Completed PHASE3 INTERVENTIONAL 2-arm NCT03717987

The Effect of Botulinum Toxin A In Patients With Excessive Gingival Display With And Without Zinc Supplementation

Sponsor: Cairo University

Interventions Botulinum toxin type A Zinc supplementation

Updated 6 times since 2018 Last updated: May 14, 2022 Started: Jan 3, 2019 Primary completion: Sep 1, 2019 Completion: Dec 12, 2019

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

This PHASE3 trial investigates Excessive Gingival Display and is currently completed. Cairo University leads this study, which shows 6 recorded versions since 2019 — indicating limited longitudinal coverage. The change history captured here reflects the iterative nature of clinical trial conduct.

Status Flow

Change History

6 versions recorded

Sep 2024 — Present [monthly]

Completed PHASE3
Jul 2024 — Sep 2024 [monthly]

Completed PHASE3
Jun 2022 — Jul 2024 [monthly]

Completed PHASE3

Status: Unknown Status → Completed
Nov 2021 — Jun 2022 [monthly]

Unknown Status PHASE3

Status: Not Yet Recruiting → Unknown Status
Jan 2021 — Nov 2021 [monthly]

Not Yet Recruiting PHASE3

▶ Show 1 earlier version

Nov 2018 — Jan 2021 [monthly]

Not Yet Recruiting PHASE3

First recorded

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Cairo University

Data source: Cairo University

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

• Cairo, Egypt