Table 1.

Descriptive analysis of measured surface deviations between scanned master casts and scanned overdenture bases fabricated by conventional and CAD/CAM milled techniques.

	Positive average values			Negative average values
	CC MOD	CAD-CAM MOD	t value (P value)	CC MOD	CAD-CAM MOD	t value (P value)
M	0.099	0.034	20.77 (0.0001)∗	−0.081	−0.055	10.22 (0.0001)∗
±SD	0.01	0.003		0.009	0.004

^∗ Statistically significant difference. M, mean; SD, standard deviation; CC MOD, conventional compression mold overdenture; CAD-CAM MOD:CAD-CAM mandibular overdenture; (-) average, negative average values; (+) average, positive average values.