Effects of diode laser therapy on the acellular dermal matrix.

Cell Tissue Bank

Department of Oralmaxillofacial Surgery, PUCRS School of Dentistry, Porto Alegre, Rio Grande do Sul, Brazil.

Published: November 2009

Acellular dermal matrix (ADM) was subcutaneously implanted into calvarian skin of male Wistar rats (n = 40). Low-level laser (lambda 685 nm, 4 J/cm(2)) was locally applied in experimental group (n = 20) above the skin flap. Grafts were harvested at 1, 3, 7 and 14 days after surgery and underwent histological analyses. In treated animals, the extent of edema and the number of inflammatory cells were reduced (P < 0.05). The amount of collagen in graft treated with low-level laser were significantly higher than those of controls (P < 0.05) and were statistically more prominent on the 14th day after surgery. The mean count of fibroblasts was significantly higher in the low-laser therapy group within the 3rd day, showing a marked influx of fibroblasts into area. In conclusion, wound healing of the ADM appear to be positively affected by laser therapy.

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http://dx.doi.org/10.1007/s10561-009-9135-2DOI Listing

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