Fluoride release and recharge of enhanced resin modified glass ionomer at different time intervals

Nagi, Shaymaa M.; Moharam, Lamiaa M.; Hoshy, Ahmed Z. El

doi:10.1016/j.fdj.2018.06.005

Cited by 15 publications

(20 citation statements)

References 15 publications

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“…The relative refractive index difference and the normalized frequency can be estimated by [2,3,[5][6][7][8]27]:…”

Section: Model Description and Research Methodsmentioning

confidence: 99%

“…B1=0.068+0.0005 x, B2=0.116+0.0377 x, B3=9.896+1.94577 x (8) the first and second differentiation with respect to wavelength can be estimated by the following equations:…”

Section: Model Description and Research Methodsmentioning

confidence: 99%

“…BWF=0.44/Tmin (16) where the minimum pulse broadening due to the dispersion factor is given by [3,5,8,12,15,26,27]:…”

Section: Model Description and Research Methodsmentioning

confidence: 99%

“…The power of the transmitted signal is considered due to the disturbances that accompany the transmission and reception of the signal (electronic noise, interference, etc.). Receivers may not detect and demodulate input signals with a power lower than a minimum level [1][2][3][4][5][6][7][8][9] called the sensitivity of the receiver. Further specifications, which affect the quality of service, are given in terms of signal-to-noise rate and bit error rate [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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Conventional doped silica/fluoride glass fibers for low loss and minimum dispersion effects

Alatwi

Rashed

2021

IJEECS

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This paper has clarified the conventional silica doped (SiGeO2) and aluminum fluoride (AlF3) fibers for low loss and minimum dispersion effects for upgrading fiber-optic communication systems. The total dispersion with the total losses are modeled for both fibers. Fiber bandwidth and the power received are estimated based on different dopant ratios. The spectral and thermal effects are applied on both fibers. The study assured the negative effects of increasing ambient temperatures and the positive effects of increasing dopant ratios on the performance of the fibers.

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“…The relative refractive index difference and the normalized frequency can be estimated by [2,3,[5][6][7][8]27]:…”

Section: Model Description and Research Methodsmentioning

confidence: 99%

“…B1=0.068+0.0005 x, B2=0.116+0.0377 x, B3=9.896+1.94577 x (8) the first and second differentiation with respect to wavelength can be estimated by the following equations:…”

Section: Model Description and Research Methodsmentioning

confidence: 99%

“…BWF=0.44/Tmin (16) where the minimum pulse broadening due to the dispersion factor is given by [3,5,8,12,15,26,27]:…”

Section: Model Description and Research Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Conventional doped silica/fluoride glass fibers for low loss and minimum dispersion effects

Alatwi

Rashed

2021

IJEECS

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“…They clarified the simulation modeling of RoF for home network applications using different line coding. Performance parameters evaluation is summarized such as Q-factor, BER, eye height, and threshold value with respect to transmission bit rate and fiber cable length under different line coding schemes [3,[10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Duobinary modulation/predistortion techniques effects on high bit rate radio over fiber systems

Eid

Seliem

Rashed³

et al. 2021

IJEECS

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The work has presented duobinary modulation and predistortion techniques for the radio over fiber system enhancement for achieving security level. Duobinary modulation technique has more compact modulated spectral linewidth with standard non return to zero modulation code. Different NRZ/RZ rectangle shape employed that are namely exponential rectangle shape (ERS), and Gaussian rectangle shape (GRS) for different transmission bit rates. Switching bias voltage, and switching RF voltage based LiNbO3 modulator are changed to measure the performance parameters of the radio over fiber (RoF) system. Predistortion technique improves the linearity of transmitter amplifiers and it is considered as a power efficiency technique. The optimum values of the Q-factor, data error rate (BER), electrical power, signal gain, noise figure, and light signal/noise ratio are achieved with 8 Volt for both switching biases/switching RF signal at 100 GHz. Signal quality/BER and electrical power after the receiver enhancement ratio by using this technique at different RF signal frequencies.

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Modification of glass-ionomer cement properties by quaternized chitosan-coated nanoparticles

et al. 2022

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Glass ionomers (GICs), because of their qualities, are in a good position to be modified to resist masticatory stresses as permanent posterior restoration and prevent recurrent caries. The purpose of the present study was to evaluate the effect of adding quaternized chitosan-coated mesoporous silica nanoparticles (HTCC@MSNs) to conventional GIC on its mechanical properties, antimicrobial activity and fluoride release and the effect of 1- and 3-month water aging on the studied properties. HTCC@MSNs was synthesized, added to commercially available conventional GIC at 1%, 3%, and 5% by weight forming three experimental groups and compared with plain GIC as a control group. Flexural strength, modulus, Vickers microhardness and wear volumes were evaluated. Antibacterial activity was tested against Streptococcus mutans and fluoride release in de-ionized water was measured. All properties were evaluated before and after one- and three-month aging (n = 10 specimens per test/per time). Two-way ANOVA was used for statistical analysis. Characterization confirmed successful preparation of HTCC@MSNs. The flexural strength, modulus, hardness and wear resistance of the GICs improved significantly by adding 1–3% HTCC@MSNs, while 5% HTCC@MSNs group showed no significant difference compared to control group. Bacterial inhibition zones and fluoride release increased proportionally to the amount of filler added. Mechanical properties were improved by artificial aging. Fluoride release values, and bacterial inhibition zones decreased with aging for all groups. HTCC@MSNs as a filler with the optimized proportion provides strengthening and antibacterial effect. In addition, aging is an important factor to be considered in evaluating experimental fillers.

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Fluoride release and recharge of enhanced resin modified glass ionomer at different time intervals

Cited by 15 publications

References 15 publications

Conventional doped silica/fluoride glass fibers for low loss and minimum dispersion effects

Conventional doped silica/fluoride glass fibers for low loss and minimum dispersion effects

Duobinary modulation/predistortion techniques effects on high bit rate radio over fiber systems

Modification of glass-ionomer cement properties by quaternized chitosan-coated nanoparticles

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