Botulinum Toxin Type A (BOTOX®) Treatment of Masseter Muscle Hypertrophy

BOTOX® Treatment of Masseter Muscle Hypertrophy

This study will evaluate the safety and efficacy of a range of doses of botulinum toxin Type A (BOTOX®) for the treatment of patients with bilateral Masseter Muscle Hypertrophy (MMH).

Inclusion Criteria:

-Participants with Masseter Muscle Hypertrophy

Exclusion Criteria:

• Diagnosis of Myasthenia gravis, Eaton-Lambert syndrome, amyotrophic lateral sclerosis, or any other condition that might interfere with neuromuscular function
• Prior botulinum toxin treatment of any serotype to the masseter muscle or lower face
• History of dental or surgical procedure for lower facial shaping or masseter muscle reduction
• History of or current temporomandibular joint disorder (TMJD)