Synthesis of nanodiamond reinforced dental composite resins and their mechanical properties

To measure mechanical properties of three groups of independently synthesized dental composite resins reinforced by different diameter nanodiamond (ND) clusters, -MPS modified ND (100, 220, 500nm) was added to a mixed resin matrix. Then flexural strength and elastic modulus were characterized for each resin. Mechanical properties of R-100 were significantly lower than that of the other two groups, while R-220 and R-500 presented relatively higher values except at 0.25% content. Results show that different diameter ND has different effects on mechanical properties of dental composite resin. ND of 220 and 500 nm performed better than of 100 nm.