Treating masseteric hypertrophy with botulinum toxin

Introducing MSFIT – a modified technique for improving safety in masseter botulinum toxin injections Benign masseter muscle hypertrophy can clinically present as an enlargement of the muscle near the angle of the mandible. Associated pain, functional impairment or aesthetic changes can be treated surgically or non-surgically. The choice of treatment depends on the underlying aetiology, of which there can be multiple. Botulinum toxin type A (BoTNA), the least invasive modality, is commonly used. Treatment selection depends on underlying causes, patient goals (functional, aesthetic, or both), risks and downtime.