Resumo

MORDON, S.  e  TRELLES, M.A.. Advantages of laser assisted scar healing (LASH). Cir. plást. iberolatinoam. [online]. 2011, vol.37, n.4, pp.387-392. ISSN 1989-2055.  https://dx.doi.org/10.4321/S0376-78922011000400012.

Suture is the final stage of surgery and as a consequence, a scar is frequently the only visible effect after an operation. LASH technique (Laser Assisted Scar Healing) produces thermal effects to stimulate mechanisms for tissue repair that will determine the quality of the scar. In the experimental phase, rats were irradiated with 810 nm diode-laser after surgical wounds were sutured, and then, compared to another group of rats with the same type of wounds which were sutured with conventional techniques. The results were that those rats treated with laser had less visible scars. Histology comparatively confirmed a notable acceleration in the scarring process with modification of the TGFβ (Transforming Growth Factor-Beta), which is directly involved in tissue repair in those rats treated with laser. The tensiometric analysis also demonstrated a better resistance to mechanical stress of wounds. Clinically, in dermolipectomy patients, breast reductions and facial lifts, in which part of the sutures were treated with LASH, at 8 days, 3 months and 1 year controls, evaluated by independent surgeons to the study and by patients, statistical results were more favourable for patients treated with LASH technique. The effective doses determined for treatment were laser fluencies between 80 and 120 J/cm². LASH is a fast, simple to carry out and reproducible method, with clear evidence that it is possible to considerably reduce scars, giving them a better quality and aesthetic appearance.

Palavras-chave : Scar; Laser; Assisted wound healing; LASH.

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