PURPOSE: An asymmetric smile, caused by loss of function of the lip depressors, can be
functionally and cosmetically debilitating. Although some surgeons report excellent results
with muscle transfer to the lower lip, many facial reanimation surgeons find that dynamic
techniques do not consistently address the lower lip. Our objectives were to retrospectively
review our outcomes after treatment of the asymmetric lower lip, and to propose a
progressive, stepwise algorithm for the management of lower lip asymmetry in facial …