Document Type
Article
Publication Date
7-17-2020
Publication Title
Toxins
Volume
12
Issue
7
First page number:
1
Last page number:
9
Abstract
The purpose of this study was to compare the efficacy of botulinum toxin (BoNT) in masseter muscle reduction depending on the amount of chin deviation. Exploring distinctive effects of BoNT relative to the characteristics of facial asymmetry will aid in planning and predicting treatment outcomes. Sixteen adult volunteers were classified into two groups according to the degree of menton deviation observed in posteroanterior cephalograms. Eight had a menton deviation of 3 mm or more and the other eight had less than 3 mm. A total of 25 Units of BoNT was injected into the unilateral masseter muscle of the prominent side for each participant. Changes in the volume and bulkiest height of the lower face on each side were measured with a 3D laser scan at four time points: before and 4, 8, and 12 weeks after the injection. Two-way mixed ANOVA was employed for analyses. The volume and bulkiest height of the injected side decreased over time in both types of asymmetry, with significant differences at each time point. The reductions in the volume and bulkiest height were significantly greater in subjects without chin deviation. The reductions in the volume and bulkiest height of the lower face using BoNT are more effective for subjects without chin deviation.
Keywords
Botulinum toxins; Asymmetry; Posteroanterior (PA) cephalometrics
Disciplines
Bacteriology | Plastic Surgery | Toxicology
File Format
File Size
1.048 KB
Language
English
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Repository Citation
Kim, D.,
Park, J.,
Favero, V.,
Mah, J.,
Jung, Y.,
Kim, S. T.
(2020).
Effect of Botulinum Toxin Injection on Asymmetric Lower Face and Chin Deviation.
Toxins, 12(7),
1-9.
http://dx.doi.org/10.3390/toxins12070456