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Study identifier: NCT06075134 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

EMG-guided Botox Injection Versus Conventional Botox Injection in Gummy Smile Patients

Condition: Excessive Gingival Display  ·  Sponsor: Cairo University

PhaseNA
Planned participants32
Who can joinAll sexes, 18 Years to 50 Years
Healthy volunteersYes

About this study

The goal of this clinical trial is to compare the effect of EMG-guided Botox injection with conventional Botox injection in Yonsei point, in patients with excessive gingival display. The main question it aims to answer is: • Does the use of electromyography (EMG) as a guide during Botox injection for patients with gummy smile has better effect than conventional injection in Yonsei point? Participants will be randomized in equal proportions between intervention and control groups. * Preoperative assessment of amount of gingival display, lip length (philtrum and vermilion length), and smile type. * For the intervention group, EMG readings will be done in Clinical Neurophysiology Department, Kasr Al-Ainy Hospital EMG-guided Botox injection (Intervention group). Conventional Botox injection in Yonsei point (Control group).

This description comes directly from the study's public registry record.

Talk to the study team

Sherry Fayez Akhnokh, BSc  ·  +0201284857175  ·  sherry.akhnokh@dentistry.cu.edu.eg

Nesma Shemais, PhD  ·  nesma.shemais@dentistry.cu.edu.eg

Always discuss trial participation with your own doctor first.

Locations (1)

Faculty of Dentistry, Cairo UniversityCairo, EgyptRecruiting

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Source record: clinicaltrials.gov/study/NCT06075134