CLINICAL RESEARCH Versatility of botulinum toxin at the Yonsei point for the treatment of gummy smile Hessa Al Wayli, BDS, MSc Consultant, Department of Oral Medicine, Ministry of Health, Dental Directorate, Al-Roda, Riyadh, Saudi Arabia Correspondence to: Dr Hessa Al Wayli Consultant, Department of Oral Medicine, Dental Administration Riyadh Health, Ministry of Health, Dental Directorate, Al-Roda, Riyadh, Saudi Arabia 13215; Tel: +966 505445212; Email:
[email protected],
[email protected] 86 | The International Journal of Esthetic Dentistry | Volume 14 | Number 1 | Spring 2019 AL WAYLI Abstract assessed at 2, 12, 24, and 36 weeks postinjection. The data were evaluated using mean standard de- The purpose of the present study was to evaluate viation, analysis of variance (ANOVA), and Tukey’s the efficacy of a single dose of botulinum toxin post hoc test. The results of the study revealed that (BTX) at the Yonsei point for the treatment of gum- a single dose of BTX-A injected at the Yonsei point my smile (GS). A total number of 45 female patients was effective in the treatment of GS P( < 0.05) and were enrolled in the study at a private clinic over a achieved better results than multiple injections at period of 24 months. Three units of onabotulinum- various sites. toxinA (BTX-A) per site (90 hemifacies) were initially injected at the Yonsei point. The patients were then (Int J Esthet Dent 2019;14:86–95) The International Journal of Esthetic Dentistry | Volume 14 | Number 1 | Spring 2019 | 87 CLINICAL RESEARCH Introduction frequently recommended. In contrast, the use of BTX represents a simple, fast, and ef- Gummy smile (GS) is a well-known condition.