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Fluoridation

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https://www.readbyqxmd.com/read/29334651/effects-of-perinatal-fluoride-exposure-on-the-expressions-of-mir-124-and-mir-132-in-hippocampus-of-mouse-pups
#1
Jixiang Wang, Yuliang Zhang, Zhenzhen Guo, Rui Li, Xingchen Xue, Zilong Sun, Ruiyan Niu
To investigate the effects of perinatal fluoride exposure on learning and memory ability of mouse offspring, ICR female mice were received different doses of sodium fluoride (0, 25, 50, 100 mg/L NaF) from pregnant day 7 to lactational day 21. Pups were exposed to fluoride through the cord blood and breast milk. Open field test showed that compared to the control group, perinatal fluoride exposure significantly decreased the number of entries into the center zone in 100 mg/L NaF group. In the eight-arm maze test, the number of working memory errors, reference memory errors, and the total arm entries were significantly increased in fluoride treatment groups, compared to the control group...
January 8, 2018: Chemosphere
https://www.readbyqxmd.com/read/29334438/in-vitro-and-in-vivo-evaluations-of-the-anticalculus-effect-of-a-novel-stabilized-stannous-fluoride-dentifrice
#2
Tao He, Mary Kay Anastasia, Marianne Zsiska, Teresa Farmer, Eva Schneiderman, Jeffery L Milleman
OBJECTIVES: To evaluate the effect of a novel stannous fluoride dentifrice with zinc citrate on calculus inhibition using both in vitro and clinical models. METHODS: Each investigation tested a novel stabilized 0.454% stannous fluoride dentifrice with zinc citrate as an anticalculus agent (Crest® Pro-Health™ smooth formula) compared to a negative control fluoride dentifrice. The in vitro study used the modified Plaque Growth and Mineralization Model (mPGM). Plaque biofilms were prepared and mineralized by alternate immersion of glass rods in human saliva and artificial mineralization solution...
December 2017: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/29334437/a-randomized-clinical-trial-to-measure-the-erosion-protection-benefits-of-a-novel-stabilized-stannous-fluoride-dentifrice-versus-a-control-dentifrice
#3
Xinyi Zhao, Tao He, Yanyan He, Cathy Cheng, Haijing Chen
OBJECTIVES: The aim of this investigation was to assess the erosion protection ability of a novel stabilized stannous fluoride (SnF2) dentifrice and a control sodium fluoride dentifrice (NaF) using a well-credentialed human in situ model. METHODS: A novel smooth texture 0.454% stabilized SnF2 dentifrice (Crest® Pro-Health™ smooth formula) and a 0.23% NaF marketed control dentifrice with 5% potassium nitrate (Sensodyne® Pronamel®) were compared in a 10-day, single center, randomized, controlled, double-blind, two-treatment, three-period crossover in situ clinical trial...
December 2017: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/29334436/assessment-of-the-effects-of-a-novel-stabilized-stannous-fluoride-dentifrice-on-gingivitis-in-a-two-month-positive-controlled-clinical-study
#4
Tao He, Rachelle Eusebio, C R Goyal, Jimmy G Qaqish
OBJECTIVES: The aim of this study was to compare the antibleeding/antigingivitis effectiveness of a newly formulated 0.454% stabilized stannous fluoride dentifrice and a marketed positive control triclosan-containing dentifrice in adults with mild-to-moderate gingivitis. METHODS: This single-center, two-month, randomized and controlled, double-blind, parallel group clinical trial involved adults with preexisting mild-to-moderate gingivitis. Baseline bleeding and gingivitis levels were assessed with the Gingival Bleeding Index (GBI) and Lobene Modified Gingival Index (MGI)...
December 2017: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/29334435/comparative-antiplaque-effect-of-two-antimicrobial-dentifrices-laboratory-and-clinical-evaluations
#5
Lynn R Friesen, C R Goyal, Jimmy G Qaqish, Tao He, Rachelle Eusebio, Marianne Zsiska, Teresa Farmer, Eva Schneiderman
OBJECTIVES: To compare the effect of a stannous fluoride dentifrice versus a triclosan-containing dentifrice on the reduction of plaque using in vitro and clinical models. METHODS: Both investigations evaluated a novel 0.454% stabilized stannous fluoride dentifrice (Crest® Pro-Health™ smooth formula) versus a sodium fluoride/triclosan positive control dentifrice (Colgate® Total®). The in vitro evaluation utilized the Plaque Glycolysis and Regrowth Model (PGRM), wherein the metabolic effects (acid production/glycolysis inhibition) of the dentifrices were assessed on plaque biofilms grown on glass rods after three days growth and a single dentifrice treatment...
December 2017: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/29334434/the-case-for-stabilized-stannous-fluoride-dentifrice-an-advanced-formulation-designed-for-patient-preference
#6
Tao He, Svetlana Farrell
Oral diseases, particularly caries and gingivitis, continue to be widespread. Incorporating a stabilized stannous fluoride dentifrice into patients' daily oral hygiene routine is a convenient, cost effective approach to improve and protect their oral health and the appearance of their smile. Unlike other common fluorides that only provide anti-caries benefits (e.g., sodium fluoride and sodium monofluorophosphate), stabilized stannous fluoride formulations have demonstrated broader and significantly greater protection, also reducing plaque, gingivitis, erosion, sensitivity, and halitosis...
December 2017: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/29334137/calcium-phosphate-precipitation-in-experimental-gaps-between-fluoride-containing-fast-setting-calcium-silicate-cement-and-dentin
#7
Bahram Ranjkesh, Ming Ding, Michel Dalstra, Jens R Nyengaard, Jacques Chevallier, Flemming Isidor, Henrik Løvschall
A novel fast-setting calcium silicate cement containing fluoride (novel-CSC) has been developed for applications in tooth crowns. The aim of this study was to assess the ability of the novel-CSC to close the experimental gaps at the dentin-cement interface. The novel-CSC was tested against Vitrebond and GC Fuji II LC. Experimental gaps of 50 or 300 μm width were created between the materials and dentin. Specimens with the 300-μm-wide gap were immersed in phosphate-buffered saline and the closed gap area was measured during 96 h...
January 15, 2018: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29333778/-remineralization-effect-of-casein-phosphopeptide-amorphous-calcium-phosphate-for-enamel-demineralization-a-system-review
#8
Wang Xiaotong, Rao Nanquan, Xie Jing, Zhao Yuming, Ge Lihong
OBJECTIVE: This study  aims  to  assess  the  remineralization effect of casein phosphopeptide (CPP)-amorphous calcium phosphate (ACP) on enamel demineralization by  performing  system review of  randomized  controlled  trials (RCT)  involving  the  treatment of enamel demineralization with  CPP-ACP. METHODS: The  study  was  developed  based  on  the 
Cochrane handbook  for  systematic  reviews of  interventions (Version 5...
December 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/29331911/enhanced-photocatalytic-degradation-of-sulfamethoxazole-by-zinc-oxide-photocatalyst-in-the-presence-of-fluoride-ions-optimization-of-parameters-and-toxicological-evaluation
#9
Amir Mirzaei, Laleh Yerushalmi, Zhi Chen, Fariborz Haghighat, Jianbo Guo
The presence of antibiotics in water bodies has received increasing attention since they are continuously introduced and detected in the environment and may cause unpredictable environmental hazards and risks. The photocatalytic degradation of sulfamethoxazole (SMX) by ZnO in the presence of fluoride ions (F-ZnO) was evaluated. The effects of operating parameters on the efficiency of SMX removal were investigated by using response surface methodology (RSM). Under the optimum condition, i.e. photocatalyst dosage = 1...
January 11, 2018: Water Research
https://www.readbyqxmd.com/read/29331812/evidence-of-c-f-p-and-aromatic-%C3%AF-f-p-weak-interactions-in-imidazolium-ionic-liquids-and-its-consequences
#10
Sumit Kumar Panja, Nitin Srivastava, Jyoti Srivastava, Namburi Eswara Prasad, Hemanth Noothalapati, Shinsuke Shigeto, Satyen Saha
A simple change from alkyl group to alkene in side chain of imidazolium cation with same anion resulted in a drastic impact on physical properties (e.g., melting point) from bmimPF6 IL to cmimPF6 IL. The underlying reasons have been elucidated by structural and interaction studies with the help of DSC, SCXRD, vibrational and multi-nuclear NMR spectroscopic techniques. Experiments reveal existence of new weak interactions involving the carbon and π cloud of the imidazolium aromatic ring with fluoride of PF6 anion (i...
December 19, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29331777/comparing-the-antifouling-effects-of-activated-carbon-and-tio2-in-ultrafiltration-membrane-development
#11
Qianyu Liu, Shaobin Huang, Yongqing Zhang, Shuaifei Zhao
We use activated carbon (AC) and titanium oxide (TiO2) nanomaterials as the additives to prepare four polyvinylidene fluoride (PVDF) based ultrafiltration membranes by nonsolvent induced phase separation. The surface properties (pore size, porosity, hydrophilicity and roughness) of the membranes are characterized by scanning electron microscopy, water contact angle measurement, and atomic force microscopy. The chemical properties of the membranes are evaluated by Fourier transform infrared spectroscopy with attenuated total reflection and X-ray diffraction...
January 6, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29330841/delayed-replantation-of-an-avulsed-immature-permanent-incisor-and-apexification-using-a-novel-fast-setting-calcium-silicate-cement-containing-fluoride-a-3-year-follow-up-case-report
#12
A Vafaei, B Ranjkesh, L Erfanparast, H Løvschall
BACKGROUND: Traumatic tooth avulsion requires an urgent intervention to replant the tooth. Prolonged post-injury dry extra-oral conditions worsen the prognosis and increase the risk of root resorption. Fluoride has the potential to delay replacement resorption. Calcium silicate cements (CSC) are used to seal the root canal system and to stimulate periapical regeneration in immature open apex teeth (apexification). This report suggests the application of a novel fast-setting CSC with fluoride for apexification in an attempt to hinder root resorption...
January 12, 2018: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/29329495/organometallic-mediated-radical-polymerization-of-vinylidene-fluoride
#13
Bruno Michel Ameduri, Rinaldo Poli, Vincent Ladmiral, Sanjib Banerjee, Antoine Debuigne, Christophe Detrembleur
An unprecedented level of control for the radical polymerization of vinylidene fluoride (VDF), yielding well-defined PVDF (at least up to 14,500 g/mol) with low dispersity (≤1.32), was achieved using organometallic mediated radical polymerization (OMRP) with an organocobalt compound as initiator. The high chain-end fidelity was demonstrated by the synthesis of PVDF- and PVAc-containing di-and tri-block copolymers. DFT calculations rationalize the equally efficient reactivation of the dormant species with both head and tail chain ends...
January 12, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29329443/bone-formation-in-ankylosing-spondylitis-during-anti-tumour-necrosis-factor-therapy-imaged-by-18f-fluoride-positron-emission-tomography
#14
Stefan T G Bruijnen, Nicki J F Verweij, Leonie M van Duivenvoorden, Nathalie Bravenboer, Dominique L P Baeten, Christiaan J van Denderen, Irene E van der Horst-Bruinsma, Alexandre E Voskuyl, Martijn Custers, Peter M van de Ven, Joost C J Bot, Bouke J H Boden, Adriaan A Lammertsma, Otto S H Hoekstra, Pieter G H M Raijmakers, Conny J van der Laken
Objectives: Excessive bone formation is an important hallmark of AS. Recently it has been demonstrated that axial bony lesions in AS patients can be visualized using 18F-fluoride PET-CT. The aim of this study was to assess whether 18F-fluoride uptake in clinically active AS patients is related to focal bone formation in spine biopsies and is sensitive to change during anti-TNF treatment. Methods: Twelve anti-TNF-naïve AS patients [female 7/12; age 39 years (SD 11); BASDAI 5...
January 9, 2018: Rheumatology
https://www.readbyqxmd.com/read/29328264/mid-infrared-supercontinuum-generation-from-1-6-to-11%C3%A2-%C3%A2-%C3%AE-m-using-concatenated-step-index-fluoride-and-chalcogenide-fibers
#15
Ramon A Martinez, Genevieve Plant, Kaiwen Guo, Brian Janiszewski, Michael J Freeman, Robert L Maynard, Mohammed N Islam, Fred L Terry, Oseas Alvarez, Francois Chenard, Robert Bedford, Ricky Gibson, Agustin I Ifarraguerri
We demonstrate an all-fiber supercontinuum source that generates a continuous spectrum from 1.6 μm to >11  μm with 417 mW on-time average power at 33% duty cycle. By utilizing a master oscillator power amplifier pump with three amplification stages and concatenating solid core ZBLAN, arsenic sulfide, and arsenic selenide fibers, we shift 1550 nm light to ∼4.5  μm, ∼6.5  μm, and >11  μm, respectively. With 69 mW past 7.5 μm, this source provides both high power and broad spectral expansion, while outputting a single fundamental mode...
January 15, 2018: Optics Letters
https://www.readbyqxmd.com/read/29328238/2%C3%A2-%C3%A2-%C3%AE-m-doppler-wind-lidar-with-a-tm-fiber-laser-pumped-ho-ylf-laser
#16
Kohei Mizutani, Shoken Ishii, Makoto Aoki, Hironori Iwai, Ryohei Otsuka, Hirotake Fukuoka, Takayoshi Isikawa, Atsushi Sato
A 2 μm Ho-doped ytrrium lithium fluoride (Ho:YLF) laser end-pumped by a 1.94 μm Tm:fiber laser was developed. A laser system of a ring resonator oscillator and amplifier was operated at repetition rates of 200-5000 Hz at room temperature. The Q-switched outputs were 7.4 W at 5000 Hz and 4.25 W at 200 Hz. Injection seeding was applied to the ring resonator, and single-mode laser emission was obtained. The Tm:fiber-laser-pumped Ho:YLF laser was first used for Doppler wind lidar measurements, and wind profiles were obtained up to ranges of about 15 km in a range resolution of 96 m and an integration time of 1 s...
January 15, 2018: Optics Letters
https://www.readbyqxmd.com/read/29328167/high-speed-real-time-heterodyne-interferometry-using-software-defined-radio
#17
L M Riobo, F E Veiras, M G Gonzalez, M T Garea, P A Sorichetti
This paper describes the design and performance of a phase demodulation scheme based on software-defined radio (SDR), applied in heterodyne interferometry. The phase retrieval is performed in real time by means of a low-cost SDR with a wideband optoelectronic front-end. Compared to other demodulation schemes, the system is quite simpler, versatile, and of lower cost. The performance of the demodulator is demonstrated by measuring the displacement per volt of a thin-film polymeric piezoelectric transducer based on polyvinylidene fluoride for ultrasonic applications...
January 10, 2018: Applied Optics
https://www.readbyqxmd.com/read/29327935/introduction-of-a-crystalline-shelf-stable-reagent-for-the-synthesis-of-sulfur-vi-fluorides
#18
Hua Zhou, Paramita Mukherjee, Rongqiang Liu, Edelweiss Evrard, Dianpeng Wang, John M Humphrey, Todd W Butler, Lise R Hoth, Jeffrey B Sperry, Sylvie K Sakata, Christopher J Helal, Christopher W Am Ende
The design, synthesis, and application of [4-(acetylamino)phenyl]imidodisulfuryl difluoride (AISF), a shelf-stable, crystalline reagent for the synthesis of sulfur(VI) fluorides, is described. The utility of AISF is demonstrated in the synthesis of a diverse array of aryl fluorosulfates and sulfamoyl fluorides under mild conditions. Additionally, a single-step preparation of AISF was developed that installed the bis(fluorosulfonyl)imide group on acetanilide utilizing an oxidative C-H functionalization protocol...
January 12, 2018: Organic Letters
https://www.readbyqxmd.com/read/29327019/using-a-novel-rigid-fluoride-polymer-to-control-the-interfacial-thickness-of-graphene-and-tailor-the-dielectric-behavior-of-poly-vinylidene-fluoride-trifluoroethylene-chlorotrifluoroethylene-nanocomposites
#19
Xianghui Han, Sheng Chen, Xuguang Lv, Hang Luo, Dou Zhang, Chris R Bowen
Polymer nanocomposites based on conductive fillers for high performance dielectrics have attracted increasing attention in recent years. However, a number of physical issues are unclear, such as the effect of interfacial thickness on the dielectric properties of the polymer nanocomposites, which limits the enhancement of permittivity. In this research, two core-shell structured reduced graphene oxide (rGO)@rigid-fluoro-polymer conducting fillers with different shell thicknesses are prepared using a surface-initiated reversible-addition-fragmentation chain transfer polymerization method, which are denoted as rGO@PTFMS-1 with a thin shell and rGO@PTFMS-2 with a thick shell...
January 12, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29326518/toothpaste-use-protocol-with-dental-bleaching-for-a-conservative-treatment-case-reports
#20
Waldemir F Vieira-Junior, Thayla H N Gouveia, Bruna G Silva, Vanessa C P S Bueno, Flávio H B Aguiar, Débora A N L Lima
In-office bleaching is a treatment based on products that contain hydrogen peroxide (HP) while demonstrating whitening effectiveness. HP could promote alterations to surface morphologies and properties of dental tissues. The objective was describe a toothpaste protocol associated to bleaching therapy to promote a safer approach. Patient 1 (male) and Patient 2 (female) were attended, and toothbrushing (twice a day) with a dentifrice containing bioactive glass (BG) (NovaMin™) and fluoride was indicated before and during the treatment...
October 2017: Contemporary Clinical Dentistry
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