Laser-Assisted Gingival Depigmentation
Hyperpigmentation; Melanin, Laser-Induced Hyperpigmentation
About this trial
This is an interventional treatment trial for Hyperpigmentation; Melanin focused on measuring Depigmentation, Gingival Hyperpigmentation, Diode laser, Er,Cr:YSGG laser, Repigmentation
Eligibility Criteria
Inclusion Criteria:
• All patient exhibiting physiologic pigmentation of score2 or more according to Oral pigmentation index (DOPI)
Exclusion Criteria:
- Pathologic hyperpigmentation
- Participants with a systemic condition that could affect tissue healing (e. g., autoimmune diseases)
- Pregnancy and lactation
- History of smoking
- Previous mucogingival surgery at the region to be treated
- No contraindication for the laser treatment.
Sites / Locations
- Dr. Tamim Dental Polyclinic
Arms of the Study
Arm 1
Arm 2
Experimental
Experimental
Er,Cr:YSGG laser 2780 nm
Diode laser 940 nm
Group A was treated by an Er,Cr:YSGG laser 2780 nm cylindrical tip (tip 600 μm, 45 millijoule /pulse, average power 2.25 W, frequency 50 Hz, pulse duration 60 µs, energy density 43 J/cm2, water 50%, and air 40%). The procedure was performed completely without anesthesia with the laser tip at angulation ~30° and distance of ~1 mm from the gingival tissue. The laser tip was advancing in scanning movement from in the cervical-apical direction in all pigmented areas. The following settings was used to achieve hemostasis in case of the bleeding was present (tip 600 μm, 30 millijoule /pulse, average power 1.5 W, frequency 50 Hz, pulse duration 700 µs, energy density 28.7 J/cm2, water 10%, and air 20%).
Group B was treated with diode 940 nm Laser. The procedure was performed with a pencil-sized handpiece containing a 400 µm lasing fiber (400 μm initiated tip, average power 0.8 watts, Pulsed mode, Duty cycle 20%, Pulse duration 10 μs, energy density 636.9 J/cm2 per second, no water or air). Infiltration anesthesia was injected for B group . The laser tip was placed in angle ~30° with the gingival surface. Short light paint brush strokes were used in the cervical-apical direction in all pigmented areas.