Lower facial remodeling with botulinum toxin type A for the treatment of masseter hypertrophy
An. bras. dermatol
;
89(6): 878-884, Nov-Dec/2014. tab, graf
Article
in English
| LILACS
| ID: lil-727648
ABSTRACT
BACKGROUND:
Masseter hypertrophy has been treated with botulinum toxin injections because of esthetic complaints especially in Asians.OBJECTIVES:
The goal of the present study was to evaluate the efficacy of abobotulin toxin use in masseter hipertrophy treatment in Brazilians.METHODS:
Ten Brazilian female patients with masseter hypertrophy were subjected to injections of 90U of abobotulinum toxin A applied on each side respecting the safety zone stabilished in literature and were followed up for 24 weeks.RESULTS:
When analyzing the coefficients between measures of middle and lower third of the face obtained from standardized photographs, an increase was observed, with statistical significance at 2 weeks (p=0.005) and 12 weeks (p=0.001). The progression of lower third reduction was 3.94%, 5.26%, 11.99%, and 5.47% (2, 4, 12, and 24 weeks respectively). All patients showed improvement in bruxism after treatment. Observed adverse effects were masticatory fatigue, smile limitation, and smile asymmetry.CONCLUSION:
The use of abobotulinum toxin A for masseter hypertrophy is effective in Brazilians and reached its maximum effect of facial thinning at 12 weeks. Smile limitation had a higher incidence compared to that reported in the literature and may result from risorius muscle blockage caused by toxin dissemination. Despite its side effects, 80% of the patients would like to repeat the treatment. .
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Botulinum Toxins, Type A
/
Hypertrophy
/
Masseter Muscle
/
Neuromuscular Agents
Type of study:
Evaluation studies
Limits:
Adult
/
Female
/
Humans
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
An. bras. dermatol
Journal subject:
Dermatology
Year:
2014
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Private practice particular - Criciúma (SC), Brazil/BR
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