Botox for a gummy smile relaxes elevator muscles of the upper lip
https://www.scribd.com/document/1008763467/Botox-Cosmetic-Wrinkle-Smoothing-Subtle-Enhancements-174935
Botox for a gummy smile relaxes elevator muscles of the upper lip, reducing gum display when you smile while preserving a natural, expressive look when speaking or laughing.