Synthesis and Characterization of PMMA/HAP/MgO Nanocomposite as an Antibacterial Activity for Dental Applications

The current work focuses on the preparation of magnesium oxide nanoparticles using aqueous chloride salts and sodium hydroxide powder by a simple chemical precipitation method at an annealing temperature 700 °C for 6 hours. structural morphological properties were investigated X-ray diffraction (XRD). Polycrystalline cube Scherer equation showed crystalline size 17.23 nm. EDS analyzes high purity. Scanning electron microscopy (FESEM) spherical shape particles. With particle within range (65-185) While (PMMA)-HAP nanocomposite was synthesized. -MgO) use in dental applications such as fillings dentures. A (PMMA-HAP-MgO) manufactured manual molding strengthening poly methyl methacrylate polymer with certain weight ratios(1%,5%,and 10%) from mixture nano where added ratios (99%PMMA-1%HAP,95%PMMA-7.4%HAP-0.3%MgO,and 90%PMMA-9.4%HAP-0.3%MgO). topographical (surface roughness) samples studied testing them atomic force microscope. results increase value pure PMMA, nanoparticle filler 5% (4.7% HAP -0.3% MgO) affected both roughness root mean square ratio distribution surface composite particles led to more than pure. antibacterial activity polymeric overlay examined bacteria that cause caries (Streptococcus mutans), zone inhibition (1 mm, 2 5 mm) no PMMA.