# Vertical Gingival Display Changes Associated With Upper Premolars Extraction

> **NCT04375540** · NA · COMPLETED · sponsor: **Jordan University of Science and Technology** · enrollment: 76 (actual)

## Conditions studied

- Gummy Smile
- Orthodontic Treatment

## Interventions

- **PROCEDURE:** Upper first premolars extractions
- **PROCEDURE:** Upper second premolars extraction

## Key facts

- **NCT ID:** NCT04375540
- **Lead sponsor:** Jordan University of Science and Technology
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2016-09-01
- **Primary completion:** 2018-12-01
- **Final completion:** 2018-12-01
- **Target enrollment:** 76 (ACTUAL)
- **Last updated:** 2020-05-07


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04375540

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04375540, "Vertical Gingival Display Changes Associated With Upper Premolars Extraction". Retrieved via AI Analytics 2026-06-01 from https://api.ai-analytics.org/clinical/NCT04375540. Licensed CC0.

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