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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Camilleri, Josette
University of Birmingham
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2024Proposing new standards for testing solubility of pulp preservation materialscitations
- 2024Chemical, antibacterial and cytotoxic properties of four different endodontic sealer leachates over timecitations
- 2024Leaching and cytotoxicity of bismuth oxide in ProRoot MTAcitations
- 2024Characterization and Assessment of Physical Properties of 3 Single Syringe Hydraulic Cement-based Sealerscitations
- 2023Editorial
- 2022Surface characteristics and bacterial adhesion of endodontic cements.citations
- 2022Surface characteristics and bacterial adhesion of endodontic cements ; ENEngelskEnglishSurface characteristics and bacterial adhesion of endodontic cementscitations
- 2021Effect of different manipulations on the physical, chemical and microstructural characteristics of Biodentinecitations
- 2021PRILE 2021 guidelines for reporting laboratory studies in endodontologycitations
- 2020Antimicrobial and ultrastructural properties of root canal filling materials exposed to bacterial challengecitations
- 2020Characterization of heat resistant hydraulic sealer for warm vertical obturationcitations
- 2020Classification of hydraulic cements used in dentistrycitations
- 2019Bioactivity potential of Portland cement in regenerative endodontic procedurescitations
- 2019Investigation of the effect of the water to powder ratio on hydraulic cement propertiescitations
- 2018Surface Microstructural Changes and Release of Ions from Dental Metal Alloy Removable Prostheses in Patients Suffering from Acid Refluxcitations
- 2018The effect of mixing method on tricalcium silicate-based cementcitations
- 2018Assessment of corrosion resistance of cast cobalt- and nickel-chromium dental alloys in acidic environmentscitations
- 2017Antimicrobial activity of ProRoot MTA in contact with bloodcitations
- 2017Bonding over Dentin Replacement Materialscitations
- 2017Will Bioceramics be the Future Root Canal Filling Materials?citations
- 2016Assessment of the interaction of Portland cement-based materials with blood and tissue fluids using an animal modelcitations
- 2015Effect of sterilization techniques prior to antimicrobial testing on physical properties of dental restorative materialscitations
- 2014Color stability of white mineral trioxide aggregate in contact with hypochlorite solutioncitations
Places of action
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article
Investigation of the effect of the water to powder ratio on hydraulic cement properties
Abstract
<p>Objective: The use of rheological properties to determine the optimal water: powder ratio of tricalcium silicate-based prototype materials incorporating alternative radiopacifiers and fillers. Determination of how the proportion of water incorporated affected the physicochemical behaviour of the materials. </p><p>Methods: Endodontic cements replaced with 30% radiopacifier, and additions of calcium phosphate and micro-silica were tested. The unmodified cements were mixed with a 0.35 water: powder ratio which served as control. At this water: powder ratio, unmodified Portland cement without any addition had an adequate consistency and furthermore it has been well characterized. Assessment of material rheological properties enabled adjustment of the water: powder ratio in each material to provide comparable viscosity values to those of the pure cement. The flowability, phase analysis and calcium release were measured for both viscosity-matched and the standard 0.35 water: powder ratio blends. The prototype materials with the adjusted water: powder ratios were also characterized by scanning electron microscopy, energy-dispersive spectroscopy and evaluated for radio-opacity. </p><p>Results: The use of the 0.35 water: powder ratio is not appropriate when changing the radiopacifier and incorporating additives. Zirconium oxide did not vary the water: powder ratio but tantalum oxide and calcium tungstate resulted in an increase and decrease in water demand respectively. Using the standard 0.35 ratio when the mixture had a low water demand resulted in higher flowability values and calcium release in solution. Micro-silica and calcium phosphate altered the hydration of the materials. All materials were adequately radiopaque. </p><p>Significance: Rheological assessment is an easy reproducible way to determine the water: powder ratios of materials with varying amounts of additives and radiopacifiers during development. Modifications to the water: powder ratio affects material properties.</p>