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Conference Paper: Treatment of facial acne with 1450 nm diode laser in Asians

TitleTreatment of facial acne with 1450 nm diode laser in Asians
Authors
Issue Date2007
PublisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/34073
Citation
The 27th Annual Meeting of the American Society for Laser Medicine and Surgery (ASLMS 2007), Grapevine, TX., 11-15 April 2007. In Lasers in Surgery and Medicine, 2007, v. 39 suppl. 19, p. 23, abstract no. 69 How to Cite?
AbstractBACKGROUND AND OBJECTIVES: The 1450-nm diode laser has been shown to be effective for the treatment of inflammatory facial acne but there is significant risk of postlaser hyperpigmentation in Asian skin (up to 39%). This study is to determine the optimal laser and cooling parameters of the 1450-nm diode laser with dynamic cooling (DCD) that improve acne effectively with minimal post-inflammatory hyperpigmentation (PIH) in Asians. METHODS: Twenty-five patients (skin phototypes IV–V) with moderate inflammatory acne received 4 treatments using the 1450-nm diode laser with 6 mm spot size (3–4 week intervals). We used 3 passes with a fluence of 8 J/cm2 with DCD spray duration of 25 ms which was predetermined in a forearm study to minimize PIH. Acne lesion counts and sebum measurement were evaluated by blinded assessment before and after treatment. RESULTS: Mean reduction of inflammatory acne lesions was 19.9% from baseline 4 weeks after the last treatment. (P?0.02) Significant subjective and objective improvements of sebum production were noted. 2 episodes of PIH (4%) were observed out of all treatment sessions. CONCLUSIONS: It has been postulated that excessive cooling using DCD leads to the high risk of PIH in Asian. We found that use of multiple passes of 1450-nm diode laser with lower fluence and shorter DCD spray duration retains its therapeutic efficacy with substantial reduction of PIH.
DescriptionSession: Cutaneous laser surgery
This free journal suppl. entitled: Supplement: American Society for Laser Medicine and Surgery, Twenty-Seventh Annual Meeting, Grapevine, Texas, April 11–April 15, 2007
Persistent Identifierhttp://hdl.handle.net/10722/101173
ISSN
2015 Impact Factor: 2.135
2015 SCImago Journal Rankings: 0.977

 

DC FieldValueLanguage
dc.contributor.authorYeung, CKen_HK
dc.contributor.authorShek, SYNen_HK
dc.contributor.authorYu, CSen_HK
dc.contributor.authorChan, HHLen_HK
dc.date.accessioned2010-09-25T19:38:52Z-
dc.date.available2010-09-25T19:38:52Z-
dc.date.issued2007en_HK
dc.identifier.citationThe 27th Annual Meeting of the American Society for Laser Medicine and Surgery (ASLMS 2007), Grapevine, TX., 11-15 April 2007. In Lasers in Surgery and Medicine, 2007, v. 39 suppl. 19, p. 23, abstract no. 69en_HK
dc.identifier.issn0196-8092en_HK
dc.identifier.urihttp://hdl.handle.net/10722/101173-
dc.descriptionSession: Cutaneous laser surgery-
dc.descriptionThis free journal suppl. entitled: Supplement: American Society for Laser Medicine and Surgery, Twenty-Seventh Annual Meeting, Grapevine, Texas, April 11–April 15, 2007-
dc.description.abstractBACKGROUND AND OBJECTIVES: The 1450-nm diode laser has been shown to be effective for the treatment of inflammatory facial acne but there is significant risk of postlaser hyperpigmentation in Asian skin (up to 39%). This study is to determine the optimal laser and cooling parameters of the 1450-nm diode laser with dynamic cooling (DCD) that improve acne effectively with minimal post-inflammatory hyperpigmentation (PIH) in Asians. METHODS: Twenty-five patients (skin phototypes IV–V) with moderate inflammatory acne received 4 treatments using the 1450-nm diode laser with 6 mm spot size (3–4 week intervals). We used 3 passes with a fluence of 8 J/cm2 with DCD spray duration of 25 ms which was predetermined in a forearm study to minimize PIH. Acne lesion counts and sebum measurement were evaluated by blinded assessment before and after treatment. RESULTS: Mean reduction of inflammatory acne lesions was 19.9% from baseline 4 weeks after the last treatment. (P?0.02) Significant subjective and objective improvements of sebum production were noted. 2 episodes of PIH (4%) were observed out of all treatment sessions. CONCLUSIONS: It has been postulated that excessive cooling using DCD leads to the high risk of PIH in Asian. We found that use of multiple passes of 1450-nm diode laser with lower fluence and shorter DCD spray duration retains its therapeutic efficacy with substantial reduction of PIH.-
dc.languageengen_HK
dc.publisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/34073en_HK
dc.relation.ispartofLasers in Surgery and Medicineen_HK
dc.rightsLasers in Surgery and Medicine. Copyright © John Wiley & Sons, Inc.en_HK
dc.titleTreatment of facial acne with 1450 nm diode laser in Asiansen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0196-8092&volume=S19&spage=69&epage=&date=2007&atitle=Treatment+of+facial+acne+with+1450nm+diode+laser+in+Asians.en_HK
dc.identifier.emailYeung, CK: yk890901@netvigator.comen_HK
dc.identifier.emailShek, SYN: samantha.shek@gmail.comen_HK
dc.identifier.emailYu, CS: carolsyu@hku.hken_HK
dc.identifier.emailChan, HHL: hhlchan@hkucc.hku.hken_HK
dc.identifier.authorityYu, CS=rp00305en_HK
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1002/lsm.20496-
dc.identifier.hkuros138188en_HK
dc.identifier.volume39en_HK
dc.identifier.issuesuppl. 19-
dc.identifier.spage23, abstract no. 69en_HK
dc.identifier.epage23, abstract no. 69-

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