Treatment of Bilateral Macrostomia (Lateral Lip Cleft): Case Report

Background: macrostomia as a rare facial deformity is classified among facial clefts. it originates from failure in union of maxillary and mandibular prominences of first brachial arch during 7th embryonic week. case presentation: we report a case of bilateral macrostomia (bilateral lip cleft) in a female newborn as a sole entity without other skeletal and facial deformities. the cleft was repaired by a simple linear triangular flap using extra oral landmarks to locate lip commissures. patient was followed through a six-month period. acceptable results were gained in mouth appearance as well functional aspects. conclusion: commissural repair through a linear flap can result in minimal visible scar with satisfying results in both esthetics and functional aspects.