From: Changes of lip morphology following mandibular setback surgery using 3D cone-beam computed tomography images
Lip area (cm2)
Δ(T2 − T1)
Mean
SD
p value
Upper lip
Lateral view
6.28
10.59
0.078*
Frontal view
8.21
45.18
0.560
Lower lip
−15.57
10.33
0.001**
−12.69
41.46
0.334