Evaluation of the flexural strength and surface roughness of dental material after immersion in coffee

This study was done in order to evaluate the changes flexural strength and surface roughness dental material restorations after immersion coffee. Bars specimens (2mm x 2mm 25 mm) of Z100 3M/ESPE were made according ISO 4049 using aluminum molds. After curing, then randomly divided into five groups conditioned at 37°C physiological serum. In all groups, except control, samples immersed coffee for ten minutes daily. group A, For B, be coffee, distilled water one minute. C, mouthwash D, brushing minutes, with load 250g 4250 cycles treatments stored serum again. control group, only The 2 subgroups storage time, six nine weeks, respectively. Flexural determined three point bending test a universal testing machine. All tests carried out room temperature maintained during test. Surface measurements tester. data analyzed one-way analysis variance (ANOVA) followed by Dunnet tests. ANOVA indicated no difference means significant observed between (coffee).