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dc.contributor.authorJoensen, Jonen_US
dc.contributor.authorDemmink, Jan Hendriken_US
dc.contributor.authorJohnson, Mark I.en_US
dc.contributor.authorIversen, Vegard Vereideen_US
dc.contributor.authorLopes-Martins, Rodrigo Álvaro Brandãoen_US
dc.contributor.authorBjordal, Jan Magnusen_US
dc.date.accessioned2013-10-30T13:17:10Z
dc.date.available2013-10-30T13:17:10Z
dc.date.issued2011-03-06eng
dc.PublishedPhotomedicine and Laser Surgery 29(3): 145-153eng
dc.identifier.issn1549-5418
dc.identifier.urihttps://hdl.handle.net/1956/7459
dc.descriptionThis is a copy of an article published in the Photomedicine and Laser Surgery © 2011 copyright Mary Ann Liebert, Inc.; Photomedicine and Laser Surgery is available online at: http://online.liebertpub.comeng
dc.description.abstractObjective: To investigate the effect of therapeutic infrared class 3B laser irradiation on skin temperature in healthy participants of differing skin color, age, and gender. Background: Little is known about the potential thermal effects of Low Level Laser Therapy (LLLT) irradiation on human skin. Methods: Skin temperature was measured in 40 healthy volunteers with a thermographic camera at laser irradiated and control (non-irradiated) areas on the skin. Six irradiation doses (2–12 J) were delivered from a 200mW, 810nm laser and a 60mW, 904nm laser, respectively. Results: Thermal effects of therapeutic LLLT using doses recommended in the World Association for Laser Therapy (WALT) guidelines were insignificant; below 1.58C in light, medium, and dark skin. When higher irradiation doses were used, the 60mW, 904 nm laser produced significantly (p<0.01) higher temperatures in dark skin (5.7, SD 1.88C at 12 J) than in light skin, although no participants requested termination of LLLT. However, irradiation with a 200mW, 810nm laser induced three to six times more heat in dark skin than in the other skin color groups. Eight of 13 participants with dark skin asked for LLLT to be stopped because of uncomfortable heating. The maximal increase in skin temperature was 22.38C. Conclusions: The thermal effects of LLLT at doses recommended by WALT-guidelines for musculoskeletal and inflammatory conditions are negligible (<1.58C) in light, medium, and dark skin. However, higher LLLT doses delivered with a strong 3B laser (200mW) are capable of increasing skin temperature significantly and these photothermal effects may exceed the thermal pain threshold for humans with dark skin color.en_US
dc.language.isoengeng
dc.publisherMary Ann Lieberteng
dc.relation.ispartof<a href="http://hdl.handle.net/1956/7461" target="blank">Biophysical and biological effects from infrared Low-Level-Laser-Therapy</a>eng
dc.titleThe Thermal Effects of Therapeutic Lasers with 810 and 904nm Wavelengths on Human Skinen_US
dc.typePeer reviewed
dc.typeJournal article
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright Mary Ann Liebert, Inc.
dc.identifier.doihttps://doi.org/10.1089/pho.2010.2793
dc.identifier.cristin627130
dc.source.journalPhotomedicine and Laser Surgery
dc.source.4029
dc.source.143
dc.source.pagenumber145-153


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