Studies in the setting of polyelectrolyte materials

@article{Anstice1994StudiesIT,
  title={Studies in the setting of polyelectrolyte materials},
  author={H. M. Anstice and John W. Nicholson},
  journal={Journal of Materials Science: Materials in Medicine},
  year={1994},
  volume={5},
  pages={299-302}
}
  • H. Anstice, J. Nicholson
  • Published 1 May 1994
  • Medicine, Materials Science
  • Journal of Materials Science: Materials in Medicine
The effect on a water-activated glass poly (alkenoate) dental cement of replacing the water with methanol, 50/50 water/methanol or 50/50 water/HEMA has been studied. The presence of the organic compounds caused the setting reaction to be substantially slowed down, and the resulting cements to be significantly weaker than those prepared with water. The use of water/HEMA had less effect on the speed of set than the use of water/methanol, but led to weaker cements. The post-hardening maturation… 
Studies in the setting of polyelectrolyte cements
TLDR
Compressive strength at 24 h was determined for all three acids at 20% concentration, and found to be unaffected by the changes in setting chemistry, all being of the order of 90–95 MPa (i.e. the same as for pure water).
Polyelectrolyte Restorative Materials
TLDR
The history of polyelectrolyte restorative materials began in 1968 when Dr (now Professor) Dennis Smith, then of Manchester University, England, announced the invention of zinc polycarboxylate cement, which ushered in the era of adhesive dentistry for, prior to its invention, dental restoratives had had to be retained mechanically by means of undercut cavities.
Water dynamics in glass ionomer cements
TLDR
Water dynamics of two different liquids used to prepare either conventional or resin-modified glass ionomer cement are studied by combining thermal analysis with neutron scattering data to relate the water structure in the liquids to the materials properties.
Resin-modified Glass-ionomer Setting Reaction Competition
TLDR
Investigation of RMGI setting reaction interactions using differential scanning calorimetry by varying light-cure initiation times suggests that earlier light-activation may limit the acid-base reaction and result in a different structured material.
Resin-modified glass-ionomer cements
INFLUENCE OF HEMA CONTENT ON THE MECHANICAL AND BONDING PROPERTIES OF EXPERIMENTAL HEMA-ADDED GLASS IONOMER CEMENTS
TLDR
It is suggested that addition of an appropriate amount of HEMA to glass ionomer cement would increase diametral tensile strength as well as bond strength to alloys and teeth.
Structural and spatially resolved studies on the hardening of a commercial resin-modified glass-ionomer cement
TLDR
A commercial photopolymerizable resin-modified glass-ionomer (Fuji II LC) was studied using a variety of nuclear magnetic resonance (NMR) techniques to obtain structural information on the glass and cements that were either SC or SPC.
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References

SHOWING 1-10 OF 11 REFERENCES
Studies in the setting of polyelectrolyte cements
Specimens of zinc polycarboxylate dental cement have been prepared with methanol or methanol/water mixtures as solvent. Such cements set at a reduced rate compared with those activated by water
New Aspects of the Setting of Glass-ionomer Cements
TLDR
The results support the idea that there is a secondary setting reaction in glass ionomers and suggest that it is responsible for the increase in strength observed.
Studies on the structure of light-cured Glass-ionomer cements
The behaviour of two commercial light-cured glass-polyalkenoate (“Glass-ionomer”) cements has been studied in terms of changes in strength following storage under various conditions. Unlike
A study of the structure of zinc polycarboxylate dental cements
Two examples of zinc polycarboxylate dental cement were studied, one of which was prepared from an aqueous solution of poly (acrylic acid) together with the zinc oxide powder, the other being
A preliminary report on the effect of storage in water on the properties of commercial light-cured glass-ionomer cements
TLDR
Two commercially available light-curable glass-ionomer cements, Vitrebond and XR-Ionomer, have been studied and their compressive strengths measured following storage under wet and dry conditions for varying lengths of time up to 3 months indicate that the properties of these particular light- cured cements change markedly on exposure to moisture.
The Hydration of Dental Cements
TLDR
A linear relationship was found to exist between strength and the degree of hydration of dental cements, and all the cements were found to become more highly hydrated and stronger as they aged.
Characterisation of the ultrastructure of glass-ionomer (poly-alkenoate) cement
TLDR
It was suggested that the mobility of these ions in the matrix phase was important in determining the biocompatibility and adhesive properties of glass-ionomer cements.
Solvent effects in polyelectrolyte systems. 3. Spectrophotometric results with (partially) neutralized poly(acrylic acid) in methanol and general conclusions regarding these systems
Les mesures d'absorption dans le proche UV de polymere en partie neutralise, a temperature ambiante, confirment que ces solutions polymeriques different si l'on emploie le sodium ou le lithium comme
The comparative strengths of commercial glass-ionomer cements with and without metal additions
TLDR
The addition of metal to glass-ionomer cements can markedly increase the strength of the materials, however, the method of fusing the metal to the glass rather than by simple addition does not produce any advantages in strength.
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