GaAlAs (830 nm) LOW LEVEL LASER THERAPY OF ACUTE INFLAMMATION INDUCED BY HIGH REACTIVE LEVEL LASER TREATMENT

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Various biological effects including anti-inflammatory response following low reactive level laser therapy (LLLT) have been described in different studies. The purpose of this study was to evaluate the anti-inflammatory effect of LLLT using 60 mW GaAlAs (830 nm) laser on damaged tissue induced by high reactive level laser treatment (HLLT). Two acquired pigmented nevi of a single person’s face were treated with high reactive level lasers (Ultra Pulse CO₂ laser and Q-switched Alexandrite laser). After high reactive level lasers irradiation, one acquired pigmented nevus was exposed to 60 mW GaAlAs laser irradiation, whereas the other nevus was not irradiated and served as control. Both nevi were evaluated with digital photographs, thermography and a questionnaire survey. Compared to the nonirradiated control nevus, LLLT decreased the rubor and calor of the acute inflammation caused by HLLT. LLLT immediately after HLLT (Xenogeneous combined laser treatment) seems to be useful to control acute inflammation caused by HLLT.