Theoretical investigation of the mechanical properties of graphene-reinforced polymethylmethacrylate for dental applications using a molecular model

Polymethylmethacrylate (PMMA) is a polymer that has been used for several years in dental applications. But its mechanical properties need to be improved that is the tensile, compression, shear, and bulk deformations must be reduced when a strain is applied over PMMA dentures. PMMA is reinforced with graphene getting PMMA-Graphene, PMMA-G, with improved mechanical properties. Three different configurations of PMMA-G are studied and analyzed. Mechanical properties calculation of new PMMA-G polymer is made from a molecular structure of view is done using a method based on which expresses the searched properties of the polymer in terms of connectivity indices and topological variables. Some of the mechanical properties of the PMMA-G are obtained: the bulk modulus, Poisson’s ratios at 298 K, shear modulus, and Young’s modulus. Although some of the obtained properties in this work are not yet reported in scientific literature, the ones that are already are in good agreement.