Comparison of the Efficacy of OnabotulinumtoxinA and AbobotulinumtoxinA at the 1:3 Conversion Ratio for the Treatment of Asymmetry after Long-Term Facial Paralysis

摘要

Background: Botulinum toxin A injection into the nonparalyzed side is used to treat asymmetry resulting from facial palsy. OnabotulinumtoxinA and abobotulinumtoxinA units are not equivalent. The authors compared the conversion ratio of 1:3 in patients with facial palsy.