Botulinum toxin type A in the management of masseter muscle hypertrophy.
OBJECTIVE
We sought to evaluate the response of 6 patients with masseter muscle hypertrophy to botulinum toxin type A therapy.


METHODS
Six patients with unilateral or bilateral masseter muscle hypertrophy received intramuscular injection of the botulinum toxin type A. The functional and cosmetic results were evaluated as well as recurrence.


RESULTS
In all patients, satisfactory regression of the masseter muscle hypertrophy occurred and mild muscular pain was relieved. Recurrence was observed in 2 cases.


CONCLUSIONS
The use of botulinum toxin type A in masseter muscle hypertrophy therapy was shown to be a successful and safe treatment method. This procedure to control parafunctional activities involving the masticatory muscles of patients appears to be useful.
Castro
Wagner Henriques
WH
Department of Oral Surgery and Oral Pathology, School of Dentistry, University of Minas Gerais, Belo Horizonte, Brazil. wagnercastro@ufmg.br
Gomez
Rodrigo Santiago
RS
Da Silva Oliveira
Jacqueline
J
Moura
Mariela Dutra Gontijo
MD
Gomez
Ricardo Santiago
RS
D000293:Adolescent; D000328:Adult; D019274:Botulinum Toxins, Type A / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D006984:Hypertrophy / Q000188:drug therapy; D007273:Injections, Intramuscular; D008297:Male; D008406:Masseter Muscle; D009135:Muscular Diseases / Q000188:drug therapy*; D009465:Neuromuscular Agents / Q000008:administration & dosage*; D012008:Recurrence; D016896:Treatment Outcome
D009465:Neuromuscular Agents; D019274:Botulinum Toxins, Type A