Long-term surface micro-hardness of resin-modified glass ionomers.

@article{Kanchanavasita1998LongtermSM,
  title={Long-term surface micro-hardness of resin-modified glass ionomers.},
  author={W. Kanchanavasita and H. M. Anstice and Gavin J Pearson},
  journal={Journal of dentistry},
  year={1998},
  volume={26 8},
  pages={
          707-12
        }
}
Surface hardness change of restorative filling materials stored in saliva.
Hydrolytic degradation and cracks in resin-modified glass-ionomer cements.
TLDR
It was concluded that the prevalent mechanism of long-term hydrolytic degradation was based on the slow formation of cracks, whereas only in the early stage of storage did absorption occur quickly in accordance with the Fickian diffusion.
Effect of light curing on micro-hardness of resin-modified versus conventional glass- ionomer restoration as a function of depth and time
TLDR
Inclusion of resins in the RMGI does not improve the surface microhardness of these materials, and the polymerization and acid/ base reactions produced in RMGI did not insure adequate polymerization especially in thicker layers.
Influence on the Hardness of Resin Modified Glass Ionomer Cements following Exposure to High and Low Fluoride Containing Toothpastes
TLDR
RMGICs used in this study proved to be materials which exhibit increase in hardness after exposure to protocols practiced in the authors' research for its recharge, which are fluoride releasing restorative materials.
Effects of different solutions on the surface hardness of composite resin materials.
TLDR
In this study, the surface hardness of five light-cured composite resins were evaluated and it was found that the hardness values of composite materials were statistically different in different immersion solutions.
An FTIR study of the effects of artificial saliva on the physical characteristics of the glass ionomer cements used for art.
  • H. Yip, Wai Ming To
  • Medicine, Materials Science
    Dental materials : official publication of the Academy of Dental Materials
  • 2005
Hardness of three resin-modified glass-ionomer restorative materials as a function of depth and time.
  • H. Roberts, D. Berzins, D. Charlton
  • Medicine, Materials Science
    Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.]
  • 2009
TLDR
Although certain RMGI materials demonstrate a potential for post light-activation chemically initiated resin polymerization and/or polyalkenoate acid/base reaction, these reactions may not be sufficient to ensure that the material is adequately polymerized for long-term success.
Commentary. Hardness of three resin-modified glass-ionomer restorative materials as a function of depth and time.
  • S. Bayne
  • Medicine, Materials Science
  • 2009
TLDR
Although certain RMGI materials demonstrate a potential for post light-activation chemically initiated resin polymerization and/or polyalkenoate acid/base reaction, these reactions may not be sufficient to ensure that the material is adequately polymerized for long-term success.
Influence of 0.05% sodium fluoride solutions on microhardness of resin-modified glass ionomer cements
TLDR
It may be concluded that fluoride-containing solutions influenced the tested characteristics of materials, mainly of Vitremer.
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References

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Long-term mechanical characteristics of resin-modified glass ionomer restorative materials.
  • S. Uno, W. Finger, U. Fritz
  • Medicine, Materials Science
    Dental materials : official publication of the Academy of Dental Materials
  • 1996
Water sorption characteristics of resin-modified glass-ionomer cements.
Wear and Microhardness of Glass-Ionomer Cements
TLDR
It is concluded that glass-ionomer cements with composition similar to those evaluated here are not acceptable for posterior occlusal application, but some compositional changes may enhance their performance in stress-bearing applications.
Barcoll hardness of resin-modified glass-ionomer cements and a compomer.
TLDR
For some hybrid ionomers (e.g., Photac-Fil), light curing is a more essential step than for others to obtain adequate hardness values, and the use or nonuse of light curing was also significant.
Strength and setting behavior of resin-modified glass ionomer cements.
TLDR
Considering the improved fracture strength and surface hardness, it was concluded that the resin-modified GICs present an interesting material for further development.
Depth microhardness of glass ionomer cements.
Depth of cure of resin-modified glass ionomers.
Properties of resin-modified glass-ionomer restorative materials and two polyacid-modified resin composite materials.
TLDR
The hybrid resin composite exhibited the lowest resistance to wear caused by brushing and the strength properties of the tested resin-modified glass-ionomer materials and the polyacid-modified resin composite materials were inferior to those of the hybrids.
Comparative Physico-mechanical Characterization of New Hybrid Restorative Materials with Conventional Glass-ionomer and Resin Composite Restorative Materials
TLDR
It can be concluded that the physico-mechanical properties of these hybrid restorative materials probably have yet to achieve their optimum properties, and their mechanical strength is inadequate for use in stress-bearing areas and their appearance keeps them from use where esthetics is a primary concern.
The development of surface hardness in visible light-cured posterior composites.
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