READER'S FORUM.

Abstract

Q1. In the present study, the authors used a 2-mm asymmetric setback to group symmetric and asymmetric setback groups. The asymmetric setback is typically necessary when the mandibular asymmetry is yaw-dominant type, but not in cases of roll-dominant or translation-dominant asymmetries. Therefore, some roll and translation asymmetries may have been present in the symmetry group, resulting in different types of bony interferences during surgery and ultimately contributing to mandibular width widening. What were the causes for the widening of mandibular width in the symmetry group?