AI Article Synopsis
- The study examined the effectiveness of abobotulinum toxin injections for treating masseter hypertrophy in ten Brazilian women, specifically assessing aesthetic improvements over a 24-week period.
- The results showed a significant decrease in facial width, with maximum facial thinning observed at 12 weeks, and all participants reported an improvement in bruxism.
- While common side effects included masticatory fatigue and smile limitations, 80% of the patients expressed a desire to undergo the treatment again.
Article 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.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4230655 | PMC |
| http://dx.doi.org/10.1590/abd1806-4841.20143200 | DOI Listing |
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