aiming to improve the performance of dental materials. Materials and Methods Zirconium oxide nanoparticles had salinated within a layer of (trimethoxysilyl) propyl methacrylate (TMSPM) before mixing with the monomer methylmeth acrylate in a percentage 2.0 % by weight depending on the pilot study, and oxygen plasma treated polypropelene fibers also 2.0 % which mixed homogeneously with powder (PMMA), then mixed together using general procedure. According to the performed tests, four group had divided and prepared as samples, each one of these groups consisted of (14.0) samples and these were subdivided into 2.0 groups, the control and experimental groups. The tests which are conducted were tensile strength, water sorption and solubility test, surface roughness, and wettability. Results Highly and sufficiently increasing in tensile strength (62.1143 N/mm2) happened with the incorporation of 2.0 % Wt. salinized zirconium oxide nanofiller and 2.0 % modified by plasma pp fibres. A significant increase (p = 0.22) in water sorption (0.15349 mg/cm2), but the water solubility ( 0.0278133 mg/cm2) were significantly decreased with the addition of silanized (ZrO2) Nano particles and oxygen plasma treated pp fibers group compared with the control one. A significant difference ( p = 0.22) in surface roughness appeared, and highly significant decrease in contact angle of wettability test by using independent samples t-test for statistical analyses. Conclusions The addition of silanized ZrO2 nanoparticles and oxygen plasma treated pp fibers to heat cure acrylic resin material improves the tensile strength, solubility and wettability, although this addition increases water sorption and surface roughness but within limited range.