. 2017 Mar 15;11(1):36–42. doi: 10.15171/joddd.2017.007

Table 2. The means (standard deviations) of marginal gaps in µm .

Composite resin type	Composite resin temperature		Intra-group P-value
Composite resin type	Room temperature	After 40 cycles of preheating	Intra-group P-value
Dimethacrylate	35.9 (4.7)	20.2 (3.2)	<0.001^*
Silorane	22.2 (3.3)	14.4 (2.2)	<0.001^*
Inter-groupP-value	<0.001^*	<0.001^*	—

^* Statistically significant