BioMed Research International

Research Article

Model Analysis of Digital Models in Moderate to Severe Crowding: In Vivo Validation and Clinical Application

Table 4

Comparison of linear measurements between mild and severe crowding in mandibular dentition (mm).


	Cast (C)		Cast scan (CS)		Intraoral scan (IS)		Mean difference ( value)
	(mean ± SD)		(mean ± SD)		(mean ± SD)
	Mild group	Severe group	Mild group	Severe group	Mild group	Severe group		Mild group	Severe group

Mesiodistal width of central incisor							C-CS	−.01 (1.00)	.04 (1.00)
							C-IS	−.02 (.1.00)	.03 (.62)
							CS-IS	−.01 (1.00)	−.01 (1.00)

Mesiodistal width of lateral incisor							C-CS	−.02 (1.00)	.01 (1.00)
							C-IS	.06 (.35)	.03 (.46)
							CS-IS	.04 (.99)	.02 (1.00)

Mesiodistal width of canine							C-CS	.03 (.48)	.01 (1.00)
							C-IS	.02 (1.00)	.01 (1.00)
							CS-IS	−.00 (1.00)	−.01 (1.00)

Mesiodistal width of first premolar							C-CS	.06 (.02)	.11 (.33)
							C-IS	.12 (.00)	.10 (.01)
							CS-IS	.05 (.42)	−.00 (1.00)

Mesiodistal width of second premolar							C-CS	.09 (.01)	.07 (1.00)
							C-IS	.19 (.00)	.06 (.00)
							CS-IS	.10 (.03)	−.01 (1.00)

Mesiodistal width of first molar							C-CS	.11 (.00)	.03 (1.00)
							C-IS	.10 (.00)	.04 (1.00)
							CS-IS	−.01 (1.00)	.01 (1.00)

Crowding							C-CS	.37 (.10)	.63 (1.00)
							C-IS	.55 (.06)	.51 (.02)
							CS-IS	.18 (1.00)	−.12 (1.00)

Mild group (crowding < 3 mm); severe group (crowding > 4.5 mm); mesiodistal width of teeth, = 40; crowding, = 20; values were calculated by RM-ANOVA; ; .