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Sodium hypochlorite

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https://www.readbyqxmd.com/read/28108022/evaluation-of-a-method-for-removing-cesium-and-reducing-the-volume-of-leaf-litter-from-broad-leaved-trees-contaminated-by-the-fukushima-daiichi-nuclear-accident-during-the-great-east-japan-earthquake
#1
Shigeki Harada, Mitsunori Yanagisawa
The town of Marumori in southern Miyagi Prefecture borders on Fukushima Prefecture, and following the accident at the Fukushima Daiichi nuclear power plant, there were concerns about cesium deposition in forested areas. One of the authors of this paper has continually surveyed leaf litter from the forested areas. As leaf litter may be a source of cesium contamination from the forest to downstream areas, we considered a simplified version of wet oxidation, a method previously presented by one of the authors of this study, as a technology to reduce leaf litter weight and cesium concentration, separating radioactive nuclides from non-radioactive ones, in leaf litter...
January 12, 2017: Chemosphere
https://www.readbyqxmd.com/read/28104321/the-influence-of-various-irrigants-on-the-accuracy-of-2-electronic-apex-locators-in-locating-simulated-root-perforations
#2
Demet Altunbaş, Alper Kuştarcı, Mustafa Toyoğlu
INTRODUCTION: The aim of this study was to assess the accuracy of the Dentaport ZX (Morita Co, Kyoto, Japan) and the Rootor (Meta Biomed, Cheongwon-gun, Korea) electronic apex locators (EALs) in detecting root perforations in dry conditions and in the presence of the following irrigation solutions: 2.5% sodium hypochlorite (NaOCl), 0.9% saline solution (NaCl), and 17% EDTA. METHODS: Twenty extracted, single-rooted human teeth were perforated artificially in the middle section...
January 16, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28099453/elimination-of-porcine-epidemic-diarrhea-virus-in-an-animal-feed-manufacturing-facility
#3
Anne R Huss, Loni L Schumacher, Roger A Cochrane, Elizabeth Poulsen, Jianfa Bai, Jason C Woodworth, Steve S Dritz, Charles R Stark, Cassandra K Jones
Porcine Epidemic Diarrhea Virus (PEDV) was the first virus of wide scale concern to be linked to possible transmission by livestock feed or ingredients. Measures to exclude pathogens, prevent cross-contamination, and actively reduce the pathogenic load of feed and ingredients are being developed. However, research thus far has focused on the role of chemicals or thermal treatment to reduce the RNA in the actual feedstuffs, and has not addressed potential residual contamination within the manufacturing facility that may lead to continuous contamination of finished feeds...
2017: PloS One
https://www.readbyqxmd.com/read/28079165/oriented-and-ordered-biomimetic-remineralization-of-the-surface-of-demineralized-dental-enamel-using-hap-acp-nanoparticles-guided-by-glycine
#4
Haorong Wang, Zuohui Xiao, Jie Yang, Danyang Lu, Anil Kishen, Yanqiu Li, Zhen Chen, Kehua Que, Qian Zhang, Xuliang Deng, Xiaoping Yang, Qing Cai, Ning Chen, Changhong Cong, Binbin Guan, Ting Li, Xu Zhang
Achieving oriented and ordered remineralization on the surface of demineralized dental enamel, thereby restoring the satisfactory mechanical properties approaching those of sound enamel, is still a challenge for dentists. To mimic the natural biomineralization approach for enamel remineralization, the biological process of enamel development proteins, such as amelogenin, was simulated in this study. In this work, carboxymethyl chitosan (CMC) conjugated with alendronate (ALN) was applied to stabilize amorphous calcium phosphate (ACP) to form CMC/ACP nanoparticles...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28068207/the-effect-of-diode-laser-on-planktonic-enterococcus-faecalis-in-infected-root-canals-in-an-ex-vivo-model
#5
Gilda Cretella, Carlo Lajolo, Raffaella Castagnola, Francesco Somma, MariaTeresa Inchingolo, Luca Marigo
OBJECTIVE: This study examined the bactericidal effect of diode laser irradiation against intracanal Enterococcus faecalis. METHODS AND MATERIALS: m total of 128 extracted single-rooted and single-canal teeth were treated with ProTaper instruments (Dentsply Maillefer, Ballaigues, Switzerland). A total of 120 root canals were inoculated with E. faecalis for 21 days, and the samples were randomly divided into five groups: Group 1 (n = 24) samples were irrigated with only saline solution (positive controls); Group 2 (n = 24) was treated with only 5...
January 9, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28050984/evaluation-of-bacteriological-profile-in-the-apical-root-segment-of-the-patients-with-primary-apical-periodontitis
#6
Aravind Tatikonda, N Sudheep, Krishna P Biswas, K Gowtham, Sudarshan Pujari, Padam Singh
INTRODUCTION: Apical periodontitis usually results from bacterial accumulation and contamination occurring in the root-canal system, and extending beyond the apical foramen to involve the periapical tissues. Literature has a paucity of the studies that stress on the division and analysis of the pulp canal segments. The reason for this disparity might be the technique used for collecting the samples from the pulp canals. Hence, we carried out the present study to evaluate the microbial flora in the apical part of the roots with necrotic pulp canals...
January 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28036109/developmental-effects-of-the-industrial-cooling-water-additives-morpholine-and-sodium-hypochlorite-on-lake-whitefish-coregonus-clupeaformis
#7
Christopher Thome, Charlotte Mitz, Shayenthiran Sreetharan, Charles Mitz, Christopher M Somers, Richard G Manzon, Douglas R Boreham, Joanna Y Wilson
Chemicals used in the prevention of corrosion and biofouling may be released into the environment via industrial cooling water discharges. We assessed the impacts of two commonly used chemicals, morpholine and sodium hypochlorite, on development in lake whitefish (Coregonus clupeaformis). Embryos were exposed chronically, beginning at fertilization or at the eyed stage. Acute 96 hour exposures were also examined at four development stages. Chronic morpholine resulted in an LC50 of 219 ± 54 mg/L when exposure began at fertilization and 674 ± 12 mg/L when exposure began at the eyed stage, suggesting that embryos are more sensitive earlier in development...
December 30, 2016: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28031968/tooth-tissue-engineering-tooth-decellularization-for-natural-scaffold
#8
Luciana Aparecida de Sousa Iwamoto, Monica Talarico Duailibi, Gerson Yoshinobu Iwamoto, Yara Juliano, Michel Silvio Duailibi, Francisco André Ossamu Tanaka, Silvio Eduardo Duailibi
AIM: Tissue engineering is a multidisciplinary science that aims to produce replacement organs and biological substitutes. One of the techniques involves decellularizing a biological organ without altering its structure. One challenge is how to demonstrate which method would be better for this process. METHODOLOGY: Fifty premolar teeth were divided into five groups: G1 (control): solution of 10% formaldehyde; G2: phosphate buffer saline (PBS), 28 g of tetrasodium ethylenediaminetetraacetic (EDTA), sodium hypochlorite 2...
June 2016: Future Science OA
https://www.readbyqxmd.com/read/28030544/seeking-clearer-recommendations-for-hand-hygiene-in-communities-facing-ebola-a-randomized-trial-investigating-the-impact-of-six-handwashing-methods-on-skin-irritation-and-dermatitis
#9
Marlene K Wolfe, Emma Wells, Brittany Mitro, Anne Marie Desmarais, Pamela Scheinman, Daniele Lantagne
: To prevent disease transmission, 0.05% chlorine solution is commonly recommended for handwashing in Ebola Treatment Units. In the 2014 West Africa outbreak this recommendation was widely extended to community settings, although many organizations recommend soap and hand sanitizer over chlorine. To evaluate skin irritation caused by frequent handwashing that may increase transmission risk in Ebola-affected communities, we conducted a randomized trial with 91 subjects who washed their hands 10 times a day for 28 days...
2016: PloS One
https://www.readbyqxmd.com/read/28027821/entrococcus-faecalis-elimination-in-root-canals-using-silver-nanoparticles-photodynamic-therapy-diode-laser-or-laser-activated-nanoparticles-an-in%C3%A2-vitro-study
#10
Farzaneh Afkhami, Saba Akbari, Nasim Chiniforush
INTRODUCTION: The aim of this study was to compare the efficacy of silver nanoparticles (AgNPs), an 810-nm diode laser (DL), conventional photodynamic therapy (PDT) with the use of indocyanine green (ICG) photosensitizer, and modified PDT with the use of AgNPs for the disinfection of root canals inoculated with Enterococcus faecalis. METHODS: The root canals of 65 extracted human single-rooted teeth were prepared, and E. faecalis was incubated in the root canals for 4 weeks...
December 24, 2016: Journal of Endodontics
https://www.readbyqxmd.com/read/28003634/inactivation-of-vibrio-parahaemolyticus-unattached-and-attached-to-a-solid-surface-in-ph-controlled-sodium-hypochlorite-solutions
#11
Kazuhiro Takahashi, Reiji Tanaka, Satoshi Fukuzaki
 The inactivation of Vibrio parahaemolyticus cells that were unattached or attached to a polyethylene terephthalate (PET) disc in pH-controlled sodium hypochlorite (NaOCl) solutions was studied under turbulent conditions. No significant desorption of attached cells occurred at the free available chlorine (FAC) concentrations from 0.1 to 1.0 mg/l. The number of viable cells was estimated by microbial calorimetry. The logarithmic relative reduction of viable cells was proportional to the product of the FAC concentration and time...
2016: Biocontrol Science
https://www.readbyqxmd.com/read/28001241/effect-of-edta-on-tgf-%C3%AE-1-released-from-the-dentin-matrix-and-its-influence-on-dental-pulp-stem-cell-migration
#12
Lidiany Freitas Gonçalves, Ana Paula Fernandes, Leopoldo Cosme-Silva, Fabio Antonio Colombo, Natália Silva Martins, Thais Marchini Oliveira, Tomaz Henrique Araujo, Vivien Thiemy Sakai
Bioactive molecules stored in dentin, such as transforming growth factor beta1 (TGF-b1), may be involved in the signaling events related to dental tissue repair. The authors conducted an in vitro evaluation of the amount of TGF-b1 released from dentin slices after treatment with 10% ethylenediaminetetraacetic acid (EDTA), 2.5% sodium hypochlorite (NaOCl) or phosphate-buffered saline (PBS), and the effect of this growth factor on stem cell migration from human exfoliated deciduous teeth (SHED). Sixty 1-mm-thick tooth slices were prepared with or without the predentin layer, and treated with either 10% EDTA for 1 minute, 2...
December 22, 2016: Brazilian Oral Research
https://www.readbyqxmd.com/read/28000644/comparative-analysis-of-cleaning-ability-of-three-nickel-titanium-rotary-systems-protaper-universal-k3-and-mtwo-an-in-vitro-scanning-electron-microscopic-study
#13
Ambar W Raut, Vijay Mantri, Aparna Palekar, Rupal Gadodia, Shubham Kala, Radha A Raut
BACKGROUND: Endodontic instruments including the nickel-titanium (NiTi) instruments produce debris and smear layer during instrumentation. The study was carried out to evaluate and compare the cleaning effectiveness of root canal preparation using three different rotary NiTi instrumentation systems - ProTaper Universal, K3 and Mtwo by means of scanning electron microscopy (SEM). METHODS: Thirty-six freshly extracted permanent mandibular molars were randomly divided into four groups: ProTaper Universal, K3, Mtwo system and control group...
October 2016: Nigerian Postgraduate Medical Journal
https://www.readbyqxmd.com/read/27994408/comparative-evaluation-of-efficacy-of-ethylenediaminetetraacetic-acid-maleic-acid-and-dimercaptosuccinic-acid-against-the-combination-of-these-with-sodium-hypochlorite-for-removal-of-smear-layer-an-in-vitro-scanning-electron-microscope-study
#14
Rishikesh Meshram, Nikhil Sathawane, Roshan Samuel, Narayan Gunaji Jibhkate, Hitesh Gyanani, Sanjay Patil
CONTEXT: The effect of dimercaptosuccinic acid (DMSA) and maleic acid (MA) when used alone on smear layer has been evaluated with mixed results, but their effect when combined with sodium hypochlorite (NaOCl) has not been studied. AIM: To compare the effectiveness of ethylenediaminetetraacetic acid, MA, and DMSA against the combination of these with NaOCl in the removal of smear layer. SETTINGS AND DESIGN: n = 4pq/L(2) q = 1 - p p = Incident rate L = Allowable error...
October 2016: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/27991952/enhancement-of-hevea-brasiliensis-properties-through-chemical-application
#15
Roszaini Kadir, Mohd D Jantan
The effects of four different types of bleaching agents (hydrogen peroxide, sodium hypochlorite, sodium chlorite and oxalic acid) mixed together with 2% boron-based preservative (Celbor SP) were studied on green sawn rubberwood. Two concentration levels (1% and 2%) of were used. Whitish values (W) and colour changes (ΔE) of sawn rubberwood were assessed before and after chemical treatment using a colour meter. Preliminary observation indicated that timber treated with 1% and 2% hydrogen peroxide produced better and more homogeneous colour properties...
October 2016: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/27987956/chemical-treatment-and-characterization-of-soybean-straw-and-soybean-protein-isolate-straw-composite-films
#16
Milena Martelli-Tosi, Odílio B G Assis, Natália C Silva, Bruno S Esposto, Maria Alice Martins, Delia R Tapia-Blácido
This work investigated changes in the chemical composition and structure of soybean straw (SS) treated with alkali (NaOH 5% and 17.5%) and bleached with hydrogen peroxide (H2O2) or sodium hypochlorite (NaOCl). Removal of the amorphous constituents increased the degree of crystallinity and the content of cellulose fibers particularly after reaction with high concentrations of alkali. Treatment with NaOH 17.5% contributed to the allomorph transition from cellulose I to II regardless of the bleaching agent, but H2O2 as bleaching agent promoted more effective delignification...
February 10, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/27986099/sodium-hypochlorite-accident-a-systematic-review
#17
REVIEW
Maud Guivarc'h, Ugo Ordioni, Hany Mohamed Aly Ahmed, Stephen Cohen, Jean-Hugues Catherine, Frédéric Bukiet
INTRODUCTION: Sodium hypochlorite (NaOCl) extrusion beyond the apex, also known as "a hypochlorite accident," is a well-known complication that seldom occurs during root canal therapy. These "accidents" have been the subject of several case reports published over the years. Until now, no publication has addressed the global synthesis of the general and clinical data related to NaOCl extrusion. The main purpose of this article was to conduct a systematic review of previously published case reports to identify, synthesize, and present a critical analysis of the available data...
January 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/27982235/evaluation-of-different-passive-ultrasonic-irrigation-protocols-on-the-removal-of-dentinal-debris-from-artificial-grooves
#18
Rodrigo Ricci Vivan, Jussaro Alves Duque, Murilo Priori Alcalde, Marcus Vinicius Reis Só, Clóvis Monteiro Bramante, Marco Antonio Hungaro Duarte
The aim of this study was to evaluate the influence of different passive ultrasonic irrigation protocols on the removal of debris in artificially created grooves in the cervical, middle and apical root thirds. Forty extracted bovine incisor roots were instrumented to 1 mm of the root apex with a R50 Reciproc instrument and irrigated with 2.5% sodium hypochlorite. The roots were then inserted in a muffle and cleaved into two hemisections. Grooves (3-mm long) were done at 2, 7 and 12 mm from the root apex in one hemisection and filled with dentinal debris...
September 2016: Brazilian Dental Journal
https://www.readbyqxmd.com/read/27982182/alkaline-peroxides-versus-sodium-hypochlorite-for-removing-denture-biofilm-a-crossover-randomized-trial
#19
Amanda Peracini, Rômulo Rocha Regis, Raphael Freitas de Souza, Valéria Oliveira Pagnano, Cláudia Helena Lovato da Silva, Helena de Freitas Oliveira Paranhos
This study evaluated the efficacy of cleanser solutions on denture biofilm removal by a crossover randomized clinical trial. Thirty two edentulous patients were instructed to brush their dentures (specific brush and liquid soap) three times a day (after breakfast, lunch and dinner) and to soak them (≥ 8 h) in: (C) control -water; (AP): alkaline peroxide; or (SH) 0.5% sodium hypochlorite. Each solution was used for 21 days (three cycles of 7 days). At the end of each cycle, the inner surfaces of maxillary dentures were disclosed (1% neutral red) and photographed (HX1 - Sony)...
October 2016: Brazilian Dental Journal
https://www.readbyqxmd.com/read/27979128/molecular-structure-functionality-and-applications-of-oxidized-starches-a-review
#20
REVIEW
Nathan Levien Vanier, Shanise Lisie Mello El Halal, Alvaro Renato Guerra Dias, Elessandra da Rosa Zavareze
During oxidation, the hydroxyl groups of starch molecules are first oxidized to carbonyl groups, then to carboxyl groups. The contents of the carbonyl and carboxyl groups in a starch molecule therefore indicate the extent of starch oxidation. The mechanisms of starch oxidation with different oxidizing agents, including sodium hypochlorite, hydrogen peroxide, ozone and sodium periodate, are described in this review. The effects of these oxidizing agents on the molecular, physicochemical, thermal, pasting and morphological properties of starch are described as well...
April 15, 2017: Food Chemistry
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