Publication: Effect of pulse width of a variable square pulse (VSP) erbium:YAG laser on the treatment outcome of periorbital wrinkles in Asians
Issued Date
2010-02-01
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ISSN
13654632
00119059
00119059
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2-s2.0-74949106455
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Mahidol University
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SCOPUS
Bibliographic Citation
International Journal of Dermatology. Vol.49, No.2 (2010), 200-206
Suggested Citation
Woraphong Manuskiatti, Sujittra Siriphukpong, Supenya Varothai, Rungsima Wanitphakdeedecha, Richard E. Fitzpatrick Effect of pulse width of a variable square pulse (VSP) erbium:YAG laser on the treatment outcome of periorbital wrinkles in Asians. International Journal of Dermatology. Vol.49, No.2 (2010), 200-206. doi:10.1111/j.1365-4632.2009.04292.x Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/29781
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Title
Effect of pulse width of a variable square pulse (VSP) erbium:YAG laser on the treatment outcome of periorbital wrinkles in Asians
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Abstract
Background: Uses of appropriate laser parameters are essential for an optimum outcome with minimal risks of complications. Objective: To evaluate the effect of pulse width of a variable square pulse (VSP) Er:YAG laser on the treatment outcome. Methods: Twenty-four Thais with periorbital wrinkles received two treatments with a low-fluence, VSP Er:YAG laser resurfacing 1 month apart. Subjects were randomly divided into two groups and treated with two different parameters including a pulse width of 0.3 ms (short pulse, SP) for one group and a pulse width of 250 ms (super-long pulse, SL) for the other group. Assessments were evaluated at baseline, 1-month and 3-month follow-up visits. Results: After one treatment, 63.7% and 33.4% of the subjects in the SP and SL groups, respectively, were assessed to have obvious to marked improvement of their wrinkles. After two treatments, a higher percentage of the subjects were rated to have obvious to marked improvement including 91% and 66.7% in the SP and SL groups, respectively. There was no significant difference in therapeutic outcome between the SP and SL groups. Conclusions: There was no significant difference in efficacy and side effects, between the SP and SL groups. However, a trend toward better response with the shorter pulse width was observed. © 2010 The International Society of Dermatology.