An in vitro investigation of a poly (vinyl phosphonic acid) based cement with four conventional glass-ionomer cements Part 2: Maturation in relation to surface hardness.

@article{KhouwLiu1999AnIV,
  title={An in vitro investigation of a poly (vinyl phosphonic acid) based cement with four conventional glass-ionomer cements Part 2: Maturation in relation to surface hardness.},
  author={V H Khouw-Liu and H. M. Anstice and Gavin J Pearson},
  journal={Journal of dentistry},
  year={1999},
  volume={27 5},
  pages={
          359-65
        }
}
OBJECTIVE To investigate the surface hardness of four conventional glass-ionomer cements: Ketac-Molar (KM), HiFi (HF), Vivaglass Fil (VF), Ketac-Fil (KF) and a newly developed glass polyphosphonate based cement, Diamond Carve (DC) at different maturation times in water and to investigate the effects of early water exposure on their surface hardness. METHOD Disc specimens (10 mm diameter, 1 mm thick) were prepared and mould stored at 37 degrees C. The effect of different maturation times (15… 
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This paper considers the modern commercial glass-ionomer cements and compares their variable physical properties with specific reference to working and setting times, powder liquid ratios used
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