Noninvasive Correction of Asymmetric Smiles Using Electrical Muscle Stimulation

A 34-year-old Korean man presented with an asymmetric smile, characterized by reduced activity in the left lip elevator muscles, including the levator labii superioris, levator labii superioris alaeque nasi, zygomaticus minor, and risorius. An electrical muscle stimulation device was employed to target these muscles in 20-minute sessions. Immediate improvements in symmetry were noted after each session. The treatment regimen consisted of 10 sessions over 10 weeks, with the results persisting for at least 3 months. The patient reported high satisfaction with the esthetic and functional outcomes.