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Q-switched ruby laser is safe and effective in treating primary gingival hyperpigmentation.

Yehonatan Noyman^1,2, Yoram Kornowski³, Dan Slodownik^2,4

¹Laser Unit, Division of Dermatology, Rabin Medical Center, Petah Tikva, Israel.

Journal of Cosmetic Dermatology

|May 5, 2023

Summary

The 694-nm Q-switched ruby laser (QSRL) effectively treats physiologic gingival hyperpigmentation (PGH) without ablation. This non-ablative laser offers a safe and promising option for PGH depigmentation with no reported re-pigmentation.

Keywords:

Q-switched ruby laser QSRL depigmentation gingival hyperpigmentation

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Area of Science:

Dermatology
Laser Medicine
Oral Medicine

Background:

Physiologic gingival hyperpigmentation (PGH) is a common, benign condition caused by increased melanin in darker-skinned individuals.
Current laser treatments for PGH are often ablative, leading to non-selective tissue damage.

Purpose of the Study:

To evaluate the efficacy and safety of a non-ablative 694-nm Q-switched ruby laser (QSRL) for PGH depigmentation.

Main Methods:

A retrospective, single-center study was conducted.
Four patients diagnosed with PGH were treated with QSRL between March 2019 and November 2020.

Main Results:

Complete depigmentation was achieved in all patients after 1-3 QSRL sessions.
The average follow-up was 11 months, with no instances of re-pigmentation.
Two patients experienced mild local tenderness and transient erosions.

Conclusions:

The 694-nm QSRL is a novel, safe, and effective non-ablative treatment for PGH.
This modality minimizes tissue damage and optimizes treatment outcomes for PGH.