Flexural strength, modulus, work of fracture and degree of conversion of composites stored dry for 15 min or 24 h. The horizontal bars indicate that no statistical differences exist between the 15 min and 24 h data. Lower case letters compare the 15 min data for a given property, upper case compare the 24 h data. (2-way ANOVA, Holm Sidak, p < 0.05). The vertical bars represent the standard deviations.