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Conference Paper: Treatment of facial acne with 1450 nm diode laser in Asians
Title | Treatment of facial acne with 1450 nm diode laser in Asians |
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Authors | |
Issue Date | 2007 |
Publisher | John 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? |
Abstract | BACKGROUND 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. |
Description | Session: 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 Identifier | http://hdl.handle.net/10722/101173 |
ISSN | 2023 Impact Factor: 2.2 2023 SCImago Journal Rankings: 0.810 |
DC Field | Value | Language |
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dc.contributor.author | Yeung, CK | en_HK |
dc.contributor.author | Shek, SYN | en_HK |
dc.contributor.author | Yu, CS | en_HK |
dc.contributor.author | Chan, HHL | en_HK |
dc.date.accessioned | 2010-09-25T19:38:52Z | - |
dc.date.available | 2010-09-25T19:38:52Z | - |
dc.date.issued | 2007 | en_HK |
dc.identifier.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 | en_HK |
dc.identifier.issn | 0196-8092 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/101173 | - |
dc.description | Session: Cutaneous laser surgery | - |
dc.description | This 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.abstract | BACKGROUND 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.language | eng | en_HK |
dc.publisher | John Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/34073 | en_HK |
dc.relation.ispartof | Lasers in Surgery and Medicine | en_HK |
dc.rights | Lasers in Surgery and Medicine. Copyright © John Wiley & Sons, Inc. | en_HK |
dc.title | Treatment of facial acne with 1450 nm diode laser in Asians | en_HK |
dc.type | Conference_Paper | en_HK |
dc.identifier.openurl | http://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.email | Yeung, CK: yk890901@netvigator.com | en_HK |
dc.identifier.email | Shek, SYN: samantha.shek@gmail.com | en_HK |
dc.identifier.email | Yu, CS: carolsyu@hku.hk | en_HK |
dc.identifier.email | Chan, HHL: hhlchan@hkucc.hku.hk | en_HK |
dc.identifier.authority | Yu, CS=rp00305 | en_HK |
dc.description.nature | link_to_OA_fulltext | - |
dc.identifier.doi | 10.1002/lsm.20496 | - |
dc.identifier.hkuros | 138188 | en_HK |
dc.identifier.volume | 39 | en_HK |
dc.identifier.issue | suppl. 19 | - |
dc.identifier.spage | 23, abstract no. 69 | en_HK |
dc.identifier.epage | 23, abstract no. 69 | - |
dc.identifier.issnl | 0196-8092 | - |