Prospective Analysis of the Effectiveness of Targeted Botulinum Toxin Type A Injection Using an Ultrasound-Guided Single-Point Injection Technique for Lower Face Contouring
<p>A landmark-guided BoNT-A injection procedure. The borders of the masseter muscle were identified by palpation, and BoNT-A first was injected at the thickest region, followed by two subsequent injections about 1–1.5 cm away.</p> "> Figure 2
<p>Ultrasound image before BoNT-A injection. Prior to the procedure, the thickest location of the masseter muscle was pre-identified using ultrasound. (* represents the thickest part of the masseter muscle).</p> "> Figure 3
<p>Ultrasound (US)-guided BoNT-A injection. With the US system set to B-mode, the thickest region was identified, and injections were administered in that specific area. Real-time monitoring using US confirmed the accurate delivery of injections.</p> "> Figure 4
<p>Ultrasound image showing injection dynamics after BoNT-A injection. (<b>A</b>) The yellow arrow notes the BoNT-A injection needle. Puncture was performed using a 1-cc syringe, with injection into the thickest region of the masseter muscle. (<b>B</b>) Immediate post-injection view.</p> "> Figure 5
<p>Changes in masseter muscle thickness before and after Botox injections. (<b>A</b>) In the upper area, masseter muscle thickness in the landmark-guided group measured 9.92 mm and 8.99 mm before and after the procedure, respectively, while that in the ultrasound-guided group measured 9.93 mm and 8.63 mm. (<b>B</b>) In the middle area, masseter muscle thickness values in the landmark-guided group were 10.22 mm and 8.72 mm before and after the procedure, respectively, while corresponding values in the ultrasound-guided group were 10.83 mm and 8.92 mm. (<b>C</b>) In the lower area, the masseter muscle measured 8.16 mm and 7.49 mm before and after the procedure in the landmark-guided group and 8.43 mm and 7.52 mm in the ultrasound-guided group, respectively.</p> ">
Abstract
:1. Introduction
2. Patients and Methods
2.1. Patients
2.2. Injection Method
2.2.1. Landmark-Guided, Three-Point Injection Technique
2.2.2. US-Guided, Single-Point Injection Technique
2.3. Statistical Analysis
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
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Landmark Guided | Ultrasound Guided | |||
---|---|---|---|---|
Pre | Post | Pre | Post | |
Upper | 9.92 | 8.99 | 9.93 | 8.63 |
Middle | 10.22 | 8.72 | 10.83 | 8.92 |
Lower | 8.16 | 7.49 | 8.43 | 7.52 |
Site | 95% Confidence Interval | Mean ± SD Difference | p Value |
---|---|---|---|
Upper | (0.2893, 0.4478) | 0.37 ± 0.0314 | <0.001 |
Middle | (0.3472, 0.4475) | 0.41 ± 0.0608 | <0.001 |
Lower | (0.1404, 0.3596) | 0.24 ± 0.0134 | 0.0004 |
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Ryoo, H.-J.; Kwon, H.; Choi, J.-S.; Sohn, B.-S.; Yoo, J.-Y.; Shim, H.-S. Prospective Analysis of the Effectiveness of Targeted Botulinum Toxin Type A Injection Using an Ultrasound-Guided Single-Point Injection Technique for Lower Face Contouring. J. Clin. Med. 2024, 13, 5337. https://doi.org/10.3390/jcm13175337
Ryoo H-J, Kwon H, Choi J-S, Sohn B-S, Yoo J-Y, Shim H-S. Prospective Analysis of the Effectiveness of Targeted Botulinum Toxin Type A Injection Using an Ultrasound-Guided Single-Point Injection Technique for Lower Face Contouring. Journal of Clinical Medicine. 2024; 13(17):5337. https://doi.org/10.3390/jcm13175337
Chicago/Turabian StyleRyoo, Hyun-Jung, Ho Kwon, Jae-Seon Choi, Bo-Seong Sohn, Ja-Young Yoo, and Hyung-Sup Shim. 2024. "Prospective Analysis of the Effectiveness of Targeted Botulinum Toxin Type A Injection Using an Ultrasound-Guided Single-Point Injection Technique for Lower Face Contouring" Journal of Clinical Medicine 13, no. 17: 5337. https://doi.org/10.3390/jcm13175337