Evaluation of effectiveness of erbium:yttrium-aluminum-garnet laser on atrophic facial acne scars with 22-MHz digital ultrasonography in a Turkish population.
Summary of "Evaluation of effectiveness of erbium:yttrium-aluminum-garnet laser on atrophic facial acne scars with 22-MHz digital ultrasonography in a Turkish population."
Scar formation due to acne is a common problem among the young population and significantly affects their quality of life. The aim of this study was to evaluate the efficacy of erbium:yttrium-aluminum-garnet (Er:YAG) laser resurfacing for acne scars and to objectively demonstrate the altering of collagen density in the dermis by 22-MHz digital ultrasonography. Twenty-one patients, aged 19-55 years, with facial acne scars were treated with Er:YAG laser. The results of the laser resurfacing were evaluated for the degree of clinical improvement, alteration of the collagen density by 22-MHz digital ultrasonography and any adverse effects at 3 months. At 3 months after the treatment, good (in 12 patients) and near total (in four patients) clinical improvement was noted in most of the patients compared to baseline. Overall treatment results were 76% (both near total and good) in 16 patients. By ultrasonographic evaluation, the average density of dermal collagen (total density/number of patients) of 21 patients was 32.714 (right cheek) and 32.142 (left cheek) before laser facial resurfacing. At the third month after treatment, the average density of dermal collagen of 21 patients was 36.380 (right cheek) and 38.809 (left cheek). In conclusion, Er:YAG laser skin resurfacing was found to be a safe and effective treatment modality for treatment of atrophic facial acne scars. As public demand grows for less invasive modalities to approach clinical diagnosis and evaluation, digital ultrasonography seems to provide an easy and confidential method for collagen density evaluation.
Department of Dermatology and Venereology, Cerrahpaşa Medical Faculty, Istanbul University, Istanbul, Turkey.
This article was published in the following journal.
Name: The Journal of dermatology
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22973994
- DOI: http://dx.doi.org/10.1111/j.1346-8138.2012.01649.x
Medical and Biotech [MESH] Definitions
An element of the rare earth family of metals. It has the atomic symbol Y, atomic number 39, and atomic weight 88.91. In conjunction with other rare earths, yttrium is used as a phosphor in television receivers and is a component of the yttrium-aluminum garnet (YAG) lasers.
Lasers which use a solid, as opposed to a liquid or gas, as the lasing medium. Common materials used are crystals, such as YAG (YTTRIUM aluminum garnet); alexandrite; and CORUNDUM, doped with a rare earth element such as a NEODYMIUM; ERBIUM; or HOLMIUM. The output is sometimes additionally modified by addition of non-linear optical materials such as potassium titanyl phosphate crystal, which for example is used with neodymium YAG lasers to convert the output light to the visible range.
Stable yttrium atoms that have the same atomic number as the element yttrium, but differ in atomic weight. Y-89 is the only naturally occurring stable isotope of yttrium.
Unstable isotopes of yttrium that decay or disintegrate emitting radiation. Y atoms with atomic weights 82-88 and 90-96 are radioactive yttrium isotopes.
Studies designed to assess the efficacy of programs. They may include the evaluation of cost-effectiveness, the extent to which objectives are met, or impact.
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