Digital Models as an Alternative to Plaster Casts in Assessment of Orthodontic Treatment Outcomes

Table 4

Agreement of the categorization of improvement in occlusion with respect to ICON scores.

	Improvement scale					Kappa value
	Worse-No difference	Minimally improved	Moderately improved	Substantially improved	Greatly improved
Improvement in plaster cast	2.56 % (1)	5.12 % (2)	5.12 % (2)	15.38 % (6)	71.79 % (28)	0.589
Improvement in digital model	7.69 % (3)	2.56 % (1)	2.56 % (1)	23.08 % (9)	64.11 % (25)