Effect of a second injection of botulinum toxin on lower facial contouring, as evaluated using 3-dimensional laser scanning

Dermatologic Surgery : Official Publication for American Society for Dermatologic Surgery [et Al.]
Hong-Hee LeeHyoung-Seon Baik

Abstract

Botulinum toxin type A (BoNT-A) is widely used to improve the lower facial contour. To determine the difference in the changes in the lower facial contour achieved with 1 and 2 sessions of BoNT-A injections using 3-dimensional (3D) laser scanning. Twenty volunteers were randomly divided into 2 groups. Group I (n = 10) received a single injection, whereas Group II (n = 10) received 2 sessions of injections, the second being administered 4 months after the first. Each injection comprised of 25 U of BoNT-A and was administered to the masseter muscle bilaterally. Evaluation of the effect of BoNT-A injection was performed using 3D laser scan images obtained before the injection and 6 months thereafter in Group I, and before the first injection and 6 months thereafter in the Group II. The mean changes in the volume and thickness in Group I were -1,186 mm and -1.52 mm, respectively; the corresponding changes were -4,072 mm and -3.84 mm in Group II. The reductions were significantly greater in Group II than in Group I. The administration of a second BoNT-A injection is effective for better aesthetic results for the lower facial contour.

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Citations

Apr 8, 2017·Aesthetic Surgery Journal·Mark NestorAndy Pickett
Apr 2, 2015·Dermatologic Surgery : Official Publication for American Society for Dermatologic Surgery [et Al.]·Mee Young Park, Ki Young Ahn
Nov 9, 2017·Aesthetic Surgery Journal·Gunwoo ParkSeong-Taek Kim
Dec 1, 2017·Dermatologic Surgery : Official Publication for American Society for Dermatologic Surgery [et Al.]·Mark S NestorAndy Pickett
Apr 18, 2021·Journal of Cosmetic Dermatology·George KroumpouzosMohamad Goldust

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