Table 2.

Results of one-way repeated measures ANOVA

Source	Type III sum of squares	Df	Mean square	F	P
Interlabial gap height (mm)	417.647	4	104.412	93.734	<0.001
Intercommissural width (mm)	21.442	4	5.361	0.356	0.839
Smile index	42.322	4	10.581	11.300	<0.0001
Incisal edge-to-upper lip distance (mm)	6.12	4	1.53	0.79735	0.530
Incisal edge-to-lower lip distance (mm)	271.945	4	67.986	20.901	<0.001
Display zone area (mm2)	989,294.860	4	247,323.715	16.250	<0.001