Tissue Surface Adaptation and Clinical Performance of CAD-CAM Milled versus Conventional Implant-Assisted Mandibular Overdenture

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 ( value)	CC MOD	CAD-CAM MOD	t value ( 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.