# Application of Botulinum Toxin at the Yonsei Point for the Treatment of Gummy Smile

> **NCT04527744** · NA · COMPLETED · sponsor: **Peking University** · enrollment: 48 (actual)

## Conditions studied

- Smiling
- Botulinum Toxins, Type A

## Interventions

- **PROCEDURE:** the injection of onabotulinumtoxinA at different point

## Key facts

- **NCT ID:** NCT04527744
- **Lead sponsor:** Peking University
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2020-10-17
- **Primary completion:** 2020-11-17
- **Final completion:** 2021-10-17
- **Target enrollment:** 48 (ACTUAL)
- **Last updated:** 2021-11-16


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04527744

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04527744, "Application of Botulinum Toxin at the Yonsei Point for the Treatment of Gummy Smile". Retrieved via AI Analytics 2026-05-25 from https://api.ai-analytics.org/clinical/NCT04527744. Licensed CC0.

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