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Vitamin C for Gingival Depigmentation

NCT07513727 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 30

Last updated 2026-04-07

No results posted yet for this study

Summary

The purpose of this study is to evaluate the clinical and histopathological efficacy of topical vitamin C applications using three modalities (topical gel, microneedling , and mesotherapy) in gingival depigmentation. Assessment includes clinical evaluation, CIELAB analysis via DOPI, and histopathological examination (Fontana-Masson staining).

Conditions

  • Gingival Hyperpigmentation
  • Gingival Melanin Pigmentation

Interventions

DRUG

Topical Vitamin C ( control Arm)

Topical application of L-Ascorbic Acid gel (1000 mg in 5 ml distilled water with CMC and PEG), applied once daily on gingival hyperpigmented areas for 1 month.

PROCEDURE

Vitamin C mesotherapy

vitamin C mesotherapy was administered by delivering intra-mucosal microinjections of L-ascorbic acid into pigmented gingival tissues at the epithelium-connective tissue junction, providing targeted delivery to melanocyte-rich layers. . The treatment will be repeated 3 times with 1 week .

PROCEDURE

Microneedling technique

Gingival microneedling was performed using a Derma Pen A6 (12-needle row), with penetration depth adjusted to gingival thickness at 700 cycles/min (mode 6). Each gingival side was treated 30-40 seconds per tooth until bleeding points appeared.

Sponsors & Collaborators

  • Al-Azhar University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
20 Years
Max Age
40 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-07-29
Primary Completion
2026-05-01
Completion
2026-05-01

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07513727 on ClinicalTrials.gov