Table 2. Comparison of compression distance values (in mm) for Ramitec (polyether), Bona-Bite (polyvinyl siloxane), and O-Bite (polyvinyl siloxane) at 6, 4 and 2mm thicknesses.

p-value less than 0.05, statistically significant

Material	N	Mean	Std. dev.	95% Confidence interval for mean
				Lower bound	Upper bound
Ramitec 6mm	12	0.597	0.1578	0.497	0.697
Ramitec 4mm	12	0.525	0.159	0.424	0.626
Ramitec 2mm	12	0.594	0.122	0.516	0.671
Bona-Bite 6mm	12	0.315	0.0657	0.273	0.356
Bona-Bite 4mm	12	0.319	0.065	0.277	0.360
Bona-Bite 2mm	12	0.306	0.065	0.265	0.348
O-Bite 6mm	12	0.625	0.0945	0.564	0.685
O-Bite 4mm	12	0.758	0.133	0.673	0.843
O-Bite 2mm	12	0.670	0.112	0.598	0.741