Physical Properties of Different Composites

概要

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The purpose of this study was to determine the flexural strength (FS), flexural modulus (FM), depth of cure (DC), polymerization shrinkage (PS) , and microhardness (VH) of the following composites:・Two packable composites - Filtek P-60 and Solitaire 2; ・One ion-releasing composite - Ariston AT; and・Two hybrid composites - Charisma and Filtek Z-250. Data of the different tests conducted were obtained as follows: ・FS and FM data were determined with a universal-testing machine; ・Polymerization shrinkage was determined using the apparatus of Watts and Cash; ・Depth of cure was measured with a micrometer (Mitotuyo, UK); and ・Microhardness was measured with a Shimadzu Microhardness tester (500 g, 15 seconds). All data of the different tests were statistically analyzed by one-way variance analysis (ANOVA) , which yielded the following results: ・Filtek Z-250 showed the statistically highest flexural strength and modulus values. ・Solitaire 2 exhibited the highest shrinkage, while the volumetric shrinkage results of Filtek Z-250 and Filtek P-60 ranked the lowest. ・For depth of cure, there were no statistically significant differences among all materials tested (p<0.05). ・Microhardness results revealed the following tendency: Filtek Z-250=Filtek P-60 > Ariston AT=Solitaire 2=Charisma.
日本歯科理工学会の論文