Table 1.

The t test for horizontal measurements of the intraoral and master cast in the open and closed tray techniques

Impression technique		N	Mean	Std. deviation	Std. error mean	t	P value
Intraoral	Open	40	9.327	3.356	0.531	0.205	0.838
	Closed	40	9.181	2.974	0.470
Master cast	Open	40	9.359	3.376	0.534	0.188	0.851
	Closed	40	9.225	2.970	0.470

Significance level p ≤ 0.05