Results 31 to 40 of about 54,447 (288)

Well Cement Degradation and Wellbore Integrity in Geological CO2 Storages: A Literature Review [PDF]

open access: yesPetroleum & Petrochemical Engineering 5 (2021), 2023
Carbon capture and storage (CCS) has emerged as the most effective method to curb the CO2 concentration in the atmosphere. It can store up to 5 billion tons of CO2 per year. To guarantee a safe and economical geological storage, the well cement degradation and wellbore integrity need to be studied thoroughly.
arxiv   +1 more source

Mechanical and dentin bond strength properties of the nanosilver enriched glass ionomer cement

open access: yesJournal of Clinical and Experimental Dentistry, 2019
Background The aim of this study was to investigate the mechanical properties and dentin microshear bond strength of a conventional glass ionomer cement (GIC) compared to GIC supplemented with silver nanoparticles (SNPs) at 0.1% and 0.2% (w/w).
Z. Jowkar, M. Jowkar, F. Shafiei
semanticscholar   +1 more source

Kekuatan perlekatan geser semen ionomer kaca terhadap dentin dan NiCr alloy (Shear bond strenght of glass ionomer cement in dentin and NiCr alloy)

open access: yesDental Journal, 2006
Glass ionomer cements were used broadly in restorative dentistry. That’s why researchers always try to invent new form of glass ionomer cement. The newest invention was the paste-paste formulation.
Mira Leonita, R. Iskandar
doaj   +1 more source

Density Functional Modeling and Total Scattering Analysis of the Atomic Structure of a Quaternary CaO-MgO-Al2O3-SiO2 (CMAS) Glass: Uncovering the Local Environment of Magnesium [PDF]

open access: yesPhys. Rev. Materials 5, 015603 (2021), 2019
Quaternary CaO-MgO-Al2O3-SiO2 glasses are important constituents of the Earth's lower crust and mantle, and they also have important industrial applications such as in metallurgical processes, concrete production and emerging low-CO2 cement technologies.
arxiv   +1 more source

Acoustic Monitoring of Inelastic Compaction in Porous Granular Materials [PDF]

open access: yesarXiv, 2023
We study the transition from cohesive to noncohesive granular states of synthetic rocks under oedometric loading, combining simultaneous measurements of ultrasound velocity and acoustic emissions. Our samples are agglomerates made of glass beads bonded with a few percent of cement, either ductile or brittle.
arxiv  

Fluoride release and uptake in enhanced bioactivity glass ionomer cement (“glass carbomer™”) compared with conventional and resin-modified glass ionomer cements

open access: yesJournal of Applied Oral Science, 2019
Objectives To study the fluoride uptake and release properties of glass carbomer dental cements and compare them with those of conventional and resin-modified glass ionomers.
A. M. Hasan, S. Sidhu, J. Nicholson
semanticscholar   +1 more source

Density functional modeling of the binding energies between aluminosilicate oligomers and different metal cations [PDF]

open access: yesarXiv, 2023
Interactions between negatively charged aluminosilicate species and positively charged metal cations are critical to many important engineering processes and applications, including sustainable cements and aluminosilicate glasses. In an effort to probe these interactions, here we have calculated the pair-wise interaction energies (i.e., binding ...
arxiv  

Effect of anti-biofilm glass–ionomer cement on Streptococcus mutans biofilms

open access: yesInternational Journal of Oral Science, 2016
Dental restorative materials with antimicrobial properties can inhibit bacterial colonization, which may result in a reduction of caries at tooth-filling interaction zones.
S. Wang   +10 more
semanticscholar   +1 more source

Evaluation of the effect of desensitizing agents on the retention of complete cast crowns: An in vitro study

open access: yesSRM Journal of Research in Dental Sciences, 2014
Purpose: Dentin desensitizing agents are commonly used in dental practice. But their effect on crown retention have been anecdotal. This study compared and evaluated the effect of two desensitizing agents on the retention of cast crowns cemented with ...
Arun Prakash Chandrasekaran   +5 more
doaj   +1 more source

The Effect of Various Cementing Agents on Occlusal Discrepancy Using an Intra-Oral Scanner: An In Vivo Study

open access: yesApplied Sciences, 2022
A marginal fit of all-ceramic crowns is a prerequisite for the long-term clinical success of a dental restoration. Few in vivo studies have investigated the effect of the film thickness of various luting agents on vertical discrepancy. This in vivo study
Ameer Biadsee   +5 more
doaj   +1 more source

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