# Effect of Clinical Crown Lengthening Surgery and Botulinum Toxin A Injection in Gummy Smile Treatment

> **NCT05057286** · PHASE4 · COMPLETED · sponsor: **University of Medicine and Pharmacy at Ho Chi Minh City** · enrollment: 20 (actual)

## Conditions studied

- Gummy Smile

## Interventions

- **PROCEDURE:** Clinical crown lengthening surgery

## Key facts

- **NCT ID:** NCT05057286
- **Lead sponsor:** University of Medicine and Pharmacy at Ho Chi Minh City
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2020-08-01
- **Primary completion:** 2021-05-31
- **Final completion:** 2021-05-31
- **Target enrollment:** 20 (ACTUAL)
- **Last updated:** 2021-09-27


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05057286

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05057286, "Effect of Clinical Crown Lengthening Surgery and Botulinum Toxin A Injection in Gummy Smile Treatment". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT05057286. Licensed CC0.

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