Dr. Silvia Hoyos
Aesthetic Dentistry.

Botulinum toxin has a relaxing action on the

muscle contraction force. When the force of the masseter muscles is intense, there is usually a history of bruxism and this force creates hypertrophy (the muscle grows), making the face look wider and the features stronger. By infiltrating toxin, the muscle

it loses contraction force and therefore loses volume over time, making the face look much more contoured.