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Sub ablation effects of the KTP laser on wound healing
Author(s) -
Kyzer Michael D.,
Aly Al S.,
Davidson Jeffrey M.,
Reinisch Lou,
Ossoff Robert H.
Publication year - 1993
Publication title -
lasers in surgery and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 112
eISSN - 1096-9101
pISSN - 0196-8092
DOI - 10.1002/lsm.1900130112
Subject(s) - ablation , wound healing , laser ablation , medicine , laser , surgery , biomedical engineering , optics , physics
The KTP laser (wavelength 532 nm) was used in a sub ablative format to determine the effect of low energy density irradiation on the normal healing by primary intention of scalpel skin incisions in rats. Two longitudinal lased strips were created by a 1 cm diameter defocused beam on the shaved, cleaned dorsal epidermis of 32 Sprague‐Dawley rates; one strip was produced with a 2.0 W beam (54 J, or 18 J/cm 2 total dose), and the other with a 3.5 W beam (94.5 J or 31.5 J/cm 2 , total dose). Scalpel incisions were made longitudinally within the irradiated zones, using contra lateral scalpel incisions on unirradiated skin as controls. Tensio‐metric analysis of wound strength was performed at 3, 7, 14, and 23 days following surgery. The data from fresh tissue tensiometry indicate that KTP laser irradiation of skin incisions results in a lower tensile strength for the wound at 7 and 14 days. The decrease in tensile strength is proportional to the total energy density of the exposure. At days 3 and 23, the tensile strength of the wound was independent of the sub ablative laser exposure. The results are in general agreement with studies of the healing process of laser incisions and may help us to understand the details of the healing process from laser incisions. © 1993 Wiley‐Liss, Inc.