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Article: An In vivo Trial Comparing the Use of Different Types of 532 nm Nd:YAG Lasers in the Treatment of Facial Lentigines in Oriental Patients

TitleAn In vivo Trial Comparing the Use of Different Types of 532 nm Nd:YAG Lasers in the Treatment of Facial Lentigines in Oriental Patients
Authors
Issue Date2000
PublisherBlackwell Publishing, Inc.
Citation
Dermatologic Surgery, 2000, v. 26 n. 8, p. 743-749 How to Cite?
AbstractBackground. Versapulse is a system that consists of four laser modalities and was developed with the aim of increasing cost-effectiveness. However, as these lasers share a common power supply, for the Q-switched (QS) Nd:YAG 532 nm laser a large spot diameter is necessary to lower the fluence to a suitable level. This can increase the risk of hyperpigmentation when used for the treatment of lentigines in dark-skinned patients. Objective. The aim of our study was to access the clinical efficacy and the complication rate of the Versapulse QS Nd:YAG 532 nm laser, the Versapulse long-pulsed Nd:YAG 532 nm laser (without the chill tip), and a conventional QS Nd:YAG 532 nm laser in the treatment of lentigines in Chinese patients. Methods. Thirty-four Chinese patients with lentigines were randomized to receive laser surgery, with one side of the face treated by one laser and the other side treated by a different system. Patients were monitored for 6 weeks to assess the degree of clearing, hyperpigmentation, hypopigmentation, and erythema. Assessments involved patients interviewed using a visual analog questionnaire and two blinded observers who evaluated the pre- and posttreatment clinical photographs. Results. The Versapulse QS Nd:YAG 532 nm laser was associated with a statistically higher risk of complications. The Versapulse long-pulsed Nd:YAG 532 nm laser was compatible with the conventional QS Nd:YAG 532 nm laser in terms of clinical efficacy and complication rates. Conclusion. The Versapulse long-pulsed 532 nm laser is more effective and should be used instead of the Versapulse QS Nd:YAG 532 nm laser for the treatment of lentigines in dark-skinned patients.
Persistent Identifierhttp://hdl.handle.net/10722/222953
ISSN
2015 Impact Factor: 1.936
2015 SCImago Journal Rankings: 1.084

 

DC FieldValueLanguage
dc.contributor.authorChan, HH-
dc.contributor.authorFung, WKK-
dc.contributor.authorYing, SY-
dc.contributor.authorKono, T-
dc.date.accessioned2016-02-16T08:53:02Z-
dc.date.available2016-02-16T08:53:02Z-
dc.date.issued2000-
dc.identifier.citationDermatologic Surgery, 2000, v. 26 n. 8, p. 743-749-
dc.identifier.issn1076-0512-
dc.identifier.urihttp://hdl.handle.net/10722/222953-
dc.description.abstractBackground. Versapulse is a system that consists of four laser modalities and was developed with the aim of increasing cost-effectiveness. However, as these lasers share a common power supply, for the Q-switched (QS) Nd:YAG 532 nm laser a large spot diameter is necessary to lower the fluence to a suitable level. This can increase the risk of hyperpigmentation when used for the treatment of lentigines in dark-skinned patients. Objective. The aim of our study was to access the clinical efficacy and the complication rate of the Versapulse QS Nd:YAG 532 nm laser, the Versapulse long-pulsed Nd:YAG 532 nm laser (without the chill tip), and a conventional QS Nd:YAG 532 nm laser in the treatment of lentigines in Chinese patients. Methods. Thirty-four Chinese patients with lentigines were randomized to receive laser surgery, with one side of the face treated by one laser and the other side treated by a different system. Patients were monitored for 6 weeks to assess the degree of clearing, hyperpigmentation, hypopigmentation, and erythema. Assessments involved patients interviewed using a visual analog questionnaire and two blinded observers who evaluated the pre- and posttreatment clinical photographs. Results. The Versapulse QS Nd:YAG 532 nm laser was associated with a statistically higher risk of complications. The Versapulse long-pulsed Nd:YAG 532 nm laser was compatible with the conventional QS Nd:YAG 532 nm laser in terms of clinical efficacy and complication rates. Conclusion. The Versapulse long-pulsed 532 nm laser is more effective and should be used instead of the Versapulse QS Nd:YAG 532 nm laser for the treatment of lentigines in dark-skinned patients.-
dc.languageeng-
dc.publisherBlackwell Publishing, Inc.-
dc.relation.ispartofDermatologic Surgery-
dc.rightsThe definitive version is available at www.blackwell-synergy.com-
dc.subject.meshErythema - etiology-
dc.subject.meshFacial Dermatoses - pathology - surgery-
dc.subject.meshHypopigmentation - etiology-
dc.subject.meshLaser Therapy - adverse effects-
dc.subject.meshLentigo - pathology - surgery-
dc.titleAn In vivo Trial Comparing the Use of Different Types of 532 nm Nd:YAG Lasers in the Treatment of Facial Lentigines in Oriental Patients-
dc.typeArticle-
dc.identifier.emailChan, HH: hhlchan@hkucc.hku.hk-
dc.identifier.doi10.1046/j.1524-4725.2000.00039.x-
dc.identifier.pmid10940060-
dc.identifier.scopuseid_2-s2.0-0033853352-
dc.identifier.hkuros60594-
dc.identifier.volume26-
dc.identifier.issue8-
dc.identifier.spage743-
dc.identifier.epage749-
dc.publisher.placeUnited States-

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