Effect of Botulinum Toxin Injection on Asymmetric Lower Face with Chin Deviation
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. Si...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-07-01
|
| Series: | Toxins |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-6651/12/7/456 |
| _version_ | 1797562199011491840 |
|---|---|
| author | Dongwook Kim Ju-Hyun Park Vittorio Favero James Mah Young-Soo Jung Seong Taek Kim |
| author_facet | Dongwook Kim Ju-Hyun Park Vittorio Favero James Mah Young-Soo Jung Seong Taek Kim |
| author_sort | Dongwook Kim |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T18:24:53Z |
| format | Article |
| id | doaj.art-a165b6f2cfad457cad8cda0377645de8 |
| institution | Directory Open Access Journal |
| issn | 2072-6651 |
| language | English |
| last_indexed | 2024-03-10T18:24:53Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Toxins |
| spelling | doaj.art-a165b6f2cfad457cad8cda0377645de82023-11-20T07:04:33ZengMDPI AGToxins2072-66512020-07-0112745610.3390/toxins12070456Effect of Botulinum Toxin Injection on Asymmetric Lower Face with Chin DeviationDongwook Kim0Ju-Hyun Park1Vittorio Favero2James Mah3Young-Soo Jung4Seong Taek Kim5Department of Oral & Maxillofacial Surgery, Yonsei University College of Dentistry, Seoul 03722, KoreaDepartment of Orofacial Pain & Oral Medicine, Yonsei University College of Dentistry, Seoul 03722, KoreaSection of Dentistry and Maxillofacial Surgery, Department of Surgery, University of Verona, 37129 Verona, ItalyAdvanced Education Program in Orthodontics and Dentofacial Orthopedics, School of Dental Medicine, University of Nevada, Las Vegas, NV 89154, USADepartment of Oral & Maxillofacial Surgery, Yonsei University College of Dentistry, Seoul 03722, KoreaDepartment of Orofacial Pain & Oral Medicine, Yonsei University College of Dentistry, Seoul 03722, KoreaThe 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.https://www.mdpi.com/2072-6651/12/7/456botulinum toxinsasymmetryposteroanterior (PA) cephalometrics |
| spellingShingle | Dongwook Kim Ju-Hyun Park Vittorio Favero James Mah Young-Soo Jung Seong Taek Kim Effect of Botulinum Toxin Injection on Asymmetric Lower Face with Chin Deviation Toxins botulinum toxins asymmetry posteroanterior (PA) cephalometrics |
| title | Effect of Botulinum Toxin Injection on Asymmetric Lower Face with Chin Deviation |
| title_full | Effect of Botulinum Toxin Injection on Asymmetric Lower Face with Chin Deviation |
| title_fullStr | Effect of Botulinum Toxin Injection on Asymmetric Lower Face with Chin Deviation |
| title_full_unstemmed | Effect of Botulinum Toxin Injection on Asymmetric Lower Face with Chin Deviation |
| title_short | Effect of Botulinum Toxin Injection on Asymmetric Lower Face with Chin Deviation |
| title_sort | effect of botulinum toxin injection on asymmetric lower face with chin deviation |
| topic | botulinum toxins asymmetry posteroanterior (PA) cephalometrics |
| url | https://www.mdpi.com/2072-6651/12/7/456 |
| work_keys_str_mv | AT dongwookkim effectofbotulinumtoxininjectiononasymmetriclowerfacewithchindeviation AT juhyunpark effectofbotulinumtoxininjectiononasymmetriclowerfacewithchindeviation AT vittoriofavero effectofbotulinumtoxininjectiononasymmetriclowerfacewithchindeviation AT jamesmah effectofbotulinumtoxininjectiononasymmetriclowerfacewithchindeviation AT youngsoojung effectofbotulinumtoxininjectiononasymmetriclowerfacewithchindeviation AT seongtaekkim effectofbotulinumtoxininjectiononasymmetriclowerfacewithchindeviation |