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https://www.readbyqxmd.com/read/28642564/remineralisation-and-arresting-caries-in-children-with-topical-fluorides
#1
Neeraj Gugnani, Shalini Gugnani
Data sourcesThe Cochrane Library, PubMed, Embase and the ISI Web of Science.Study selectionEnglish language clinical trials in children with outcome measures including the remineralisation or arresting effect of caries by professional fluoride treatment were considered.Data extraction and synthesisTwo reviewers screened the studies and assessed risk of bias. Random effects meta-analysis was conducted.ResultsSeventeen studies were included, ten focused on remineralisation, seven on arresting carious lesions...
June 23, 2017: Evidence-based Dentistry
https://www.readbyqxmd.com/read/28544043/identification-of-v-type-nerve-agents-in-vapor-samples-using-a-field-portable-capillary-gas-chromatography-membrane-interfaced-electron-ionization-quadrupole-mass-spectrometry-instrument-with-tri-bed-concentrator-and-fluoridating-conversion-tube
#2
Yasuhiko Ohrui, Tomoki Nagoya, Naoko Kurimata, Manabu Sodeyama, Yasuo Seto
A field-portable gas chromatography-mass spectrometry (GC-MS) system (Hapsite ER) was evaluated for the detection of nonvolatile V-type nerve agents (VX and Russian VX (RVX)) in the vapor phase. The Hapsite ER system consists of a Tri-Bed concentrator gas sampler, a nonpolar low thermal-mass capillary gas chromatography column and a hydrophobic membrane-interfaced electron ionization quadrupole mass spectrometer evacuated by a non-evaporative getter pump. The GC-MS system was attached to a VX-G fluoridating conversion tube containing silver nitrate and potassium fluoride...
May 25, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28542863/mechanisms-of-silver-diamine-fluoride-on-arresting-caries-a-literature-review
#3
REVIEW
Irene Shuping Zhao, Sherry Shiqian Gao, Noriko Hiraishi, Michael Francis Burrow, Duangporn Duangthip, May Lei Mei, Edward Chin-Man Lo, Chun-Hung Chu
OBJECTIVE: To review the evidence regarding the mechanisms of silver diamine fluoride (SDF) for arresting caries. METHODS: A literature search was conducted using the keywords silver diamine fluoride, and its alternative names, in seven databases: PubMed, Embase and Scopus (English); China National Knowledge Infrastructure (Chinese); Bilioteca Virtual em Saude (Portuguese); Biblioteca Virtual en Salud Espana (Spanish); and Ichushi-Web (Japanese). The titles and abstracts were screened...
May 21, 2017: International Dental Journal
https://www.readbyqxmd.com/read/28537584/asymmetric-silver-catalysed-intermolecular-bromotrifluoromethoxylation-of-alkenes-with-a-new-trifluoromethoxylation-reagent
#4
Shuo Guo, Fei Cong, Rui Guo, Liang Wang, Pingping Tang
Fluorinated organic compounds are becoming increasingly important in pharmaceuticals, agrochemicals and materials science. The introduction of trifluoromethoxy groups into new drugs and agrochemicals has attracted much attention due to their strongly electron-withdrawing nature and high lipophilicity. However, synthesis of trifluoromethoxylated organic molecules is difficult owing to the decomposition of trifluoromethoxide anion and β-fluoride elimination from transition-metal-trifluoromethoxide complexes, and no catalytic enantioselective trifluoromethoxylation reaction has been reported until now...
June 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28521107/formation-of-fluorohydroxyapatite-with-silver-diamine-fluoride
#5
M L Mei, F Nudelman, B Marzec, J M Walker, E C M Lo, A W Walls, C H Chu
Silver diamine fluoride (SDF) is found to promote remineralization and harden the carious lesion. Hydroxyapatite crystallization is a crucial process in remineralization; however, the role of SDF in crystal formation is unknown. We designed an in vitro experiment with calcium phosphate with different SDF concentrations (0.38, 1.52, 2.66, 3.80 mg/mL) to investigate the effect of this additive on the nucleation and growth of apatite crystals. Two control groups were also prepared-calcium phosphate (CaCl2·2H2O + K2HPO4 in buffer solution) and SDF (Ag[NH3]2F in buffer solution)...
May 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28499178/degradation-of-gaseous-formaldehyde-via-visible-light-photocatalysis-using-multi-element-doped-titania-nanoparticles
#6
Maricris T Laciste, Mark Daniel G de Luna, Nolan C Tolosa, Ming-Chun Lu
This study developed a modified titanium dioxide photocatalyst doped with multi-element synthesized via sol-gel process to productize a novel photocatalyst. The study includes degradation of gaseous formaldehyde under visible light using the synthesized novel titanium dioxide photocatalyst. Varying molar ratios from 0 to 2 percent (%mole in titanium dioxide) of ammonium fluoride, silver nitrate and sodium tungstate as dopant precursors for nitrogen, fluorine, silver and tungsten were used. Photodegradation of gaseous formaldehyde was examined on glass tubular reactors illuminated with blue light emitting diodes (LEDs) using immobilized photocatalyst...
May 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/28485841/prediction-of-extremely-strong-antiferromagnetic-superexchange-in-silver-ii-fluorides-challenging-the-oxocuprates-ii
#7
Dominik Kurzydłowski, Wojciech Grochala
Strong magnetic coupling between the spins of unpaired electrons is an essential ingredient of many fascinating physical phenomena. Here we report calculations using the hybrid HSE06 functional of magnetic superexchange constants, J, for a series of low-dimensional Cu(II) and Ag(II) binary and ternary systems with fluoride and oxide ligands. The calculations correctly reproduce the sign and size of the magnetic superexchange constants for prototypical antiferromagnetic (AFM) 1D (J1D ) and 2D (J2D ) systems, while overestimating the absolute values of J by about 11 %...
May 9, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28475081/effectiveness-of-silver-diamine-fluoride-in-caries-prevention-and-arrest-a-systematic-literature-review
#8
Violeta Contreras, Milagros J Toro, Augusto R Elías-Boneta, Angeliz Encarnación-Burgos
This study aimed to evaluate the scientific evidence regarding the effectiveness of silver diamine fluoride (SDF) in preventing and arresting caries in the primary dentition and permanent first molars. A systematic review (SR) was performed by 2 independent reviewers using 3 electronic databases (PubMed, ScienceDirect, and Scopus). The database search employed the following key words: "topical fluorides" AND "children" AND "clinical trials"; "topical fluorides" OR "silver diamine fluoride" AND "randomized controlled trial"; "silver diamine fluoride" AND "children" OR "primary dentition" AND "tooth decay"; "silver diamine fluoride" OR "sodium fluoride varnish" AND "early childhood caries"; and "silver diamine fluoride" AND "children"...
May 2017: General Dentistry
https://www.readbyqxmd.com/read/28457477/parental-perceptions-and-acceptance-of-silver-diamine-fluoride-staining
#9
Yasmi O Crystal, Malvin N Janal, Dylan S Hamilton, Richard Niederman
BACKGROUND: The caries arrest that can be achieved by using silver diamine fluoride (SDF) offers a minimally invasive and inexpensive alternative to traditional restorative caries treatment. The authors evaluated how the dentinal staining that is associated with SDF influences the acceptance of this treatment among parents of young children in the New York City metropolitan area. METHODS: The authors invited the parents of children who had experienced dental caries and who had appointments at the New York University Pediatric Dentistry Clinic and at several private clinics in New Jersey to participate in a Web-based survey designed to assess parents' demographics, perceptions of photographs of SDF-treated carious teeth, and acceptability of treatment in different behavior management scenarios...
April 27, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28453247/building-an-electronic-bridge-via-ag-decoration-to-enhance-kinetics-of-iron-fluoride-cathode-in-lithium-ion-batteries
#10
Yu Li, Xingzhen Zhou, Ying Bai, Guanghai Chen, Zhaohua Wang, Hui Li, Feng Wu, Chuan Wu
As a typical multielectron cathode material for lithium-ion batteries, iron fluoride (FeF3) and its analogues suffer from poor electronic conductivity and low actual specific capacity. Herein, we introduce Ag nanoparticles by silver mirror reaction into the FeF3·0.33H2O cathode to build the electronic bridge between the solid (active materials) and liquid (electrolyte) interface. The crystal structures of as-prepared samples are characterized by X-ray diffraction and Rietveld refinement. Moreover, the density of states of FeF3·0...
June 5, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28418413/-how-useful-is-restorative-care-in-the-primary-dentition
#11
J E Frencken
Too many children develop carious lesions and many such lesions progress into a dentine carious lesion. In 2010, the percentage of dentine carious lesions in the primary dentition of 6-year-old Dutch children that were restored was less than 50 per cent. Owing to research, the necessity to restore dentine carious lesions routinely has been called into question. Current understanding of cariologic principles point in the direction of a causal treatment that is based on cleaning accessible dentine carious cavities and those that can be made accessible, possibly supported by the application of silver diamine fluoride...
April 2017: Nederlands Tijdschrift Voor Tandheelkunde
https://www.readbyqxmd.com/read/28387288/limited-evidence-suggesting-silver-diamine-fluoride-may-arrest-dental-caries-in-children
#12
(no author information available yet)
'...this SR and meta-analysis did not provide the clinicians with high-quality evidence for using SDF in managing caries compared with no treatment or other caries management interventions.'
April 7, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28387277/jucsf-protocol-for-caries-arrest-using-silver-diamine-fluoride-rationale-indications-and-consent
#13
(no author information available yet)
A 400-fold safety margin.
April 7, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28370917/palladium-catalyzed-fluorosulfonylvinylation-of-organic-iodides
#14
Gao-Feng Zha, Qinheng Zheng, Jing Leng, Peng Wu, Hua-Li Qin, K Barry Sharpless
A palladium-catalyzed fluorosulfonylvinylation reaction of organic iodides is described. Catalytic Pd(OAc)2 with a stoichiometric amount of silver(I) trifluoroacetate enables the coupling process between either an (hetero)aryl or alkenyl iodide with ethenesulfonyl fluoride (ESF). The method is demonstrated in the successful syntheses of eighty-eight otherwise difficult to access compounds, in up to 99 % yields, including the unprecedented 2-heteroarylethenesulfonyl fluorides and 1,3-dienylsulfonyl fluorides...
March 29, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28332192/arresting-simulated-dentine-caries-with-adjunctive-application-of-silver-nitrate-solution-and-sodium-fluoride-varnish-an-in%C3%A2-vitro-study
#15
Irene Shuping Zhao, May Lei Mei, Quan-Li Li, Edward Chin Man Lo, Chun-Hung Chu
PURPOSE: The aim of this in vitro study was to assess the ability of silver nitrate solution, followed by sodium fluoride varnish, to arrest caries. METHODS: Dentine slices were prepared and demineralised. Each slice was cut into three specimens for three groups (SF, SDF and W). Specimens of the SF group received topical application of 25% silver nitrate solution followed by 5% sodium fluoride varnish. The SDF group received topical application of 38% silver diamine fluoride solution (positive control)...
March 22, 2017: International Dental Journal
https://www.readbyqxmd.com/read/28281957/effects-of-remineralization-agents-on-artificial-carious-lesions
#16
Selcuk Savas, Ebru Kucukyilmaz, Esra Uzer Celik
PURPOSE: The purpose of this study was to evaluate the remineralization potentials of different agents on demineralized enamel surfaces. METHODS: Four hundred and sixty extracted human molars with artificial carious lesions were divided into six groups: (1) control; (2) acidulated phosphate fluoride (APF); (3) Curodont Repair (CR); (4) silver diamine fluoride (SDF); (5) ammonium hexafluorosilicate (SiF); and (6) SiF plus cetylpiridinium chloride (SiF+CPC). They were subdivided according to immersion periods (seven out of 30 days)...
November 15, 2016: Pediatric Dentistry
https://www.readbyqxmd.com/read/28281949/silver-diamine-fluoride-treatment-considerations-in-children-s-caries-management
#17
Yasmi O Crystal, Richard Niederman
By arresting and preventing caries, silver diamine fluoride (SDF) offers an alternate care path for patients for whom traditional restorative treatment is not immediately available. Current data from controlled clinical trials encompassing more than 3,900 children indicate that biannual application of SDF reduces progression of current caries and risk of subsequent caries. The purpose of this paper was to highlight the best evidence from systematic reviews and clinical trials for clinicians to consider the benefits, risks, and limitations as they implement silver diamine fluoride therapy on young children...
November 15, 2016: Pediatric Dentistry
https://www.readbyqxmd.com/read/28178188/effect-of-silver-diamine-fluoride-and-potassium-iodide-treatment-on-secondary-caries-prevention-and-tooth-discolouration-in-cervical-glass-ionomer-cement-restoration
#18
Irene Shuping Zhao, May Lei Mei, Michael F Burrow, Edward Chin-Man Lo, Chun-Hung Chu
This study investigated the effect of silver diamine fluoride (SDF) and potassium iodide (KI) treatment on secondary caries prevention and tooth discolouration in glass ionomer cement (GIC) restoration. Cervical GIC restorations were done on 30 premolars with: Group 1, SDF + KI; Group 2, SDF (positive control); Group 3, no treatment (negative control). After cariogenic biofilm challenge, the demineralisation of dentine adjacent to the restoration was evaluated using micro-computed tomography (micro-CT) and Fourier transform infrared (FTIR) spectroscopy...
February 6, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28129798/limited-evidence-suggesting-silver-diamine-fluoride-may-arrest-dental-caries-in-children
#19
Linda L Cheng
No abstract text is available yet for this article.
February 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28066987/photothermal-membrane-distillation-for-seawater-desalination
#20
Antonio Politano, Pietro Argurio, Gianluca Di Profio, Vanna Sanna, Anna Cupolillo, Sudip Chakraborty, Hassan A Arafat, Efrem Curcio
Thermoplasmonic effects notably improve the efficiency of vacuum membrane distillation, an economically sustainable tool for high-quality seawater desalination. Poly(vinylidene fluoride) (PVDF) membranes filled with spherical silver nanoparticles are used, whose size is tuned for the aim. With the addition of plasmonic nanoparticles in the membrane, the transmembrane flux increases by 11 times, and, moreover, the temperature at the membrane interface is higher than bulk temperature.
January 2017: Advanced Materials
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