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Silver fluoride

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https://www.readbyqxmd.com/read/28918101/silver-diamine-fluoride-remineralized-artificial-incipient-caries-in-permanent-teeth-after-bacterial-ph-cycling-in-vitro
#1
Kulnipa Punyanirun, Thanida Yospiboonwong, Thansinee Kunapinun, Panida Thanyasrisung, Chutima Trairatvorakul
OBJECTIVES: To investigate the remineralizing effect of 38% silver diamine fluoride (SDF) application on enamel artificial caries in adjunct to 1000ppm fluoride toothpaste compared with fluoride toothpaste alone by analyzing the mineral density, depth of remineralization, and remineralization percentage of the lesions. METHODS: Eighteen artificial caries slabs were created from the proximal surfaces of nine chemically demineralized premolars. The slabs were scanned by Micro-Computed Tomography (Micro-CT) to determine the baseline mineral density of the initial lesions and randomly allocated into 2 groups...
September 13, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28894868/rare-earth-ions-enhanced-near-infrared-fluorescence-of-ag2s-quantum-dots-for-the-detection-of-fluoride-ions-in-living-cells
#2
Caiping Ding, Xuanyu Cao, Cuiling Zhang, Tangrong He, Nan Hua, Yuezhong Xian
In this work, a novel phenomenon was discovered that the fluorescence intensity of silver sulfide quantum dots (Ag2S QDs) could be enhanced in the presence of rare earth ions through aggregation-induced emission (AIE). Based on the strong coordination between rare earth ions and F(-), a facile and label-free strategy was developed for the detection of F(-) in living cells. Ag2S QDs were synthesized using 3-mercaptopropionic acid as sulfur source and stabilizer in aqueous solution. The near infrared (NIR) emitting QDs exhibited excellent photostalilty, high quantum yield and low toxic...
September 12, 2017: Nanoscale
https://www.readbyqxmd.com/read/28891804/detection-of-suspended-nanoparticles-with-near-ambient-pressure-x-ray-photoelectron-spectroscopy
#3
Marit Kjærvik, Anja Hermanns, Paul Dietrich, Andreas Thissen, Stephan Bahr, Benjamin Ritter, Erhard Kemnitz, Wolfgang Unger
Two systems of suspended nanoparticles have been studied with near-ambient pressure XPS: silver nanoparticles in water and strontium fluoride - calcium fluoride core-shell nanoparticles in ethylene glycol. The corresponding dry samples were measured under ultra high vacuum for comparison. The results obtained under near-ambient pressure were overall comparable to those obtained under ultra high vacuum, although measuring silver nanoparticles in water requires a high pass energy and a long acquisition time. A shift towards higher binding energies was found for the silver nanoparticles in aqueous suspension compared to the corresponding dry sample, which can be assigned to a change of surface potential at the water-nanoparticle interface...
September 11, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28888414/use-of-silver-diamine-fluoride-for-the-maintenance-of-dental-prostheses-in-a-high-caries-risk-patient-a-medical-management-approach
#4
Lola Giusti, Cathrine Steinborn, Maya Steinborn
A technique for using silver diamine fluoride (SDF) as part of a regimen to help maintain dental prostheses in a patient with scleroderma and at high risk of caries is presented. Medically compromised, xerostomic, or elderly patients generally face greater risk of caries and specifically with prosthetic retainer teeth. SDF is a minimally invasive solution to this problem. A technique is described for using SDF to arrest and prevent new caries with the goal of maintaining fixed and removable prostheses and supporting teeth in a cost-effective manner...
September 6, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28866468/topical-silver-diamine-fluoride-for-dental-caries-arrest-in-preschool-children-a-randomized-controlled-trial-and-microbiological-analysis-of-caries-associated-microbes-and-resistance-gene-expression
#5
Peter Milgrom, Jeremy A Horst, Sharity Ludwig, Marilynn Rothen, Benjamin W Chaffee, Svetlana Lyalina, Katherine S Pollard, Joseph L DeRisi, Lloyd Mancl
OBJECTIVES: The Stopping Cavities Trial investigated effectiveness and safety of 38% silver diamine fluoride in arresting caries lesions. MATERIALS AND METHODS: The study was a double-blind randomized placebo-controlled superiority trial with 2 parallel groups. The sites were Oregon preschools. Sixty-six preschool children with ≥1 lesion were enrolled. Silver diamine fluoride (38%) or placebo (blue-tinted water), applied topically to the lesion. The primary endpoint was caries arrest (lesion inactivity, Nyvad criteria) 14-21days post intervention...
August 30, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28865824/limited-evidence-links-silver-diamine-fluoride-and-caries-arrest-in-children
#6
Jaana Gold
ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Clinical trials of silver diamine fluoride in arresting caries among children: A systematic review. Gao SS, Zhao IS, Hiraishi N, Duangthi D, Mei ML, Lo ECM, Chu CH. JDR-CTR 2016;1:201-10. SOURCE OF FUNDING: Academic research funding from the General Research Fund of the Research Grants Council of Hong Kong TYPE OF STUDY/DESIGN: Systematic review and meta-analysis.
September 2017: Journal of Evidence-based Dental Practice
https://www.readbyqxmd.com/read/28846469/randomized-clinical-trial-of-12-and-38-silver-diamine-fluoride-treatment
#7
M H T Fung, D Duangthip, M C M Wong, E C M Lo, C H Chu
This 30-mo randomized clinical trial compared the effectiveness of 2 concentrations (12% or 38%) of silver diamine fluoride (SDF) and 2 periodicity of application (once or twice a year) in arresting cavitated dentin caries in primary teeth. Children aged 3 to 4 y who had at least 1 active cavitated caries lesion were enrolled and randomly allocated into 4 groups for intervention. Group 1 had 12% SDF applied annually (every 12 mo), group 2 had 12% SDF applied semiannually (every 6 mo), group 3 had 38% SDF applied annually, and group 4 had 38% SDF applied semiannually...
August 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28845971/antibacterial-electrospun-poly-vinyl-alcohol-enzymatic-synthesized-poly-catechol-nanofibrous-midlayer-membrane-for-ultrafiltration
#8
Dora Coelho, Ana Sampaio, Carla J S M Silva, Helena P Felgueiras, M Teresa P Amorim, Andrea Zille
Two different nanofibrous antibacterial membranes containing enzymatically synthesized poly(catechol) (PC) or silver nitrate (AgNO3, positive control) blended with poly(vinyl alcohol) (PVA) and electrospun onto a poly(vinylidene fluoride) (PVDF) basal disc to generate thin-film composite midlayers were produced for water ultrafiltration applications. The developed membranes were thoroughly characterized in terms of morphology, chemical composition, and general mechanical and thermal features, antimicrobial activity, and ultrafiltration capabilities...
September 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28819096/controlled-radical-fluorination-of-poly-meth-acrylic-acids-in-aqueous-solution
#9
Yucheng Dong, Zhentao Wang, Chaozhong Li
Fluorinated alkenes exhibit very poor reactivity in copolymerization with non-fluorinated polar monomers such as acrylates. Herein we describe a convenient method for the synthesis of poly(vinyl fluoride-co-acrylic acid) and poly(2-fluoropropene-co-methacrylic acid) copolymers. Thus, the silver-catalyzed decarboxylative radical fluorination of poly(acrylic acid) with Selectfluor in water at room temperature affords poly(vinyl fluoride-co-acrylic acid) copolymers in high yields with well-defined molecular weights and polydispersities...
August 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28812312/a-systematic-review-of-silver-diamine-fluoride-effectiveness-and-application-in-older-adults
#10
REVIEW
Amruta D Hendre, George W Taylor, Elisa M Chávez, Susan Hyde
OBJECTIVE: This systematic review examines the effectiveness of silver diamine fluoride (SDF) in the management of caries in older adults. BACKGROUND: Silver diamine fluoride has been extensively researched and proven effective for caries prevention and arrest in children. Limited studies support its effectiveness in adult and older adult populations. MATERIALS AND METHODS: Multiple databases were searched according to specified inclusion-exclusion criteria...
August 15, 2017: Gerodontology
https://www.readbyqxmd.com/read/28798441/minimal-intervention-management-of-the-older-patient
#11
L J Walsh
With an aging population, dentists need to be aware of the risks which come to their elderly patients from retained teeth and exposed root surfaces. Oral health problems in the later years of life are multifactorial, with lifestyle, plaque and salivary factors remaining paramount. Root surface caries is likely to present a challenge in patients with a strong history of past coronal caries (and who have the attendant lifestyle risk factors) as well as in elderly patients who suddenly develop salivary hypofunction...
August 11, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28753269/highly-sensitive-flexible-pressure-sensor-based-on-silver-nanowires-embedded-polydimethylsiloxane-electrode-with-microarray-structure
#12
Xingtian Shuai, Pengli Zhu, Wenjin Zeng, Yougen Hu, Xianwen Liang, Yu Zhang, Rong Sun, Ching-Ping Wong
Flexible pressure sensors have attracted increasing research interest because of their potential applications for wearable sensing devices. Herein, a highly sensitive flexible pressure sensor is exhibited based on the elastomeric electrodes and a microarray architecture. Polydimethylsiloxane (PDMS) substrate, coated with silver nanowires (AgNWs), is used as the top electrode, while polyvinylidene fluoride (PVDF) as the dielectric layer. Several transfer processes are applied on seeking facile strategy for the preparation of the bottom electrode via embedding AgNWs into the PDMS film of microarray structure...
August 9, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28749529/effect-and-acceptance-of-silver-diamine-fluoride-treatment-on-dental-caries-in-primary-teeth
#13
Jennifer Clemens, Jaana Gold, Jeffrey Chaffin
OBJECTIVES: Silver diamine fluoride (SDF) treatment has been identified as a potential solution to address the dental public health issues of untreated dental caries and insufficient access to care. The current study assessed the effectiveness of 38 percent SDF in arresting active dental caries lesions and in reducing or preventing associated dental pain and infections in young, at-risk children. METHODS: We enrolled 32 children aged 2-5 years with 118 active caries lesions in primary teeth from a community dental clinic in Oregon...
July 27, 2017: Journal of Public Health Dentistry
https://www.readbyqxmd.com/read/28688180/effect-of-silver-diamine-fluoride-sdf-on-the-dentin-pulp-complex-ex-vivo-histological-analysis-on-human-primary-teeth-and-rat-molars
#14
Glenda Rossi, Aldo Squassi, Patricia Mandalunis, Andrea Kaplan
The aim of this study was to determine the effect of SDF on the dentin-pulp complex using two models: teeth after SDF application (ex vivo) and experimental animal molars. A descriptive study was performed using two models. In the first model, primary teeth (ex vivo) with enamel-dentin caries, without pulp involvement and previously treated with 38% SDF, were evaluated by means of two techniques: (a) Scanning Electron Microscopy (SEM) and energy-dispersive X-ray detector (EDS) to determine qualitative and quantitative composition, and (b) brightfield optical microscopy (OM) after decalcification...
April 2017: Acta Odontológica Latinoamericana: AOL
https://www.readbyqxmd.com/read/28684840/prevention-of-secondary-caries-using-silver-diamine-fluoride-treatment-and-casein-phosphopeptide-amorphous-calcium-phosphate-modified-glass-ionomer-cement
#15
(no author information available yet)
Treatment of the cavity with silver diamine fluoride before placement of glass ionomer cement containing CPP-ACP enhances anticariogenic effect in vitro.
July 7, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28675862/bone-char-with-antibacterial-properties-for-fluoride-removal-preparation-characterization-and-water-treatment
#16
Lorena Delgadillo-Velasco, Virginia Hernández-Montoya, Francisco J Cervantes, Miguel A Montes-Morán, Diana Lira-Berlanga
In the present work, it was established a new method for the preparation of bone chars with a double purpose, i.e., the removal of fluoride from water and the antibacterial character. These adsorbents were obtained by doping a commercial bone char with Ag using different reagents. The optimal conditions for the enrichment with silver were established by following the Taguchi method and using as response variable the removal of fluoride from water. Optimal bone chars were thus prepared and they were characterized using FT-IR spectroscopy, SEM/EDX analysis, adsorption isotherms of N2 at -196 °C and X-ray diffraction...
July 1, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28646533/palladium-catalyzed-fluoroarylation-of-gem-difluoroalkenes
#17
Hai-Jun Tang, Ling-Zhi Lin, Chao Feng, Teck-Peng Loh
A Pd-catalyzed fluoroarylation of gem-difluoroalkenes with aryl halides is reported. By taking advantage of the in situ generated α-CF3 -benzylsilver intermediates derived from the nucleophilic addition of silver fluoride to gem-difluoroalkenes, this strategy bypasses the use of a strong base, thus enabling a mild and general synthetic method for ready access to non-symmetric α,α-disubstituted trifluoroethane derivatives.
June 24, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28642564/remineralisation-and-arresting-caries-in-children-with-topical-fluorides
#18
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
#19
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
#20
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
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