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https://www.readbyqxmd.com/read/28731572/endoscopic-surgical-technique-for-benign-fibrotic-strictures-of-the-upper-esophageal-sphincter
#1
Shun-Ichi Chitose, Kiminori Sato, Mioko Fukahori, Sachiyo Hamakawa, Akari Koga, Shintaro Sueyoshi, Hirohito Umeno
A 43-year-old man with complaints of increased difficulty of swallowing and weight loss underwent videofluorographic examination of swallowing, which revealed severely reduced cricopharyngeal opening. Endoscopic cricopharyngeal myotomy was performed using a modified technique (mECPM). A benign fibrotic stricture of the upper esophageal sphincter (UES) was identified under visualization of a distending operating laryngoscope. A vertical midline incision in the strictured mucosa and submucosal resection of the cricopharyngeal muscle were performed using a CO2 laser...
July 21, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28731320/fabrication-of-nanostructured-omniphobic-and-superomniphobic-surfaces-with-inexpensive-co2-laser-engraver
#2
Anudeep Pendurthi, Sanli Movafaghi, Wei Wang, Soran Shadman, Azer Yalin, Arun K Kota
Superomniphobic surfaces (i.e. surfaces that are extremely repellent to both high surface tension liquids like water and low surface tension liquid like oils and alcohols) can be fabricated through a combination of surface chemistry that imparts low solid surface energy with a re-entrant surface texture. Recently, surface texturing with lasers has received significant attention because laser texturing is scalable, solvent-free, and can produce a monolithic texture on virtually any material. In this work, we fabricated nanostructured omniphobic and superomniphobic surfaces with a variety of materials using a simple, inexpensive and commercially available CO2 laser engraver...
July 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28714203/posterior-cordotomy-in-bilateral-vocal-cord-paralysis-using-monopolar-microelectrodes-and-radiofrequency-in-18-patients
#3
J Basterra, Y Castillo-Lopez, R Reboll, E Zapater, C Olavarria, F Krause, R Hernandez, M Torres, F Tocornal
Posterior cordotomy is an option in the surgical treatment of bilateral vocal cord paralysis in adduction. We present results obtained in 18 patients with bilateral vocal cord paralysis in adduction treated using microelectrodes terminal with tips in several angles, and a radiofrequency generator from 2008 to 2013. The functional outcome was evaluated using postoperative spirometry, the decannulation time, and swallowing. All patients except one were successfully decannulated and showed an increase in mid-inspiratory flow rates...
July 17, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28710539/-treatment-outcomes-of-recurrent-respiratory-papillomatosis-retrospective-analysis-of-juvenile-and-adult-cases-german-version
#4
V-A Papaioannou, A Lux, S Voigt-Zimmermann, C Arens
BACKGROUND: Recurrent respiratory papillomatosis (RRP) is a rare, chronic disease of viral etiology which is characterized by multiple, recurrent growth of papillomas in the aerodigestive tract. MATERIALS AND METHODS: The surgical outcomes and the recurrence rates of 106 patients with RRP of the larynx were analyzed. The patients were treated at the University of Magdeburg between 1983 and 2014. The surgical outcomes of conventional and laser surgery regarding time to relapse and complications were compared...
July 14, 2017: HNO
https://www.readbyqxmd.com/read/28704897/comparison-of-free-beam-and-fiber-type-co2-laser-delivery-systems-in-stapes-surgery
#5
Mun Young Chang, Hyun Seok Choi, Sang-Youp Lee, Ja-Won Koo
BACKGROUND AND OBJECTIVES: A free-beam-type CO2 laser, which use a micromanipulator mounted on a microscope as the delivery system, has the merit of not being affected by hand tremor at the time of shooting. However, this delivery system has several disadvantages, including a restricted operation range and a risk of incorrect focusing. A fiber-type CO2 laser uses a hand-held delivery system and has the opposite merits and demerits. We compared the results of stapes surgery with free-beam and fiber type delivery systems...
July 2017: Journal of Audiology & Otology
https://www.readbyqxmd.com/read/28702973/clinical-and-histological-changes-in-hidradenitis-suppurativa-following-1064-nm-nd-yag-intralesional-laser-treatment
#6
N Zerbinati, E D'Este, L Ini, A Baruffato, V Premoli, A Calligaro, M Paulli
Hidradenitis Suppurativa (HS) is recently attracting much attention and awareness, often because it is misdiagnosed for years, restricting the therapeutic options. Moreover, this pathology arises in areas such as the inguinal region, that may cause embarrassment in young patients. Wrong diagnosis and delay in appropriate treatments lead to an exacerbation of the symptoms and a progression of the disease, which at the last stage can only be managed through extensive surgical excisions, ablation and vaporization of nodules with CO2 laser systems or aggressive chemotherapies such as anti-TNF-alpha like adalimumab (Humira®-AbbVie Inc...
July 13, 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28702841/comparison-of-ketamine-and-ketofol-for-deep-sedation-and-analgesia-in-children-undergoing-laser-procedure
#7
Marija Stevic, Nina Ristic, Ivana Budic, Nebojsa Ladjevic, Branislav Trifunovic, Ivan Rakic, Marko Majstorovic, Ivana Burazor, Dusica Simic
The aim of our study was to research and evaluate cardiovascular and respiratory stability, clinical efficacy, and safety of two different anesthetic agents in pediatric patients who underwent Pulse dye (wavelength 595 nm, pulse duration 0-40 ms, power 0-40 J) and CO2 (wavelength 10,600 nm, intensity-fraxel mod with SX index 4 to 8, power 0-30 W) laser procedure. This prospective non-blinded study included 203 pediatric patients ASA I-II, aged between 1 month and 12 years who underwent short-term procedural sedation and analgesia for the laser procedure...
July 12, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28702061/the-effect-of-surface-treatment-with-a-fractional-carbon-dioxide-laser-on-shear-bond-strength-of-resin-cement-to-a-lithium-disilicate-based-ceramic
#8
Farzaneh Ahrari, Alireza Boruziniat, Hamideh Sadat Mohammadipour, Mehrnoosh Alirezaei
BACKGROUND: This study investigated the impact of different surface treatments, including fractional carbon dioxide (CO2) laser on shear bond strength (SBS) of resin cement to lithium disilicate ceramic. MATERIALS AND METHODS: In this in vitro study, 72 blocks of IPS e.max CAD ceramic were randomly divided into six groups in terms of treatment (n = 12). Group 1 underwent etching with 9.6% hydrofluoric (HF) acid, whereas group 2 was subjected to air abrasion with aluminum oxide particles...
May 2017: Dental Research Journal
https://www.readbyqxmd.com/read/28699676/influence-of-multi-wavelength-laser-irradiation-of-enamel-and-dentin-surfaces-at-0-355-2-94-and-9-4%C3%A2-%C3%AE-m-on-surface-morphology-permeability-and-acid-resistance
#9
Nai-Yuan N Chang, Jamison M Jew, Jacob C Simon, Kenneth H Chen, Robert C Lee, William A Fried, Jinny Cho, Cynthia L Darling, Daniel Fried
OBJECTIVE: Ultraviolet (UV) and infrared (IR) lasers can be used to specifically target protein, water, and mineral, respectively, in dental hard tissues to produce varying changes in surface morphology, permeability, reflectivity, and acid resistance. The purpose of this study was to explore the influence of laser irradiation and topical fluoride application on the surface morphology, permeability, reflectivity, and acid resistance of enamel and dentin to shed light on the mechanism of interaction and develop more effective treatments...
July 12, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28692353/fractional-carbon-dioxide-co2-laser-combined-with-topical-tretinoin-for-the-treatment-of-different-forms-of-cystic-acne
#10
Carmela Pestoni Porvén, Vanessa Vieira Dos Santos, Jesus Del Pozo Losada
Nodulocystic acne is prone to scarring and difficult to treat with treatments other than oral isotretinoin. The aim of this article is to discuss the role of a single session of a fractional CO2 laser combined with a topical treatment with a tretinoin and antibiotic gel for a month as a successful treatment to improve nodulocystic acne and chronic microcystic acne. Two cases were involved: the first with nodulocystic acne lesions that persisted after oral retinoids and the second with chronic microcystic acne resistant to topical treatments...
July 10, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/28689887/co2-laser-cauterization-approach-to-congenital-pyriform-sinus-fistula
#11
Shengcai Wang, Yuzhu He, Yamei Zhang, Jie Zhang, Rahul Shah, Guoshuang Feng, Xiaodan Li, Wentong Ge, Yuanhu Liu, Yongli Guo, Haihong Liu, Jun Tai, Xin Ni
OBJECTIVE: To evaluate the efficacy of CO2 laser cauterization with suspension microlaryngoscopy as a definitive surgical treatment for pediatric Congenital Pyriform Sinus Fistula (CPSF). MATERIAL AND METHODS: This is a cohort retrospective study. Thyroid function and cervical ultrasonography examinations were performed before operation. Enhanced magnetic resonance imaging (MRI) was performed on patients with a repeated infection (≥2 times) and/or if they had a prior open surgery...
June 28, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28688405/ion-ion-coincidence-imaging-at-high-event-rate-using-an-in-vacuum-pixel-detector
#12
Jingming Long, Federico J Furch, Judith Durá, Anton S Tremsin, John Vallerga, Claus Peter Schulz, Arnaud Rouzée, Marc J J Vrakking
A new ion-ion coincidence imaging spectrometer based on a pixelated complementary metal-oxide-semiconductor detector has been developed for the investigation of molecular ionization and fragmentation processes in strong laser fields. Used as a part of a velocity map imaging spectrometer, the detection system is comprised of a set of microchannel plates and a Timepix detector. A fast time-to-digital converter (TDC) is used to enhance the ion time-of-flight resolution by correlating timestamps registered separately by the Timepix detector and the TDC...
July 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28669425/-treatment-of-hailey-hailey-disease-with-botulinic-toxin-a-retrospective-study-of-8-cases
#13
L Dousset, A Pham-Ledard, M-S Doutre, M Beylot-Barry, O Cogrel
BACKGROUND: Hailey-Hailey disease (HHD) is characterised by episodes of weeping erythematous lesions, particularly in areas subject to friction or maceration. Treatment is complex. The value of botulinum toxin has been demonstrated in several studies and in individual cases. AIM: To report clinical and progressive data for 8 patients treated for HHD with injections of botulinum toxin A (BTX-A), following the failure of several other therapeutic approaches. PATIENTS AND METHODS: Eight patients (three males and five females), of median age 52...
June 29, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28668063/highly-accurate-intensity-factors-of-pure-co2-lines-near-2-%C3%AE-m
#14
T A Odintsova, E Fasci, L Moretti, E J Zak, O L Polyansky, J Tennyson, L Gianfrani, A Castrillo
Line intensities for carbon dioxide are measured with a novel spectroscopic approach, assisted by an optical frequency comb synthesizer for frequency calibration purposes. The main feature of the spectrometer consists in the exploitation of optical feedback from a V-shaped high-finesse optical resonator to effectively narrow a distributed feedback diode laser at the wavelength of 2 μm. Laser-gas interaction takes place inside an isothermal cell, which is placed on the transmission from the cavity. High quality, self-calibrated, absorption spectra are observed in pure CO2 samples at different gas pressures, in coincidence with three lines of the R-branch of the ν1 + 2ν2 + ν3 band...
June 28, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28667993/experimental-percolation-studies-of-random-networks
#15
A Feinerman, J Weddell
This report establishes an experimental method of studying electrically percolating networks at a higher resolution than previously implemented. This method measures the current across a conductive sheet as a function of time as elliptical pores are cut into the sheet. This is done utilizing a Universal Laser System X2-600 100 W CO2 laser system with a 76 × 46 cm(2) field and 394 dpc (dots/cm) resolution. This laser can cut a random system of elliptical pores into a conductive sheet with a potential voltage applied across it and measures the current versus time...
June 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28665779/a-new-laser-processing-strategy-for-improving-enamel-erosion-resistance
#16
M Esteves-Oliveira, S Wollgarten, S Liebegall, P Jansen, M Bilandzic, H Meyer-Lueckel, H Fischer, J Stollenwerk, R Poprawe
In the present study, a new automatic laser-processing strategy allowing standardized irradiation of natural tooth areas was investigated. The objective was to find a combination of laser parameters that could cause over a 600°C temperature increase at the enamel surface while not damaging enamel, avoiding temperature change above 5.5°C in the pulp and increasing enamel erosion resistance. Seventy-seven bovine enamel samples were randomly divided into 6 laser groups and 1 negative control (C/no treatment/ n = 11)...
June 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28662857/glass-ceramic-coating-material-for-the-co2-laser-based-sintering-of-thin-films-as-caries-and-erosion-protection
#17
Marin Dean Bilandžić, Susanne Wollgarten, Jochen Stollenwerk, Reinhart Poprawe, Marcella Esteves-Oliveira, Horst Fischer
OBJECTIVES: The established method of fissure-sealing using polymeric coating materials exhibits limitations on the long-term. Here, we present a novel technique with the potential to protect susceptible teeth against caries and erosion. We hypothesized that a tailored glass-ceramic material could be sprayed onto enamel-like substrates to create superior adhesion properties after sintering by a CO2 laser beam. METHODS: A powdered dental glass-ceramic material from the system SiO2-Na2O-K2O-CaO-Al2O3-MgO was adjusted with individual properties suitable for a spray coating process...
June 26, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28662298/advanced-film-forming-gel-formula-vs-spring-thermal-water-and-white-petrolatum-as-primary-dressings-after-full-face-ablative-fractional-co2-laser-resurfacing-a-comparative-split-face-pilot-study
#18
Leonardo Marini
BACKGROUND: Aesthetically pleasing results and fast, uneventful recovery are highly desirable after rejuvenating ablative laser procedures. Wound dressings following ablative laser procedures should ideally improve and optimize the wound healing environment. OBJECTIVE: The purpose of this comparative split face, single blinded, prospective observational study was to assess the efficacy and acceptability of two primary wound dressings immediately after a full face fractional CO2 laser resurfacing procedure...
June 29, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28658356/does-the-co2-laser-reduce-bond-strength-in-different-types-of-ceramic-brackets
#19
Fábio Lourenço Romano, Giovanna Pessoti, Rodrigo Galo, Jaciara Miranda Gomes-Silva, Marília Pacífico Lucisano, Maria Cristina Borsatto, Paulo Nelson-Filho
OBJECTIVE: The aim of this study was to assess in vitro the influence of the CO2 laser and of the type of ceramic bracket on the shear bond strength (SBS) to enamel. METHODS: A total of 60 enamel test surfaces were obtained from bovine incisors and randomly assigned to two groups, according to the ceramic bracket used: Allure (A); Transcend (T). Each group was divided into 2 subgroups (n = 15): L, laser (10W, 3s); C, no laser, or control. Twenty-four hours after the bonding protocol using Transbond XT, SBS was tested at a crosshead speed of 0...
March 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28652729/nir-responsive-liposomal-system-for-rapid-release-of-drugs-in-cancer-therapy
#20
Ming-Mao Chen, Yuan-Yuan Liu, Guang-Hao Su, Fei-Fei Song, Yan Liu, Qi-Qing Zhang
To design a rapid release liposomal system for cancer therapy, a NIR responsive bubble-generating thermosensitive liposome (BTSL) system combined with photothermal agent (Cypate), doxorubicin (DOX), and NH4HCO3 was developed. Cypate/DOX-BTSL exhibited a good aqueous stability, photostability, and photothermal effect. In vitro release suggested that the amounts of DOX released from BTSL were obviously higher than that of (NH4)2SO4 liposomes at 42°C. After NIR irradiation, the hyperthermic temperature induced by Cypate led to the decomposition of NH4HCO3 and the generation of a large number of CO2 bubbles, triggering a rapid release of drugs...
2017: International Journal of Nanomedicine
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