Table 2. Flexural strength (FLS) and flexural modulus (FLM) mean values (standard deviation) for resin composites considering both heating conditions.

	FLS (MPa)		FLM (GPa)
	No preheating	Preheating	No preheating	Preheating
Universal Restorative	141.3 (12.7) a, B	157.9 (2.90) a, A	11.4 (1.2) a, B	13.7 (0.8) a, A
Filtek Supreme Ultra	137.1 (2.43) a, B	152.6 (1.97) a, A	12.2 (1.1) a, B	14.1 (0.7) a, A

* Tukey’s post-hoc test: different capital letters in the same row a indicate statistically significant difference. Different lowercase letters in the same column indicate statistically significant differences. Standard deviation in parentheses.