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https://www.readbyqxmd.com/read/28916849/1000-consecutive-cases-of-laser-assisted-liposuction-utilizing-the-1440%C3%A2-nm-wavelength-nd-yag-laser-assessing-the-safety-and-efficacy
#1
Christopher T Chia, Mark G Albert, Sharon Del Vecchio, Spero J Theodorou
BACKGROUND: Liposuction remains one of the most popular aesthetic surgery procedures performed today, and it has undergone continuous refinements over the past four decades. Advancements in anesthesia, improvements in instrumentation, better understanding of fluid dynamics and the addition of energy to liposuction have led to better outcomes with improved safety and efficacy. OBJECTIVES: The purpose of this study is to review 1000 consecutive laser-assisted liposuction (LAL) cases utilizing the 1440 nm wavelength...
September 15, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28914935/optical-parametric-generation-in-orientation-patterned-gallium-phosphide
#2
Hanyu Ye, S Chaitanya Kumar, Junxiong Wei, P G Schunemann, M Ebrahim-Zadeh
We report an optical parametric generator (OPG) based on the new nonlinear material, orientation-patterned gallium phosphide (OP-GaP). Pumped by a Q-switched nanosecond Nd:YAG laser at 1064 nm with 25 kHz pulse repetition rate, the OPG can be tuned across 1721-1850 nm in the signal and 2504-2787 nm in the idler. Using a 40-mm-long crystal in single-pass configuration, we have generated a total average output power of up to ∼18  mW, with ∼5  mW of idler power at 2670 nm, for 2 W of input pump power...
September 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28912945/comparison-of-er-yag-laser-and-ultrasonic-scaler-in-the-treatment-of-moderate-chronic-periodontitis-a-randomized-clinical-trial
#3
Reza Birang, Jaber Yaghini, Naeimeh Nasri, Nasim Noordeh, Pedram Iranmanesh, Alireza Saeidi, Narges Naghsh
Introduction: Periodontitis is an inflammatory periodontal disease that leads to tooth loss. Recently laser has been introduced as an alternative treatment for periodontitis. The aim of the present study was to compare the effect of Erbium-doped Yttrium Aluminum Garnet (Er:YAG) laser with ultrasonic scaler in patients with moderate chronic periodontitis. Methods: In this randomized single-blind clinical trial, 27 patients with moderate chronic periodontitis were selected. One quadrant of the patients was treated by Er:YAG laser and the other one by ultrasonic scaler...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28912942/efficacy-of-sodium-hypochlorite-activated-with-laser-in-intracanal-smear-layer-removal-an-sem-study
#4
Shahriar Shahriari, Shahin Kasraei, Ghodratollah Roshanaei, Hamed Karkeabadi, Hossein Davanloo
Introduction: The purpose of the present study was to evaluate the different concentrations of sodium hypochlorite activated with laser in removing of the smear layer in the apical, middle, and coronal segments of root canal walls by scanning electron microscopy analysis. Methods: Sixty single-rooted human mandibular teeth were decoronated to a standardized length. The samples were prepared by using Race rotary system to size 40, 0.04 taper and divided into 4 equal groups (n = 15). Group 1, irrigated with EDTA 17% and 5...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28912941/the-effect-of-er-yag-laser-irradiation-and-different-concentrations-of-sodium-hypochlorite-on-shear-bond-strength-of-composite-to-primary-teeth-s-dentin
#5
Zahra Bahrololoomi, Azam Dadkhah, Mohammadsadegh Alemrajabi
Introduction: The aim of this study was to evaluate the effect of various concentrations of NaOCl on shear bond strength of composite resin to dentin of primary teeth, prepared with laser and bur. Methods: In this in vitro study, 48 primary molars were sectioned at mesiodistal direction and were randomly divided into 6 groups; G1: bur, G2: bur + NaOCl 2.5%, G3: bur + NaOCl 5.25%, G4: laser, G5: laser + NaOCl 2.5%, G6: laser + NaOCl 5.25%. One-Step Plus adhesive was applied after phosphoric acid gel and NaOCl over the dentin surfaces for all groups, and composite resin cylinders were bonded to the samples...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28912939/effect-of-er-yag-laser-and-sandblasting-in-recycling-of-ceramic-brackets
#6
Soghra Yassaei, Hossein Aghili, Azadeh Hosseinzadeh Firouzabadi, Hamidreza Meshkani
Introduction: This study was performed to determine the shear bond strength of rebonded mechanically retentive ceramic brackets after recycling with Erbium-Doped Yttrium Aluminum Garnet (Er:YAG) laser or sandblasting. Methods: Twenty-eight debonded ceramic brackets plus 14 intact new ceramic brackets were used in this study. Debonded brackets were randomly divided into 2 groups of 14. One group was treated by Er:YAG laser and the other with sandblasting. All the specimens were randomly bonded to 42 intact human upper premolars...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28912936/combination-of-q-switched-nd-yag-and-fractional-erbium-yag-lasers-in-treatment-of-melasma-a-randomized-controlled-clinical-trial
#7
Shiva Alavi, Ehsan Abolhasani, Sharin Asadi, Mohammadali Nilforoushzadeh
Introduction: Ablative and nonablative lasers have been used to treat melasma. We aimed to assess and compare the combining Q-switched Nd:YAG laser (QSNYL) and fractional erbium:YAG laser (FEYL) with QSNYL alone in treatment of melasma. Methods: This randomized controlled clinical trial was performed in our Research Center during 2013-2014. Women with melasma and without a history of keloid formation, hypersensitivity to hydroquinone, or pigmentary changes due to laser therapy were randomly allocated to receive four sessions of either QSNYL-FEYL combination or QSNYL alone...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28906574/efficacy-and-safety-of-a-novel-picosecond-laser-using-combination-of-1%C3%A2-064-and-595%C3%A2-nm-on-patients-with-melasma-a-prospective-randomized-multicenter-split-face-2-hydroquinone-cream-controlled-clinical-trial
#8
Young-Jun Choi, Jae-Hui Nam, Jung Yup Kim, Joon Hong Min, Kui Young Park, Eun Jung Ko, Beom Joon Kim, Won-Serk Kim
BACKGROUND AND OBJECTIVES: Melasma is a common acquired, chronic hypermelanosis and still remains a therapeutic challenge. The low-fluence 1 064 nm Q-switched Nd:YAG laser is the most widely used for the treatment of moderate to severe melasma in Asia. Recently, the picosecond laser has been introduced for various pigmentary disorders such as melasma. We evaluated the efficacy and safety of a picosecond laser with dual-wavelengths (1 064 and 595 nm) and topical 2% hydroquinone (HQ) combination therapy on patients with melasma, and compared results with those obtained with 2% HQ alone...
September 14, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28904836/laser-processing-of-thin-film-multilayer-structures-comparison-between-a-3d-thermal-model-and-experimental-results
#9
Babak B Naghshine, Amirkianoosh Kiani
In this research, a numerical model is introduced for simulation of laser processing of thin film multilayer structures, to predict the temperature and ablated area for a set of laser parameters including average power and repetition rate. Different thin-films on Si substrate were processed by nanosecond Nd:YAG laser pulses and the experimental and numerical results were compared to each other. The results show that applying a thin film on the surface can completely change the temperature field and vary the shape of the heat affected zone...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28904362/detailed-balance-limit-of-efficiency-of-broadband-pumped-lasers
#10
Sergey Nechayev, Carmel Rotschild
Broadband light sources are a wide class of pumping schemes for lasers including LEDs, sunlight and flash lamps. Recently, efficient coupling of broadband light to high-quality micro-cavities has been demonstrated for on-chip applications and low-threshold solar-pumped lasers via cascade energy transfer. However, the conversion of incoherent to coherent light comes with an inherent price of reduced efficiency, which has yet to be assessed. In this paper, we derive the detailed balance limit of efficiency of broadband-pumped lasers and discuss how it is affected by the need to maintain a threshold population inversion and thermodynamically dictated minimal Stokes' shift...
September 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28895432/intraductal-laser-fiber-tip-fracture-and-retrieval-during-sialendoscopic-laser-assisted-lithotripsy
#11
Andrew J Goates, Raymond W Kung, Chad R Tracy, Henry T Hoffman
Fragmentation of flexible laser fiber tips has been reported to occur during therapeutic bronchoscopy and urologic stone treatment. We report fragmentation of 200-µm single-use silica-based fibers during sialendoscopy-controlled Holmium:YAG laser treatment of a parotid and a submandibular stone. The technique employed to successfully retrieve the fiber tips is described in the context of identifying this potential complication from endoscopic management of sialolithiasis.
September 1, 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/28890621/soft-tissue-applications-of-er-cr-ysgg-laser-in-pediatric-dentistry
#12
Gyanendra Kumar, Ferah Rehman, Vivek Chaturvedy
Soft tissue laser, such as diode and Nd:YAG lasers were initially used in soft tissue lesions because of its increased success rate. It was because of the fact that these lasers were well-absorbed by chromophores, such as hemoglobin and melanin which are found abundant in the oral mucosa. The introduction of erbium family in 1990 comprising the Er:YAG and Er,Cr:YSGG lasers made the hard tissue laser a boon for dentistry. Erbium, chromium-doped yttrium, scandium, gallium and garnet (Er,Cr:YSGG) was introduced in 1997 for the surgical needs of clinical dentistry in general practice...
April 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28889348/treatment-of-erythemato-telangiectatic-rosacea-with-brimonidine-alone-or-combined-with-vascular-laser-based-on-preliminary-instrumental-evaluation-of-the-vascular-component
#13
Giuseppe Micali, Federica Dall'Oglio, Anna Elisa Verzì, Ivano Luppino, Karishma Bhatt, Francesco Lacarrubba
The purpose of this study is to evaluate the outcome of a series of patients with erythematotelangiectatic rosacea (ETR) affected by persistent erythema and varying degree of telangiectasias being treated with brimonidine alone or combined with a vascular laser based on the type of vascular components preliminarily evaluated by clinical and instrumental observation. Ten patients affected by ETR were enrolled in a pilot, open study. Instrumental evaluation included erythema-directed digital photography by VISIA-CR™ system and X10 dermoscopy...
September 9, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28882598/iris-cysts-a-comprehensive-review-on-diagnosis-and-treatment
#14
REVIEW
Ilias Georgalas, Petros Petrou, Dimitrios Papaconstantinou, Dimitrios Brouzas, Chrysanthi Koutsandrea, Menelaos Kanakis
Iris cysts, both primary and secondary, are a diagnostic and a treatment challenge. Primary cysts arise either from the iris pigment epithelium or the iris stroma. Posterior pigment epithelial cysts are subdivided according to their location as central, midzonal and peripheral. Iris stromal cysts are classified either as congenital or acquired. Free floating cysts are usually dislodged pigment epithelial cysts. Secondary cysts are classified according to the underlying cause as implantation cysts, drug-induced, uveitic, tumor-induced, parasitic, or as cysts associated with systemic disorders...
September 4, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28874879/violet-laser-diode-enables-lighting-communication
#15
Yu-Chieh Chi, Yu-Fang Huang, Tsai-Chen Wu, Cheng-Ting Tsai, Li-Yin Chen, Hao-Chung Kuo, Gong-Ru Lin
Violet laser diode (VLD) based white-light source with high color rendering index (CRI) for lighting communication is implemented by covering with Y3Al5O12:Ce(3+) (YAG:Ce) or Lu3Al5O12:Ce(3+)/CaAlSiN3:Eu(2+) (LuAG:Ce/CASN:Eu) phosphorous diffuser plates. After passing the beam of VLD biased at 70 mA (~2I th ) through the YAG:Ce phosphorous diffuser, a daylight with a correlated color temperature (CCT) of 5068 K and a CRI of 65 is acquired to provide a forward error correction (FEC) certified data rate of 4...
September 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28872726/bond-strength-of-resin-cement-and-glass-ionomer-to-nd-yag-laser-treated-zirconia-ceramics
#16
Nafiseh Asadzadeh, Foojan Ghorbanian, Farzaneh Ahrary, Hamidreza Rajati Haghi, Reza Karamad, Amir Yari, Abdollah Javan
PURPOSE: To investigate the effect of neodymium-doped yttrium aluminum garnet (Nd:YAG) laser irradiation on the surface properties and bond strength of zirconia ceramics. MATERIALS AND METHODS: Forty-eight zirconia ceramic pieces (4 × 4 × 1 mm(3) ) were divided into four groups according to surface treatment as follows: two control groups (no treatment) for resin bonding (CRC) and glass ionomer (GI) bonding (CGC); two laser treatment groups (Nd:YAG irradiation, 3 W, 200 MJ, 10 Hz, 180 μs) for resin bonding (LRC) and GI bonding (LGC)...
September 5, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28866729/experimental-investigation-on-the-vascular-thermal-response-to-near-infrared-laser-pulses
#17
Dong Li, Bin Chen, Wenjuan Wu, Zhaoxia Ying
Port wine stains (PWS) are congenital vascular malformations that progressively darken and thicken with age. To improve the effect of laser therapy in clinical practice, thermal response of blood vessel to a 1064 nm Nd:YAG laser with controlled energy doses and pulse durations was evaluated using the dorsal skin chamber model. A total of 137 vessels with 30-300 μm diameters were selected from the dorsal skin of the mouse to match those capillaries in port wine stains. Experimental results showed that the thermal response of blood vessels to 1064 nm laser irradiation can be classified as follows: vessel dilation, coagulation, constriction with decreased diameter, complete constriction, hemorrhage, and collagen damage with increasing laser radiant exposure...
September 2, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28860693/long-term-visual-outcomes-and-patient-satisfaction-following-bilateral-implantation-of-trifocal-intraocular-lenses
#18
Sri Ganesh, Sheetal Brar, Archana Pawar
PURPOSE: To study the long-term visual and refractive outcomes and evaluate patient satisfaction after bilateral implantation of trifocal intraocular lenses (IOLs). SETTING: Nethradhama Superspeciality Eye Hospital, Bangalore. DESIGN: Prospective, nonrandomized study. METHODS: Eligible patients undergoing bilateral phacoemulsification with trifocal IOL implantation were included. Follow-up examinations were conducted at day 1, 1 week, 1 month, 6 months, and 12 months...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28858958/chronic-uveitis-following-neodymium-doped-yttrium-aluminum-garnet-laser-peripheral-iridotomy
#19
Amro Ali, Cyril Rosenfeld, Eric Rosenberg, Sansar Sharma, Thaddeus L Wandel
PURPOSE: Assessment of a chronic uveitis entity in nonuveitic patients following neodymium-doped yttrium aluminum garnet (Nd:YAG) laser peripheral iridotomy. METHODS: A 7-year retrospective observational case series of 5 patients that developed chronic uveitis following a Nd:YAG laser peripheral iridotomy treatment. RESULTS: Five eyes of 5 nonconsecutive patients had developed chronic anterior uveitis lasting >12 weeks. Four patients were female, with a mean age of 60...
August 30, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28856052/differentiation-of-fibrotic-liver-tissue-using-laser-induced-breakdown-spectroscopy
#20
E Teran-Hinojosa, H Sobral, C Sánchez-Pérez, A Pérez-García, N Alemán-García, J Hernández-Ruiz
Hepatic cirrhosis is a major cause of morbidity and mortality worldwide due to hepatitis C, alcoholism and fatty liver disease associated with obesity. Assessment of hepatic fibrosis relies in qualitative histological evaluation of biopsy samples. This method is time-consuming and depends on the histopathologists' interpretation. In the last decades, non-invasive techniques were developed to detect and monitor hepatic fibrosis. Laser-induced breakdown spectroscopy (LIBS) is a good candidate for a real-time, independent and fast technique to diagnose hepatic fibrosis...
August 1, 2017: Biomedical Optics Express
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