Effects of near‐infrared laser exposure in a cellular model of wound healing

Background: Clinical studies have demonstrated beneficial outcomes for low‐level laser therapy (LLLT) using near‐infrared (NIR) wavelengths. It has been hypothesized that the benefits of NIR LLLT are due in part to the thermal effects of NIR exposure. However, it is not clear whether photochemical interactions between NIR light and superficial tissues contribute to beneficial outcomes. To investigate the photochemical effects of NIR exposure, the efficacy of 980 nm NIR LLLT on human fibroblast growth rates is investigated using an in vitro model of wound healing.

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