Quantum Horizons

How Many Units of Botox Do I Need for Tmj?

Robert Thorne Oct 18, 2026 6 min read

Find out expert answers on How Many Units of Botox Do I Need for Tmj.

Bruxism and square jaw are the most common indications for botulinum toxin injection. For square jaw, inject 8–10 BU per point into masseteric muscle at 3 to 4 points. A dose for masseter muscle is 25–30 BU and temporal muscle is 15–20 BU per one side in the treatment of bruxism.