Table 2. Mean and SD of axial, total and marginal gaps and comparison between molar and premolar teeth according to independent t-test .

	Tooth				t	P value
	Premolar		Molar
	Mean	SD	Mean	SD
Axial gap	20.15	5.38	22.02	8.32	-0.706	0.486 NS
Total gap	18.61	3.87	22.10	8.27	-1.404	0.171 NS
Marginal gap	14.82	4.47	20.82	9.39	-2.123	0.043*

* = Significant, NS = Nonsignificant