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Abstract

Objective:

The aim of the present study was to investigate the clinical treatment effect on oral venous lakes (OVL) treated with neodymium-doped yttrium aluminum garnet (Nd:YAG) laser or a combination of erbium-yttrium aluminum garnet (Er:YAG) laser.

Patients and methods:

Between June 2015 and March 2017, nine patients, suffering from OVL in the mandibular regions, were treated with Nd:YAG laser or combination of Nd:YAG laser and Er:YAG laser in our department. The Nd:YAG laser was mainly performed for the treatment of nine initial lesions. The preset parameters were as follows: average power of 5 W, frequency of 100 Hz, microshort pulse (MSP), tip size of 300 μm, spot size of 3 mm, irradiation distance of 3–4 mm, and speed of 1–2 mm/sec, sequential treatment. The power density at work was 57 W/cm². If postoperative scars occurred after the Nd:YAG treatment, the Er:YAG laser was used. The parameters were set as follows: power of 3.75 W, energy of 150 mJ, frequency of 25 Hz, very long pulse (VLP), tip size of 0.6 mm, 40% water, and 60% gas. The patients were followed up for 4–8 weeks. The therapeutic results were graded on a 4-point scale system. Adverse effects after laser treatment were evaluated and managed accordingly.

Results:

With single Nd:YAG laser, the therapeutic outcome was excellent in seven patients (77.8%) and good in two patients (22.2%). Scar tissue was encountered in two patients 2 weeks after Nd:YAG laser therapy, and then Er:YAG laser was used for the scar removal. No mucosal necrosis was found in any of the patients.

Conclusions:

The Nd:YAG laser or combined with Er:YAG laser was an effective and safe treatment for patients with OVL in the mandibular region.

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