“…A possible reason for these conflicting findings is that symmetry and esthetics were assessed primarily on 2D nasolabial images [24,25,27]. Although Russell et al [23] and Russell and Tompson [26] used nose casts for the evaluation of symmetry, they performed relatively few measurements, which may not have reflected the true nasolabial asymmetry. Moreover, the esthetics of the nasolabial area should be assessed on a 3D stimulus, as the face is a 3D structure.…”