Poly methyl methacrylate (PMMA) is the dominant acrylic that is widely used to produce partial and complete dentures. Denture fractures are caused by fatigue owing to repetitive masticatory, flexural and impact loads produced by dropping. The mechanical properties of dentures have been developed by reinforcing with various agents like rubbers, fillers and fibers. Progressively, novel dental materials reinforcement tactics have been developed following the advancement in Nano dentistry. Nonetheless, the issue pertaining to the superior mechanical properties of the PMMA still exists albeit it's biocompatible and aesthetic properties. In recent years, the nanostructure materials have received much attention due to their high surface area to volume ratio that boosts interaction and delivers new biological, physical, and chemical characteristics. Many studies have evaluated the usage of nanotubes and nanofiber in dental composites, however, the data estimating the reinforcement issue of nanotubes and nanofibers in PMMA have been scarce. This article is aimed to review the progress related to the development of mechanical properties of denture base materials in addition to the latest advances and prospective developments for PMMA acrylic resins reinforcement. Poly methyl methacrylate PMMA composites, strengthening of dentures, Nano-fillers surface treatment, biomedical Nano additives for mechanical improvement, Nano-fillers of PMMA, biomedical ceramic Nano-fillers, biomedical metallic materials as Nanofillers, hybrid reinforcement of PMMA, biocompatibility of polymeric PMMA composite, biomaterial for dental applications.

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The investigation was concentrated on preparation of bioactive pure cordierite ceramic and evaluate the phase transformation which excepted to form during sintering process. Cordierite prepare by chemical co precipitation, integrated Cordierite gel with water-based sol–gel which begin essentially from Alumina Al2O3, magnesium oxide MgO and silicon oxide SiO2. Different specimens were fabricated with various weight percentage of Al2O3, Mgo and SiO2 powders. All specimens were prepared in cylindrical shape by using hydraulic press at pressure of 4 bar with holding time at this pressure for 30 minutes. Firing presses achieve at 10000C and 12500C with 2 hour holding time. The characterization of microstructure has been done by using Field Emission Scanning Electron Microscope (FESEM), which revealed homogenous distribution of the compounds with few porosities. The x-ray diffraction for phase transformation which occur during sintering process. The structure analysis of specimens shows at 1250°C cordierite phase form, also the results are shown formation of cristobalite, spinel, protoestatite and corundum with cordierite phase.

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