Analysis of maxillary asymmetry before and after treatment of functional posterior cross-bite: a retrospective study using 3D imaging system and deviation analysis

Progress in Orthodontics

Table 2 Comparative assessment of hemilateral palatal volumetric measurements recorded in the treated group (TG) and control group (CG)

Group	Timing	Side	Volume (mm³)	Diff	p value*	Mean diff. of the diff	p value**	p value***
MEG	T0	CBS	4817.94 (± 387.00)	334.46 (± 158.64)	< 0.0001	236.37 (± 134.33)	< 0.0001	< 0.0001
	T0	Non-CBS	5152.40 (± 470.72)	334.46 (± 158.64)	< 0.0001
	T1	CBS	6028.00 (± 864.22)	98.09 (± 47.94)	0.736
	T1	Non-CBS	6126.09 (± 864.05)	98.09 (± 47.94)	0.736
CG	T0	CBS	4877.56 (± 520.64)	408.36 (± 140.27)	< 0.0001	28.29 (± 72.02)	0.114
	T0	Non-CBS	5285.93 (± 463.60)	408.36 (± 140.27)	< 0.0001
	T1	CBS	5339.09 (± 582.89)	436.66 (± 124.57)	< 0.0001
	T1	Non-CBS	5775.75 (± 522.84)	436.66 (± 124.57)	< 0.0001

CBS Cross-bite side, non-CBS Non-cross-bite side, NS Non-significant
*p values based on paired Student’ t test for intra-timing side-to-side measurements and set at p < 0.05
**p values based on paired Student’ t test for inter-timing mean differences and set at p < 0.05
***p values based on Independent Student’ t test for inter-groups comparison of the mean of differences and set at p < 0.05