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Nd Yag laser

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https://www.readbyqxmd.com/read/29916304/long-term-follow-up-of-neodymium-yag-laser-anterior-capsulotomy-for-the-treatment-of-anterior-capsular-phimosis
#1
Hehua Ye, Jiming Zhang, Yiyong Qian
Objective To investigate the long-term safety and efficacy of Nd:YAG laser anterior capsulotomy for the treatment of anterior capsular phimosis. Methods We retrospectively analyzed a consecutive case series of Nd:YAG laser anterior capsulotomy in patients with anterior capsular phimosis, who were treated between November 2012 and April 2014. Data collected included risk factors, interval between surgery and capsulotomy, best-corrected visual acuity (BCVA), and diameter of anterior capsule opening before and after Nd:YAG laser anterior capsulotomy...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29907956/combined-fractional-carbon-dioxide-laser-and-long-pulsed-neodymium-yttrium-aluminium-garnet-1064-nm-laser-in-treatment-of-hidradenitis-suppurativa-a-prospective-randomized-intra-individual-controlled-study
#2
Amira A Abdel Azim, Rania T Salem, Rania Abdelghani
BACKGROUND: Multiple treatment modalities were introduced for treatment of hidradenitis suppurativa (HS) but mostly with unsatisfactory results. OBJECTIVE: In this prospective randomized right-left intra-individual controlled study, we studied the safety and efficacy of combined treatment with fractional CO2 laser and long pulsed Nd : YAG (1064 nm) laser in treatment of HS. METHODS: Twenty adult patients with HS were randomized into this study...
June 16, 2018: International Journal of Dermatology
https://www.readbyqxmd.com/read/29905504/er-yag-laser-for-metal-and-ceramic-bracket-debonding-an-in-vitro-study-on-intrapulpal-temperature-sem-and-eds-analysis
#3
Kinga Grzech-Leśniak, Jacek Matys, Dorota Żmuda-Stawowiak, Krzysztof Mroczka, Marzena Dominiak, Aldo Brugnera Junior, Reinhard Gruber, Georgios E Romanos, Anton Sculean
OBJECTIVE: To evaluate the effects of bracket removal using an erbium laser on the pulp temperature and enamel surface. BACKGROUND: Removal of orthodontic brackets with conventional debonding pliers may result in enamel cracks. To avoid damage to the enamel surface and effectively remove metal or ceramic brackets, different types of lasers, such as Nd:YAG, CO2 , TM:YAP, diode laser, or Er:YAG, have been introduced for debonding. MATERIALS AND METHODS: A total of 55 brackets (n = 55; 20 metal and 35 ceramic ones) were bonded to 55 caries-free premolars extracted for orthodontic indications...
June 15, 2018: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29905503/antibacterial-and-smear-layer-removal-efficacy-of-er-yag-laser-irradiation-by-photon-induced-photoacoustic-streaming-in-primary-molar-root-canals-a-preliminary-study
#4
Emre Korkut, Emrah Torlak, Onur Gezgin, Hazal Özer, Yağmur Şener
OBJECTIVE: The objective of this study was to compare antibacterial and smear layer removal efficacy of the erbium:yttrium-aluminium-garnet (Er:YAG) laser irradiation by photon-induced photoacoustic streaming (PIPS), neodymium:yttrium-aluminium-garnet (Nd:YAG), and diode lasers and conventional irrigation agent in primary molar root canals. BACKGROUND: The selection, application, and activation of the irrigant are important factors affecting the success of the endodontic treatment...
June 15, 2018: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29905059/-current-progress-of-laser-assisted-cartilage-reshaping-for-prominent-ear
#5
REVIEW
Fengfeng Guo, Xiaobo Yu, Haiyue Jiang
Objective: To summarize the current progress of laser-assisted cartilage reshaping (LACR) for prominent ear. Methods: The domestic and abroad article concerning the LACR in treatment of prominent ear was reviewed and analyzed. Results: As a new technique, there were three types of LACR therapies that been used for prominent ear. LACR with the 1 064 nm Nd/YAG laser is painful and the penetration depth of the 1 064 nm Nd/YAG laser is greater than that of the 1540 nm Er/Glass laser which is caused more tissue injury...
June 1, 2018: Chinese Journal of Reparative and Reconstructive Surgery
https://www.readbyqxmd.com/read/29889917/comparison-of-gingival-troughing-by-laser-and-retraction-cord
#6
Xian Tao, Jiang-Wu Yao, Hom-Lay Wang, Cui Huang
This study was aimed at comparing the most common two methods for gingival troughing: presaturated cord and lasers (including diode, Nd:YAG, and Er:YAG). A total of 108 anterior teeth (58 maxillary and 50 mandibular) in 50 patients were included in this study. Gingival treatment was carried out in the following four groups: presaturated cord, diode laser, Nd:YAG laser, and Er:YAG laser. The gingival width and gingival recession (GR) were measured at different times (at the time of treatment, after 1 week, and after 4 weeks)...
July 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29877931/sustained-benefit-after-treatment-of-acne-vulgaris-using-only-a-novel-combination-of-long-pulsed-and-q-switched-1064-nm-nd-yag-lasers
#7
Abnoeal D Bakus, Dina Yaghmai, Mary C Massa, Benjamin C Garden, Jerome M Garden
BACKGROUND: Acne vulgaris remains a challenging disease to treat in many patients. Traditional therapies may have limited successes with potential side effects. Laser and light energy devices may offer a desirable alternative. OBJECTIVE: To evaluate the effectiveness and safety in using a combination laser approach with both long-pulsed (LP) and Q-switched (QS) Nd:YAG lasers in the treatment of active acne. METHODS: Twenty patients with moderate to severe inflammatory acne were treated with LP YAG laser followed immediately with QS YAG laser...
June 5, 2018: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/29877437/9-kilowatt-level-direct-liquid-cooled-nd-yag-multi-module-qcw-laser
#8
Jiayu Yi, Bo Tu, Xiangchao An, Xu Ruan, Jing Wu, Hua Su, Jianli Shang, Yi Yu, Yuan Liao, Haixia Cao, Lingling Cui, Qingsong Gao, Kai Zhang
An average 9 kilowatt-level direct-D2 O-cooled side-pumped Nd:YAG multi-disk laser resonator at QCW mode with a pulse width of 250μs is presented, in which the straight-through geometry is adopted the oscillating laser propagates through 40 Nd:YAG thin disks and multiple cooling D2 O flow layers in the Brewster angle. Much attention has been paid on the design of the gain module, including an analysis of the loss of the laser resonator and the design of the Nd:YAG thin disk. Experimentally, laser output with the highest pulse energy of more than 20 J is obtained at a repetition frequency of 10 Hz...
May 28, 2018: Optics Express
https://www.readbyqxmd.com/read/29877368/direct-bleaching-of-a-cr-4-yag-saturable-absorber-in-a-passively-q-switched-nd-yag-laser
#9
Baichao Zhang, Ying Chen, Pengyuan Wang, Yanchao Wang, Jinbo Liu, Shu Hu, Xusheng Xia, Youbao Sang, Hong Yuan, Xianglong Cai, Dong Liu, Baodong Gai, Jingwei Guo
In this work, the anisotropy of nonlinear absorption in a crystal Q-switch was considered when we established coupled rate equations of a passively Q-switched laser. A [100]-cut Cr4+ :YAG crystal, with initial transmission T0 =40%, was used as the Q-switch to evaluate the theoretical model, and the results of the simulation were in good accordance with the experiment. In order to control timing jitter of the passively Q-switched laser, an actively Q-switched Nd:YAG laser was applied to directly bleach the [100]-cut Cr4+ :YAG crystal...
June 1, 2018: Applied Optics
https://www.readbyqxmd.com/read/29870629/bilateral-acute-angle-closure-glaucoma-induced-by-duloxetine
#10
Atum Mahmut, Vildan Tunc, Enes Demiryurek, Alagoz Gursoy
Introduction - To present a rare case of bilateral acute angle-closure glaucoma secondary to duloxetine administered for the treatment of depression. Case presentation - A 46 year old woman developed bilateral closed angle glaucoma after 15 days of duloxetine usage. Intraocular pressures (IOP) were 52 and 55 mm Hg in right and left eyes respectively, with shallow anterior chamber and angle closure on gonioscopy. Discontinuing duloxetine treatment, initiation of antiglaucomatous treatment and bilateral Nd:YAG Laser iridotomy obtained normalized IOP and anterior chamber depth...
September 30, 2017: Ideggyógyászati Szemle
https://www.readbyqxmd.com/read/29862699/-focusing-optical-applied-system-to-nd-yag-laser-disruptor-for-ophthalmology
#11
Fanqiang Meng, Zipeng Bian, Yanyang Yuan, Yanqun Wang
In this paper, we design an optical system that can adjust YAG laser focus, and it can avoid the damage of intraocular lens in the YAG laser surgery. Focusing optical system uses beam expander principle, uses the spiral cam and the worm as adjust part, which can move YAG laser focus from -500 μm to +500 μm on the target tissue.
November 30, 2017: Zhongguo Yi Liao Qi Xie za Zhi, Chinese Journal of Medical Instrumentation
https://www.readbyqxmd.com/read/29858507/a-systematic-study-on-the-generation-of-multimetallic-lanthanide-fullerene-ions-by-laser-ablation-mass-spectrometry
#12
Yiyun Wang, LiFu Ma, Lei Mu, Juan Ren, Xianglei Kong
RATIONALE: Laser ablation masss spectromety has been previously proved to be a powerful tool for studying endohedro metallofullerene (EMF) ions. Our previous study showed the possiblity of forming multi-metallofullerene ions containg more than six metal atoms for La, Y and Lu. Thus, it is important to conduct a systematic study on the generation of multi-metallofullerenes and their distribuitons for all lanthanide elements. METHODS: Experiments were performed on a 7...
June 1, 2018: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/29850962/evaluation-of-the-effects-of-er-yag-laser-nd-yag-laser-and-two-different-desensitizers-on-dentin-permeability-in-vitro-study
#13
Sevda Kurt, Tuğrul Kırtıloğlu, Nasibe Aycan Yılmaz, Ertan Ertaş, Hasan Oruçoğlu
The purpose of this in vitro study was to evaluate and compare the efficacy of erbium-doped yttrium aluminum garnet (Er:YAG) laser, neodymium-doped yttrium aluminum garnet (Nd:YAG) laser, PrevDent nano-hydroxyapatite toothpaste plus Repairing Serum Kit (PNH), and NUPRO Sensodyne Prophylaxis Paste with NovaMin (NPP) on dentin permeability reduction. Forty dentin discs obtained from bovine incisors were divided into four study groups: Er:YAG laser-treated (2940 nm; 0.2 W, 80 mJ/pulse, 3 Hz); Nd:YAG laser-treated (1064 nm; 1 W, 10 Hz); PNH-treated; and NPP-treated groups...
May 30, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29805401/evaluation-of-the-anterior-segment-parameters-after-nd-yag-laser-capsulotomy-effect-the-design-of-intraocular-lens-haptic
#14
Berkay Akmaz, Fahrettin Akay
Objective: To evaluate the changes in anterior segment parameters after neodymium-yttrium-aluminum-garnet (Nd:YAG) laser capsulotomy in 1-piece and 3-piece IOLs. Methods: In an institution, 65 eyes of 65 consecutive pseudophakic patients with posterior capsule opacification underwent Nd:YAG laser capsulotomy. The patients were divided into two groups according to the IOL type. Group-1 consisted of 35 subjects with 1-piece IOL and Group-2 consisted of 30 subjects with 3-piece IOL...
March 2018: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29799825/treatment-of-previously-treated-facial-capillary-malformations-results-of-single-center-retrospective-objective-3-dimensional-analysis-of-the-efficacy-of-large-spot-532-nm-lasers
#15
Bartłomiej Kwiek, Marcin Ambroziak, Katarzyna Osipowicz, Cezary Kowalewski, Michał Rożalski
BACKGROUND: Current treatment of facial capillary malformations (CM) has limited efficacy. OBJECTIVE: To assess the efficacy of large spot 532 nm lasers for the treatment of previously treated facial CM with the use of 3-dimensional (3D) image analysis. PATIENTS AND METHODS: Forty-three white patients aged 6 to 59 were included in this study. Patients had 3D photography performed before and after treatment with a 532 nm Nd:YAG laser with large spot and contact cooling...
June 2018: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/29795968/statistical-analysis-of-complications-in-laser-treatment-under-general-anesthesia-performed-for-pediatric-inpatients
#16
Yumi Hirano, Tsukasa Isago, Katsuhiro Kure, Takashi Yamaki
Objective: We report relationship between complications and predictive factors of occurrence with multivariate analysis for cases of laser treatment under general anesthesia.Study Design: Pediatric patients (330 cases, aged 1 to 15 years old) who underwent laser treatment under inpatient general anesthesia against body surface hemangiomas or melanocytosis were examined for the complications. Methods: Retrospective study from medical and anesthesia records, statistical assessment was carried out using multivariate analysis by univariate and logistic regression analysis, and p value less than 0...
March 31, 2018: Laser Therapy
https://www.readbyqxmd.com/read/29791364/synchronization-of-pairs-of-nanosecond-pulses-from-a-laser-with-two-gain-crystals-pumped-with-two-different-sources
#17
Daniel Staufert, Roger S Cudney
We report a laser that emits two Q-switched pulses, one at 1.047 μm and the other at 1.064 μm, generated by a Nd:YLF and a Nd:YVO4 , respectively. The crystals are pumped by two fiber-coupled diode lasers (808 nm and 880 nm); the delay between the pulses can be controlled by adjusting the power of the pumps. Two kinds of Q-switching techniques are reported, passive (Cr:YAG saturable absorber) and active (electro-optic modulator). We model both the active and passive Q switching and make a comparison between numerical simulations and experiments...
May 10, 2018: Applied Optics
https://www.readbyqxmd.com/read/29784345/development-of-dried-serum-spot-sampling-techniques-for-the-assessment-of-trace-elements-in-serum-samples-by-la-icp-ms
#18
María Pilar Chantada-Vázquez, Jorge Moreda-Piñeiro, Alicia Cantarero-Roldán, Pilar Bermejo-Barrera, Antonio Moreda-Piñeiro
A novel approach for serum analysis by dried matrix spot (DMS) technique is proposed. The methodology consists of sampling filter paper discs (2.7 mm in diameter) containing the large amount of serum retained after a single spotting. Several oxidizers (sodium chlorate, sodium azide, acetic acid, formic acid, 1-butyl-3-methylimidazoliumm chloride/bromide) were tested (oxidizers premixed with the sample before spotting, and papers previously soaked in concentrated additive/oxidizer solutions). Direct multi-element determination (Al, Be, Ca, Cu, Fe, K, Li, Mg, Mn, Mo, Na, P, Rb, Se, V, and Zn) in dried serum spots at very low levels was therefore assessed by laser ablation (LA) coupled with inductively coupled plasma - mass spectrometry (ICP-MS)...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29780935/two-cases-of-cytomegalovirus-panuveitis-in-immunocompetent-patients
#19
Masato Sakai, Hiroshi Takase, Kenichi Namba, Kazuomi Mizuuchi, Daiju Iwata, Susumu Ishida
Purpose: To report two cases of panuveitis in immunocompetent patients in which cytomegalovirus was involved. Observation: Case 1 was a 46-year-old man who had a history of recurrent anterior chamber inflammations in his left eye. After Nd:YAG laser posterior capsulotomy, he developed panuveitis with vitreous haze and periphlebitis. Polymerase chain reaction (PCR) examination revealed the presence of cytomegalovirus (CMV) DNA in the anterior chamber (AC). He responded well to a series of intravitreal injections of ganciclovir (GCV)...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29780902/nd-yag-laser-for-preretinal-hemorrhage-in-diabetic-retinopathy
#20
Dimitrios Karagiannis, Georgios A Kontadakis, Declan Flanagan
Purpose: To present fundus images of a case with severe preretinal hemorrhage in diabetic retinopathy that was treated with posterior hyaloidotomy with an Nd:YAG laser. Observations: A 35-year-old diabetic patient presented with sudden painless loss of vision due to severe preretinal hemorrhage over the macular area and high risk proliferative diabetic retinopathy. Her visual acuity was counting fingers. Posterior hyaloid face was treated with Nd:YAG laser (posterior hyaloidotomy)...
June 2018: American Journal of Ophthalmology Case Reports
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