. Author manuscript; available in PMC: 2015 Nov 9.

Published in final edited form as: Orthodontics (Chic.). 2011 Fall;12(3):202–209.

Table 4.

Molar differences between T1 and T2

		Paired differences
				95% CI
		Mean	SD	Lower	Upper	P value
Buccal plate thickness	MB_UR6-T1–MB_UR6-T2	0.7182	0.8055	0.4199	1.0165	^*
	DB_UR6-T1–DB_UR6-T2	0.7679	0.5993	0.5460	0.9898	^*
	MB_UL6-T1–MB_UL6-T2	0.8396	0.5043	0.6528	1.0264	^*
	DB_UL6-T1–DB_UL6-T2	0.7296	0.5753	0.5166	0.9426	^*
Expansion	U6-T1–U6-T2	4.6943	3.2198	3.5017	5.8869	^*
Root angulation	UR6-T1–UR6-T2	1.1679	4.9314	−0.6587	2.9945	NS
Root angulation	UL6-T1–UL6-T2	−1.9250	4.5942	−3.6267	−0.2233	^*

significant; NS, not significant; SD, standard deviation; CI, confidence interval; UR6, maxillary right first molar; UL6, maxillary left first molar; T1, before expansion; T2, postexpansion; U6, interpremolar measurement; ang, palatal angular measurement.