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Yttrium Aluminum Garnet Laser (yttrium + aluminum_garnet_laser)

Distribution by Scientific Domains

Medical Sciences	75%

Selected Abstracts

Low-Fluence Q-Switched Neodymium-Doped Yttrium Aluminum Garnet Laser for Melasma with Pre- or Post-Treatment Triple Combination Cream

DERMATOLOGIC SURGERY, Issue 6 2010
SE-YEONG JEONG MD
BACKGROUND Topical triple combination (TC) treatment is considered the primary approach to melasma. Recently, collimated low-fluence 1,064-nm Q-switched neodymium-doped yttrium aluminum garnet (Nd:YAG) laser treatment has attracted attention as an alternative approach. OBJECTIVES To compare the clinical efficacy and adverse effects of low-fluence Q-switched Nd:YAG laser when performed before and after treatment with topical TC using a split-face crossover design. METHODS Thirteen patients with melasma received topical treatment with TC cream or 1,064-nm Q-switched Nd:YAG laser treatment on opposite sides of the face for 8 weeks, and then treatments were reversed for 8 weeks. Responses were evaluated using the Melasma Area and Severity Index scoring system, spectrophotometry measurements, and a subjective self-assessment method. RESULTS After 16 weeks, better results were seen in subjective assessments when laser treatment was used after 8 weeks of topical TC treatment than before usage of TC. There were no significant adverse effects with the laser treatments. CONCLUSIONS Laser treatment after topical TC cream was found to be safer and more effective than the post-treatment use of topical agents. The authors have indicated no significant interest with commercial supporters. [source]

Multiwavelength Laser Treatment of Venous Lakes

DERMATOLOGIC SURGERY, Issue 12 2009
MÓNICA RONCERO MD
BACKGROUND Venous lakes (VLs) are common benign ectasias in the upper dermis, usually observed in older people. Different treatment strategies have been described as useful, such as cryosurgery, excision, and various types of laser. OBJECTIVE We report our experiences using a multiwavelength laser, which has not been previously described. PATIENTS AND METHODS Thirty-nine VLs in 30 patients were treated. Treatment with 595-nm pulsed-dye laser was conducted at 20 ms and 10 J/cm2, followed by 1,064-nm neodymium-doped yttrium aluminum garnet laser at 20 ms and 70 J/cm2. RESULTS Complete resolution was observed in 38 lesions (95%). No complications after treatment were noted. One case developed a small scar. CONCLUSIONS Multiwavelentgh laser (595 nm; 1,064 nm) provides a safe, fast, and effective option in the treatment of VLs. [source]

Effect of Neodymium:Yttrium Aluminum Garnet Laser Irradiation on Crystallization in Li2O,Al2O3,SiO2 Glass

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, Issue 10 2001
Yong Su Lee
A 355-nm neodymium:yttrium aluminum garnet laser, produced by a harmonic generator, was used for the nucleation process in photosensitive glass containing Ag+ and Ce3+ ions. The pulse width and frequency of the laser were 8 ns and 10 Hz, respectively. Heat treatment was conducted at 570°C for 1 h, following laser irradiation, to produce crystalline growth, after which a LiAlSi3O8 crystal phase appeared in the laser-irradiated Li2O,Al2O3,SiO2 glass. The present study compares the effect of laser-induced nucleation on glass crystallization with that of spontaneous nucleation by heat treatment. [source]

Effect of a new infrared light device (1100,1800 nm) on facial lifting

PHOTODERMATOLOGY, PHOTOIMMUNOLOGY & PHOTOMEDICINE, Issue 1 2008
J. Y. Ahn
Summary Laser skin resurfacing procedures can be classed into two categories , invasive and non-invasive. The last several decades have witnessed a host of advancements in ablative laser therapy and other ablative modalities for the rejuvenation of skin, including the CO2 laser, the erbium : yttrium aluminum garnet laser, chemical peels, and dermabrasion. Despite the excellent results that can result from the practice of these techniques by experienced surgeons, the invasive nature of these devices is associated with inherent risks and patient discomfort. Therefore, much of the focus has been on non-ablative lasers and intense-pulsed light devices. We evaluated the efficacy and safety of treatment with the new infrared light device (1100,1800 nm), Titan, and assessed the degree of improvement associated with two-time laser treatments, as compared to one-time laser treatment. [source]