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YAG laser

Jae-Hui Nam, Young-Jun Choi, Jae Yun Lim, Joon Hong Min, Won-Serk Kim
High-intensity focused ultrasound (HIFU) is regarded as an effective skin-lifting device; however, literature regarding treatment of the aging neck and décolletage with HIFU is scarce. Our study aimed to evaluate the efficacy of combination with HIFU and low-fluence Q-switched Nd:YAG (LQSNY) laser on the aging neck and décolletage. Nineteen women were assessed. HIFU at two visits and LQSNY laser at six visits were used to irradiate the neck and chest. At week 16, improvements were rated using the Dedo classification, Fabi/Bolton Chest Wrinkle Scale (FBCWS), and Global Aesthetic Improvement Scales (GAIS)...
October 20, 2016: Lasers in Medical Science
Pelin Üstüner, Ali Balevi, Mustafa Özdemir
INTRODUCTION: There is no satisfactory and efficient method for long-term removal of white-colored and thin hair. METHODS: We conducted a randomised clinical trial of hirsute patients with excessive white and/or thin hair on the face and/or axilla. In Group I (n: 16), the facial hair on one side of the face was painted with a black eyelash mascara immediately before Nd:YAG laser and the other half was only treated by Nd:YAG. In Group II (n: 20), the axillary hair on one side was painted with the mascara before the Alexandrite laser with the other side being only treated by Alexandrite...
October 20, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
Sahin Bagbanci, Mumtaz Dadali, Yeliz Dadalı, Levent Emir, Ozkan Gorgulu, Ayhan Karabulut
To establish if a retropulsion prevention device for ureteral stones equalizes surgical success and push-back rates of Ho:YAG laser and pneumatic lithotripters for upper ureteral stones. Patients with upper ureteral stones (n = 267) were treated endoscopically at the Department of Urology between April 2014 and December 2015. Patients were randomly assigned to pneumatic and Ho:YAG laser lithotripters as group-1 and group-2, respectively. Lithotripsy was performed with Stone Cone(TM) in both groups. The surgical success rate on the first postoperative day was 81...
October 19, 2016: Urolithiasis
Blagovesta K Yaneva, Plamen I Zagorchev, Elena I Firkova, Ivan T Glavinkov
AIM: To assess temperature changes at specified time intervals during Er:YAG laser scaling and root planing of surfaces with dental calculus. MATERIALS AND METHODS: Fifteen single-rooted teeth with advanced periodontal disease were extracted and fixed in a cylinder thermostat filled with distilled water at constant temperature (35.5°C). A specially designed thermal probe (type K thermocouple) accurate to ±0.1°C over the range from 20°C to 80°C was fitted into the pulp chamber of tooth sample...
September 1, 2016: Folia Medica
Ben H Chew, Dirk Lange
Open ureterolithotomy and pyelolithotomy used to be first line therapy for treating kidney and ureteral stones. With the advent of shockwave lithotripsy, open stone surgery became less prevalent, but once ureteroscopy became more prevalent, open stone surgery became all but extinct. Advances in smaller, more flexible endoscopes and improvements in intracorporeal lithotripters, ureteroscopy has become a mainstay of therapy for kidney stones. The holmium:YAG laser can be utilized through flexible instruments and fragments any stone no matter what it is composed of...
October 19, 2016: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
Kai-Yang Niu, Liang Fang, Rong Ye, Dennis Nordlund, Marca M Doeff, Feng Lin, Haimei Zheng
Controlled synthesis of transition-metal hydroxides and oxides with earth-abundant elements have attracted significant interest because of their wide applications, for example as battery electrode materials or electrocatalysts for fuel generation. Here, we report the tuning of the structure of transition-metal hydroxides and oxides by controlling chemical reactions using an unfocused laser to irradiate the precursor solution. A Nd:YAG laser with wavelengths of 532 nm or 1064 nm was used. The Ni(2+) , Mn(2+) , and Co(2+) ion-containing aqueous solution undergoes photo-induced reactions and produces hollow metal-oxide nanospheres (Ni0...
October 18, 2016: Angewandte Chemie
Jan Schulte, Thomas Sartorius, Johannes Weitenberg, Andreas Vernaleken, Peter Russbueldt
We demonstrate a scheme for nonlinear pulse compression at high average powers based on self-phase modulation in a multi-pass cell using fused silica as the nonlinear medium. The scheme is suitable for compression of pulses with peak powers exceeding the threshold for critical self-focusing. At >400  W of input power, the pulses of a Yb:YAG-Innoslab laser system (10 MHz repetition rate, 850 fs pulse duration) are spectrally broadened from 1.6 to >13.5  nm bandwidth while maintaining almost diffraction-limited beam quality...
October 1, 2016: Optics Letters
Frank Schwarz, Andrea Schmucker, Jürgen Becker
In patients with peri-implant mucositis and peri-implantitis, what is the efficacy of nonsurgical (i.e. referring to peri-implant mucositis and peri-implantitis) and surgical (i.e. referring to peri-implantitis) treatments with alternative or adjunctive measures on changing signs of inflammation compared with conventional nonsurgical (i.e. mechanical/ultrasonic debridement) and surgical (i.e. open flap debridement) treatments alone? After electronic database and hand search, a total of 40 publications (reporting on 32 studies) were finally considered for the qualitative and quantitative assessment...
December 2015: Int J Implant Dent
Erica Roitero, Federico Lasserre, Marc Anglada, Frank Mücklich, Emilio Jiménez-Piqué
OBJECTIVE: The aim of this work is to generate micrometric linear patterns with different topography on dental grade zirconia by means of UV laser interference and to assess the quality of the produced surface, both in term of the geometry produced and of the surface damage induced in the material. METHODS: The third harmonic of a Q-switched Nd:YAG laser (355nm, pulse duration of 10ns and repetition rate of 1Hz) was employed to pattern the surface of 3Y-TZP with micrometric-spaced lines...
October 10, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Krisztina Somogyári, Péter Móricz, Imre Gerlinger, László Kereskai, István Szanyi, Ildikó Takács
The aim of this study was to evaluate the short and medium-term effects of radiofrequency (RF) and potassium titanyl phosphate (KTP) and neodymium-yttrium-aluminum garnet (Nd:YAG) laser treatment on the inferior turbinate mucosa in a porcine model. Following randomization, the inferior turbinates were treated either with RF submucosally or with the KTP or the Nd:YAG laser on the surface under videoendoscopic control. Tissue samples were taken at the end of postoperative weeks 1 and 6, and were evaluated macroscopically and histopathologically...
October 11, 2016: Surgical Innovation
David M Harris, Lou Reinisch
BACKGROUND AND OBJECTIVE: Selective killing of pathogens by laser is possible due to the difference in absorption of photon energy by pathogens and host tissues. The optical properties of pathogenic microorganisms are used along with the known optical properties of soft tissues in calculations of the laser-induced thermal response of pathogen colonies embedded in a tissue model. The objective is to define the laser parameters that optimize pathogen destruction and depth of the bactericidal effect...
October 10, 2016: Lasers in Surgery and Medicine
Gunseli Katirci, R Banu Ermis
BACKGROUND: The aim of this in vitro study was to evaluate the microindentation hardness and chemical composition of residual dentin left at the cavity bottom following removal of carious dentin using the Carisolv chemomechanical and Er:YAG laser caries excavation methods in comparison with the conventional tungsten-carbide bur excavation. METHODS: Sixty-nine extracted permanent teeth with occlusal dentin caries were assigned into three groups according to caries removal technique...
2016: SpringerPlus
Takafumi Ohshiro, Toshio Ohshiro, Katsumi Sasaki, Kazuo Kishi
Background and aims: Recently novel picosecond duration lasers (ps-lasers) have been developed for the treatment of multicolored and recalcitrant tattoos, and safety and efficacy have been reported. We therefore hypothesized that the ps-laser could be an alternative treatment for dermal pigmented lesions and performed a retrospective review to evaluate the efficacy and safety of the ps-laser. Subjects and methods: A retrospective photographic review of 10 patients with dermal pigmented lesions was performed (ages from 4 months to 52 yr), 6 nevus of Ota, 3 ectopic Mongolian spots and 1 Mongolian spots...
June 29, 2016: Laser Therapy
Ana-Salvaterra Azevedo, Luís-Silva Monteiro, Fernando Ferreira, Maria-Leonor Delgado, Fernanda Garcês, Sofia Carreira, Marco Martins, Juan Suarez-Quintanilla
BACKGROUND: Lasers have become standard tools for the surgical treatment of oral lesions. The purpose of this study is to determine the surgical margins and histologically evaluate the tissue thermal effects induced by different types of surgical instruments. MATERIAL AND METHODS: Cuts were made in pork tongues' mucosa with different lasers (Er:YAG at 2W with and without air / water spray and at 4W with and without air / water spray; CO2 at 3.5W and 7W in pulsed mode and at 7W in continuous mode; the diode laser at 3...
October 2016: Journal of Clinical and Experimental Dentistry
Tolga Yilmaz, Ahu Yilmaz
PURPOSE: To evaluate changes in central macula thickness (CMT), subfoveal choroid thickness (SCT), and intraocular pressure (IOP) before and after neodymium:yttrium-aluminum-garnet (Nd:YAG) laser capsulotomy. METHODS: 42 eyes of 42 patients who underwent Nd:YAG laser capsulotomy were included in this prospective study. CMT, SCT, and IOP were evaluated preoperatively and at postoperative week 1 and postoperative months 1, 3, 6, and 12. RESULTS: CMT was 238...
October 3, 2016: International Ophthalmology
Georg Gerten, Michael Schultz, Uwe Oberheide
: We describe a technique that uses a femtosecond laser (femtosecond laser pseudophakic capsulotomy) to treat capsule contraction syndrome (capsule phimosis) that may occur after cataract surgery and intraocular lens (IOL) implantation. Enlarging the capsulotomy with a femtosecond laser may offer advantages over the existing treatment methods, neodymium:YAG laser capsulotomy and manual extension of the capsulorhexis. FINANCIAL DISCLOSURE: None of the authors has a financial or proprietary interest in any material or method mentioned...
September 2016: Journal of Cataract and Refractive Surgery
Ali Balevi, Pelin Üstüner, Mustafa Özdemir
BACKGROUND: Recalcitrant facial verruca plana (FVP) may persist for years and full remission is not always achieved with conventional therapies. The clinical success rates reported for different lasers are highly variable and only one study evaluated the Er:YAG laser for the treatment of FVP. OBJECTIVE: To determine whether Er:YAG is safe and effective for the treatment of recalcitrant FVP. METHODS: Forty-six patients with recalcitrant FVP were treated by Er:YAG at four-week intervals...
October 3, 2016: Journal of Dermatological Treatment
J Gan, S Liu, L Zhou, Y Wang, J Guo, C Huang
PURPOSE: To investigate the effect of neodymium-doped yttrium aluminum garnet (Nd:YAG) laser irradiation pretreatment on the long-term bond strength of an etch-and-rinse adhesive to dentin. METHODS: Fifty molars were sectioned parallel to the occlusal plane and randomly divided into two groups (n=25 per group): control group (no treatment) and laser group (dentin surfaces were treated with Nd:YAG laser at a setting of 100 mJ/10 Hz). Afterward, resin was bonded to the dentin surface using a two-step etch-and-rinse adhesive (Adper SingleBond 2), and then 150 beams of each group were produced...
September 30, 2016: Operative Dentistry
Huri Sabur, Mehmet Baykara, Basak Can
PURPOSE: To compare the results of conventional 1064 nm neodymium-doped yttrium-aluminum garnet laser goniopuncture (Nd:YAG-GP) and selective 532 nm Nd:YAG laser (selective laser trabeculoplasty [SLT])  gonioreconditioning (GR) on trabeculo-Descemet's membrane in eyes resistant to viscocanalostomy surgery. METHODS: Thirty-eight eyes of 35 patients who underwent laser procedure after successful viscocanalostomy surgery were included in the study. When postoperative intraocular pressure (IOP) was above the individual target, the eyes were scheduled for laser procedure...
August 2016: Indian Journal of Ophthalmology
Anastasia Beketova, Nikolaos Poulakis, Athina Bakopoulou, Triantafillia Zorba, Lambrini Papadopoulou, Dimitrios Christofilos, Nikolaos Kantiranis, George A Zachariadis, Eleana Kontonasaki, Gerasimos A Kourouklis, Konstantinos M Paraskevopoulos, Petros Koidis
OBJECTIVES: Aims of this study were to investigate the optimal conditions of laser irradiation of a novel Bioactive Glass/Dental Ceramic-BP67 composite for acceleration of hydroxyapatite-HA formation and to assess cellular responses on the precipitated HA region. METHODS: BP67 (Bioactive Glass: 33.3%, Dental Ceramic: 66.7%) was fabricated by the sol-gel method. A laser assisted biomimetic-LAB process was applied to BP67 sintered specimens immersed in 1.5-times concentrated simulated body fluid-1...
September 24, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
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