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erbium laser

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https://www.readbyqxmd.com/read/28806426/comparative-evaluation-of-the-effect-of-laser-etching-on-the-shear-bond-strength-of-crowns-cemented-with-two-different-luting-agents-an-in-vitro-study
#1
Ankur Dahiya, Paresh Gandhi, Nadim Z Baba
PURPOSE: The aim of this study was to compare the shear bond strength of crowns cemented on natural teeth after surface treatment of the enamel with an erbium-doped yttrium aluminum garnet (Er:YAG) laser. MATERIALS AND METHODS: Crown preparation was done for 40 full-metal crowns, and wax patterns with loops were cast in a cobalt-chromium alloy. The Er:YAG laser was used for surface treatment of some teeth, and teeth without surface treatment acted as the control...
August 14, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28803363/evaluation-of-nonablative-fractional-laser-treatment-in-scar-reduction
#2
Hilal Gokalp
Fractional lasers have been used for the improvement of scar tissue in the recent years but there has not been extensive research on their impact. The purpose of this study was to evaluate the efficacy of nonablative fractional laser (NAFL) on acne, burn, and surgery/traumatic scar. The scars were also categorized as atrophic, hypertrophic, and keloid, and treatment efficacy was investigated accordingly. This is a retrospective, single-center study. Scar tissues were treated using a nonablative fractional 1550-nm Erbium glass laser in high-energy parameters at 4-week interval for 4-8 sessions...
August 12, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28799650/facial-microcirculatory-and-biomechanical-skin-properties-after-single-high-energy-er-yag-laser-application
#3
Fabian Medved, Antonia Wurm, Manuel Held
OBJECTIVE: Owing to skin aging and the growing demand for skin rejuvenation, minimal invasive aesthetic treatments such as laser procedures are increasingly coming into focus. However, until now, little has been known about the objective effects of these procedures with respect to skin microcirculation or changes in skin elasticity. STUDY DESIGN: Facial skin rejuvenation was performed on 32 volunteers using ablative Erbium: YAG laser. Skin microcirculation and skin elasticity have then been evaluated objectively...
August 11, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28792112/a-pilot-study-of-treatment-of-striae-distensae-with-variable-square-pulse-erbium-yag-laser-resurfacing
#4
Rungsima Wanitphakdeedecha, Walailak Meeprathom, Woraphong Manuskiatti
BACKGROUND: Striae distensae (SD) are a frequent skin condition for which treatment remains a challenge. Various laser treatments have been employed to remove the epidermis and cause dermal wound and heating with subsequent dermal collagen remodeling. OBJECTIVE: To determine the efficacy and safety of a variable square pulse Erbium: YAG (VSP Er:YAG) laser for the treatment of striae in skin phototypes III-IV. METHODS: Twenty-one women with SD were treated monthly for 2 months with VSP Er:YAG laser resurfacing using a 7-mm spot size...
August 9, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28776112/laser-treatments-of-active-acne
#5
REVIEW
Lauren E Wiznia, Mary L Stevenson, Arielle R Nagler
The utility of laser therapy is increasingly being recognized in the treatment of active acne vulgaris. We aimed to perform a narrative review of the medical literature on the use of laser therapy for the treatment of active acne vulgaris. We performed a PubMed literature search on September 1, 2016 using the search terms "active acne," "acne," "laser therapy," and "laser surgery." Case reports, case series, cohort, and controlled trials were included. Studies of lasers in the treatment of acne, including erbium glass, Nd:YAG, pulse dye laser (PDL), potassium titanyl phosphate (KTP) laser, and laser-based photodynamic therapy, have been published...
August 4, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28774038/a-filmy-black-phosphorus-polyimide-saturable-absorber-for-q-switched-operation-in-an-erbium-doped-fiber-laser
#6
Tianxian Feng, Dong Mao, Xiaoqi Cui, Mingkun Li, Kun Song, Biqiang Jiang, Hua Lu, Wangmin Quan
We demonstrate an erbium-doped fiber laser passively Q-switched by a black-phosphorus polyimide film. The multi-layer black-phosphorus (BP) nanosheets were prepared via a liquid exfoliation approach exploiting N-methylpyrrolidone as the dispersion liquid. By mixing the BP nanosheets with polyimide (PI), a piece of BP-PI film was obtained after evaporating the mixture in a petri dish. The BP-PI saturable absorber had a modulation depth of 0.47% and was inserted into an erbium-doped fiber laser to realize passive Q-switched operations...
November 11, 2016: Materials
https://www.readbyqxmd.com/read/28755402/combination-of-a-2940%C3%A2-nm-er-yag-laser-with-recombinant-bovine-basic-fibroblast-growth-factor-rb-bfgf-and-light-emitting-diode-red-light-led-rl-for-the-treatment-of-striae-alba-a-pilot-study
#7
Jie Shen, Xin-Gang Lu, Jing-Jing Jin, Hong-Wei Wang
BACKGROUND: Striae distensae (SD) are a common dermatologic problem that plagues many people. Although there are many therapeutic modalities have been used to treat SD, effective method has been disappointing for striae Alba. AIMS: To evaluate the clinical and histopathologic efficacy and safety of the 2940-nm erbium yttrium aluminum garnet (Er:YAG) ablative fractional laser (AFL) with recombinant bovine basic fibroblast growth factor (rb-bFGF) and light-emitting diode-red light (LED-RL) for the treatment of striae alba...
July 29, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28726192/study-of-proliferative-activity-of-vaginal-epithelium-in-women-with-stress-urinary-incontinence-treated-by-er-yag-laser
#8
G A Lapii, A Yu Yakovleva, A I Neimark, E L Lushnikova
The expression of Ki-67 proliferation marker was studied in vaginal biopsy specimens from women with stress urinary incontinence treated using a Fotona nonablative erbium laser. Cells expressing Ki-67 were located in all cases in the parabasal and basal levels of stratified squamous epithelium, the index of labeled nuclei before Er:YAG laser exposure was 19.05±2.86%. After 1-2 months of laser therapy, the index of labeled nuclei in the epithelium increased significantly and reached 31.79±2.25%. These changes were interpreted as a result of epithelial-stromal interactions...
June 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28710660/fractional-er-yag-laser-assisting-topical-betamethasone-solution-in-combination-with-nb-uvb-for-resistant-non-segmental-vitiligo
#9
Ru Yan, Jinping Yuan, Hongqiang Chen, Yuan-Hong Li, Yan Wu, Xing-Hua Gao, Hong-Duo Chen
Resistant non-segmental vitiligo is difficult to be treated. Ablative erbium-YAG (Er:YAG) laser has been used in the treatment of vitiligo, but the ablation of entire epidermis frustrated the compliance of patients. The purpose of this study is to investigate the effects of fractional Er:YAG laser followed by topical betamethasone and narrow band ultraviolet B (NB-UVB) therapy in the treatment of resistant non-segmental vitiligo. The vitiligo lesions of each enrolled patient were divided into four treatment parts, which were all irradiated with NB-UVB...
July 14, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28691887/effects-of-an-erbium-yttrium-aluminum-garnet-er-yag-laser-and-an-ultrasonic-scaler-on-tio2-coated-titanium-surfaces-contaminated-with-subgingival-plaque-an-in-vitro-study-to-assess-post-treatment-biocompatibility-to-osteogenic-cells
#10
Marco Giannelli, Daniele Bani, Alessia Tani, Fabrizio Materassi, Flaminia Chellini, Chiara Sassoli
BACKGROUND: We evaluated the effects of conventional ultrasonic scaler vs. Er-YAG laser on titanium surfaces contaminated with subgingival plaque from peri-implantitis patients in terms of: plaque and bio-corroded titanium oxide coating removal; surface change induction; residual biocompatibility towards osteoblasts. METHODS: Subgingival plaque-coated titanium discs with moderately rough surface were fixed with ethanol and treated with ultrasonic scaler (metal tip) or Er-YAG laser (20...
July 10, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28683481/-recanalization-of-lacrimal-duct-stenosis-by-laserdacryoplasty-using-a-diode-laser-comparison-of-success-rates-using-an-erbium%C3%A2-%C3%A2-yag-laser
#11
Ludwig Stock, Ralf Ungerechts, Karl-Heinz Emmerich
Background In a retrospective study, the success rates of laserdacryoplasty using a diode laser were defined and compared to success rates using an erbium : YAG laser. Using a diode laser at a wave length of 980 nm, thermal destruction of tissue leads to recanalization. Using an erbium : YAG laser at a wave length of 2940 nm, recanalization of punctual stenosis is achieved by formation of a cavitation bubble in a closed system. Materials and Methods 94 patients (64 women, 30 men, mean age 60.8 years) with 107 absolute lacrimal duct stenoses who were treated by laserdacryoplasty using a diode laser were included in a retrospective study...
July 6, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28665655/real-time-observation-of-internal-motion-within-ultrafast-dissipative-optical-soliton-molecules
#12
Katarzyna Krupa, K Nithyanandan, Ugo Andral, Patrice Tchofo-Dinda, Philippe Grelu
Real-time access to the internal ultrafast dynamics of complex dissipative optical systems opens new explorations of pulse-pulse interactions and dynamic patterns. We present the first direct experimental evidence of the internal motion of a dissipative optical soliton molecule generated in a passively mode-locked erbium-doped fiber laser. We map the internal motion of a soliton pair molecule by using a dispersive Fourier-transform imaging technique, revealing different categories of internal pulsations, including vibrationlike and phase drifting dynamics...
June 16, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28656929/effect-of-erbium-yttrium-aluminum-garnet-laser-on-bond-strength-of-a-total-etch-adhesive-system-to-caries-affected-dentin-on-gingival-wall
#13
F Cebe, M Bulbul, I Simsek, M A Cebe, B Ozturk
PURPOSE: To assess the effect of the erbium:yttrium aluminum garnet (Er:YAG) laser on bond strength of a total-etch adhesive system to the caries-affected dentin on the gingival wall. MATERIALS AND METHODS: Ten human molars with proximal carious lesions were randomly divided into two groups. In the first group, the carious dentin was removed with a bur, whereas in the second group it was removed with the Er:YAG laser. Carious lesions were excavated with one of these two techniques until laser fluorescence values decreased to 15 in the center of the lesions...
June 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28652898/effects-of-root-debridement-with-hand-curettes-and-er-yag-laser-on-chemical-properties-and-ultrastructure-of-periodontally-diseased-root-surfaces-using-spectroscopy-and-scanning-electron-microscopy
#14
Reza Amid, Gholam Ali Gholami, Masoud Mojahedi, Maryam Aghalou, Mohsen Gholami, Mahdieh Mirakhori
Introduction: The efficacy of erbium-doped yttrium aluminum garnet (Er:YAG) laser for root debridement in comparison with curettes has been the subject of many recent investigations. Considering the possibility of chemical and ultra-structural changes in root surfaces following laser irradiation, this study sought to assess the effects of scaling and root planing (SRP) with curettes and Er:YAG laser on chemical properties and ultrastructure of root surfaces using spectroscopy and scanning electron microscopy (SEM)...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28646753/mechanical-properties-and-molecular-structure-analysis-of-subsurface-dentin-after-er-yag-laser-irradiation
#15
Zhengdi He, Lingling Chen, Xuejuan Hu, Yasushi Shimada, Masayuki Otsuki, Junji Tagami, Shuangchen Ruan
The purpose of this study was to evaluate the chemical and mechanical modifications in subsurface dentin layer after Er: YAG (Erbium-Yttrium Aluminium Garnet) laser irradiation, as the guidance of new dental restorative materials specific for laser irradiated dentin. MATERIALS AND METHODS: Dentin disks obtained from extracted human molars were prepared and exposed to a single pulse Er:YAG laser irradiation at 80mJ/pulse. After laser irradiation the mechanical and chemical characteristics of intertubular dentin in subsurface layer were studied using nanoindentation tester and micro-Raman spectromy (μ-RS)...
June 3, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28646390/2940-nm-er-yag-fractional-laser-enhanced-the-effect-of-topical-drug-for-psoriasis
#16
Ruilian Li, Jun Zhou, Hui Su, Mei Wang, Yongxian Wang, Shengxiang Xiao, Huiqun Ma
We observed the promoting effects of the 2940-nm erbium:YAG (Er:YAG) fractional laser in topical drug delivery for psoriasis. A total of five (four males and one female) recalcitrant psoriasis patients were given laser treatment eight times at 1-week intervals with the following parameters: 5-11% spot density and 100-μm energy depth. The psoriatic skin lesions on the left knee and the corresponding lesions at the right ones of each psoriasis patient were randomly divided into two groups: laser + topical drug group (L) and drug alone group (D)...
August 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28641206/efficacy-of-surgical-laser-therapy-in-the-management-of-oral-pigmented-lesions-a-systematic-review
#17
Tariq Abduljabbar, Fahim Vohra, Zohaib Akram, Siti Mariam Ab Ghani, Nawwaf Al-Hamoudi, Fawad Javed
BACKGROUND: Oral pigmentation, especially in the gingiva poses esthetic problems. Laser therapy has been widely used for cosmetic therapy in dentistry. The aim of the present study was to systematically review the efficacy of surgical laser therapy (SLT) in the management of oral pigmented lesions (OPL). MATERIALS AND METHODS: The addressed focused question was "Is SLT effective in the management of OPL?" Databases (MEDLINE via PubMed; EMBASE; Cochrane Central Register of Controlled Trials and Cochrane Oral Health Group Trials Register databases) were searched from 1970 up to and including February 2017...
June 15, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28621453/the-pinhole-method-using-an-erbium-yag-laser-for-the-treatment-of-papular-acne-scars
#18
Sang Ju Lee, Jae Min Kim, Young Koo Kim, Seong Jun Seo, Kui Young Park
Papular acne scars are skin-colored or hypopigmented, soft and elevated lesions of the chin and trunk. Papular scars are one of the most difficult acne scars to treat. Herein, we reported two patients with papular acne scars on the chin that were successfully treated by the pinhole method using an Erbium (ER):YAG laser. Good cosmetic results were achieved in both patients. The side effects included mild, intra-, and post-procedural pain and erythema that resolved spontaneously within 2 weeks. The pinhole method with an Er:YAG laser could potentially be used as a safe and effective treatment for papular acne scars...
June 16, 2017: Dermatologic Therapy
https://www.readbyqxmd.com/read/28611487/athermal-synchronization-of-laser-source-with-wdm-filter-in-a-silicon-photonics-platform
#19
Nanxi Li, Zhan Su, Purnawirman, E Salih Magden, Christopher V Poulton, Alfonso Ruocco, Neetesh Singh, Matthew J Byrd, Jonathan D B Bradley, Gerald Leake, Michael R Watts
In an optical interconnect circuit, microring resonators (MRRs) are commonly used in wavelength division multiplexing systems. To make the MRR and laser synchronized, the resonance wavelength of the MRR needs to be thermally controlled, and the power consumption becomes significant with a high-channel count. Here, we demonstrate an athermally synchronized rare-earth-doped laser and MRR. The laser comprises a Si3N4 based cavity covered with erbium-doped Al2O3 to provide gain. The low thermo-optic coefficient of Al2O3 and Si3N4 and the comparable thermal shift of the effective index in the laser and microring cross-sections enable lasing and resonance wavelength synchronization over a wide range of temperatures...
May 22, 2017: Applied Physics Letters
https://www.readbyqxmd.com/read/28598190/paediatric-laser-dentistry-part-2-hard-tissue-laser-applications
#20
G Olivi, C Caprioglio, M Olivi, M D Genovese
Erbium lasers can provide effective and minimally invasive caries removal in children. The bonding phase remains a critic step as well as the choice of material. Glass ionomers exhibits lower bonding properties in laser irradiated teeth compared to the conventional method or to composite and resin modified glass ionomer. Laser can also provide effective decontamination and coagulation effects in vital and non vital pulp therapy of primary teeth, improving and simplifying the cleaning and disinfecting steps.
June 2017: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
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