Facial asymmetry assessment in adults using three-dimensional surface imaging

Progress in Orthodontics

Table 2 Statistical differences in different measurements upon comparison of the upper and lower faces in the asymmetrical and symmetrical subjects

Pairwise comparison	Measurements	Estimated value	Std err	T value	p value
Lower asymmetrical vs. lower symmetrical	RMS	0.8033	0.1273	6.31	<0.0001*
Lower asymmetrical vs. lower symmetrical	Mean	0.1097	0.07940	1.38	0.1711
Lower asymmetrical vs. upper asymmetrical	RMS	0.3563	0.08098	4.40	<0.0001*
Lower asymmetrical vs. upper asymmetrical	Mean	−0.02630	0.05130	−0.51	0.6104
Lower symmetrical vs. upper symmetrical	RMS	0.09239	0.07952	1.16	0.2505
Lower symmetrical vs. upper symmetrical	Mean	−0.04893	0.05038	−0.97	0.3358
Upper asymmetrical vs. upper symmetrical	RMS	0.5394	0.1273	4.24	<0.0001*
Upper asymmetrical vs. upper symmetrical	Mean	0.08704	0.07940	1.10	0.2763