Lower facial remodeling with botulinum toxin type A for the treatment of masseter hypertrophy
| Autor: | Fernanda Homem de Mello de Souza Klein, Fabiane Mulinari Brenner, Maurício Shigeru Sato, Fernanda Manfron Batista Rosas Robert, Karin Adriane Helmer |
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| Jazyk: | English<br />Portuguese |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Anais Brasileiros de Dermatologia, Vol 89, Iss 6, Pp 878-884 (2014) |
| Druh dokumentu: | article |
| ISSN: | 0365-0596 1806-4841 |
| DOI: | 10.1590/abd1806-4841.20143200 |
| Popis: | 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. |
| Databáze: | Directory of Open Access Journals |
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