Table 5.

Percentage of dimensional changes of composite specimens over time.

Composite type	Dimensional change (%) (Mean ± SD)
	15 min	2 h and 15 min	6 h	24 h	1 week	1 month
X-tra fil	0.01 ± 0.04	−0.02 ± 0.05	−0.03 ± 0.09	±0.09	0.04 ± 0.08	0.07 ± 0.09
Z250	±0.02	0.01 ± 0.05	0.02 ± 0.06	0.04 ± 0.07	0.09 ± 0.07	0.16 ± 0.06
Ultimate	±0.03	−0.01 ± 0.07	0.01 ± 0.06	0.02 ± 0.07	0.07 ± 0.06	0.21 ± 0.01

Note: Fifteen specimens in each group.