Table 3. Descriptive statistics, mean and standard deviation of the fracture force (N) of the experimental groups.

	N	Mean	SD	95% confidence interval for mean
				Lower bound	Upper bound
RC 0.2 mm	8	269.00	108.46	178.32	359.68
RC 0.4 mm	8	347.13	231.00	154.01	540.24
HC 0.2 mm	8	330.00	210.05	154.39	505.61
HC 0.4 mm	8	348.63	143.57	228.59	468.66
Total	32	323.69	174.38	260.82	386.56

Abbreviations: HC, resin composite; RC, resin cement; SD, standard deviation.

Interaction not significant ( p  > 0.05). Main effect of veneer thickness and bonding technique was not significant ( p  > 0.05).