Three-Dimensional Change of Lip after Two-Jaw Surgery in Facial Asymmetry Using Facial Scanner

A facial scanner and three-dimensional computed tomography (CT) were used to evaluate the change in lip asymmetry before after two-jaw surgery for 22 patients with (menton deviation > 3 mm). We labrale superius (Ls), deviated/non-deviated-side cheilions (Ch-D/Ch-ND), inferius (Li) construct upper lower planes asymmetry. correlation analysis was performed determine factors related vertical (ΔChZ-D/ND). In transverse axis, Ch-D Li moved improve surgery. All landmarks, except Ls, backward anteroposterior axis. significant upward movement observed all hard tissue landmarks; however, there no changes soft tissue. plane, difference height of Ch-ND significantly reduced (1.38 mm vs. 0.72 ΔChZ-D/ND showed correlations mandibular setback. ΔCh-ND maxillary impaction non-deviated side. The improvement post-surgery mainly achieved by rather than Ch-ND.