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

Table 3

Agreement between digital models and plaster casts in assessment of ICON.

	Weighted score			Directional difference		Standardize difference	Absolute difference		p value	ICC	95% Confidence Interval
	Mean	SD	Median	Mean	SD		Mean	SD
Pre-treatment plaster cast	57.05	20.21	58	-1.23	11.52	-0.107	9.08	7.04	0.561	0.903	0.817-0.949
Pre-treatment digital model	58.28	18.29	59
Post-treatment plaster cast	12.97	6.96	13	-0.97	5.50	-0.177	3.54	4.29	0.303	0.859	0.733-0.926
Post-treatment digital model	13.95	8.64	13
Treatment change in plaster cast	-44.08	22.05	-47	0.26	11.92	0.022	9.13	7.53	0.838	0.922	0.852-0.959
Treatment change in digital model	-44.33	21.7	-47

Standardized difference, D = mean directional difference/standard deviation of directional differences (, small; 0.2<, moderate; and , large).