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.

  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},
  volume={27 5},
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… 
The investigation of bioactivity and mechanical properties of glass ionomer cements prepared from Al 2 O 3 -SiO 2 glass and poly(γ-glutamic acid)
Theglass ionomer cement as one of the dental cements has been subjected to be widespread application in restoring tooth structure. Most of glass ionomer cements employ the poly(acrylic acid) (PAA) as
An in-vitro study to compare the microhardness of glass ionomer cement set conventionally versus set under ultrasonic waves.
Surface microhardness of samples set by ultrasound setting method was significantly higher than samplesset by conventional method, which can be beneficial for the dental patients as when used as a restorative material, it will have a long lasting effect and can also be used in posterior load bearing areas.
Ion release, antimicrobial and physio-mechanical properties of glass ionomer cement containing micro or nanosized hexametaphosphate, and their effect on enamel demineralization
nHMP improves antimicrobial activity and fluoride release, and decreases enamel demineralization, but reduces the physico-mechanical properties of GIC.
Effect of insertion method on knoop hardness of high viscous glass ionomer cements.
The glass ionomer cement Magic Glass ART showed the lowest hardness, while the insertion technique had no significant influence on hardness.
FTIR investigation of polymerisation and polyacid neutralisation kinetics in resin-modified glass-ionomer dental cements.
  • A. Young
  • Chemistry, Medicine
  • 2002
A new diamond ATR FTIR method has been developed to quantify the processes occurring in the resin-modified glass-ionomer cement (RMGIC), and results can help to explain changes in cement properties with time.
Mechanical, antibacterial and bond strength properties of nano-titanium-enriched glass ionomer cement
GIC supplemented with TiO2 NPs (FX-II) is a promising material for restoration because of its potential antibacterial activity and durable restoration to withstand the mastication force.
Comparative Evaluation of Flexural Strength of Glass Ionomer Cement and Cention N in Artificial Medium Over Time Intervals - An In-Vitro Study
  • R. K, Prathyusha P, +5 authors Swetha S. Nair
  • Medicine
    Journal of Evolution of Medical and Dental Sciences
  • 2021
Cention N has a superior flexural strength compared to GIC at all - time intervals and its variation over different time intervals, i.e., after 24 hours, 1 week and 4 weeks.
Effect of early water exposure on the strength of glass ionomer restoratives.
Contrary to current teaching, early exposure to water did not weaken glass ionomer restoratives and a marginal increase in strength was actually observed for some materials.
The influence of protective varnish on the integrity of orthodontic cements.
Varnish application is necessary to preserve the cement and avoid enamel decalcification and Glass-ionomer cements should be protected in order to fully keep their properties, thus contributing to dental health during orthodontic treatment.
Fluoride release profile of a nanofilled resin-modified glass ionomer cement.
The results indicate that the F- release profile of the nanofilled resin- modified GIC is comparable to the resin-modified GIC.


An in vitro investigation of a poly(vinyl phosphonic acid) based cement with four conventional glass-ionomer cements. Part 1: Flexural strength and fluoride release.
The acid used to form the cement could not be used to predict changes in cement strength behaviour with respect to time and its flexural strength at 90 days was comparable to that of HF and VF.
Wear and Microhardness of Glass-Ionomer Cements
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.
The glass polyphosphonate cement: a novel glass-ionomer cement based on poly(vinyl phosphonic acid).
The new cements described in this paper employ a novel polymer, poly(vinyl phosphonic acid), PVPA, as the acidic component, and these cements show a number of important differences in performance in comparison with PAA-based systems.
Factors that influence the setting characteristics of encapsulated glass ionomer cements.
It was shown that increasing the mixing time of cements did not significantly reduce the setting time, and the penetrometer method was a quick and reproducible method of measuring setting time and as such may still be an appropriate method for use in the ISO standards.
Depth microhardness of glass ionomer cements.
The purpose of this study was to observe the effect of different conditions of storage on the surface and in the depth of luting glass ionomer cement by measuring microhardness. The hardness of a
Characterization of glass-ionomer cements. 1. Long term hardness and compressive strength.
Hardness was between the values for a dental silicate cement and a zinc polycarboxylate cement and was substantially at its maximum at 24 hours and after 1 year appeared to be attaining ultimate strength.
Finishing of glass-ionomer cements.
: Glass-ionomer cements offer considerable advantages in certain areas over other restorative materials. These result from their cariostatic properties, their inherent dimensional stability and their
Effects of temperature change on the working and setting characteristics of water-based dental cements.
  • G. Pearson, A. Atkinson
  • Materials Science, Medicine
    Dental materials : official publication of the Academy of Dental Materials
  • 1987
There was generally a lesser period within the total setting time, available for handling the water based materials without encroaching on the setting phase.
Clinical placement of modern glass-ionomer cements.
  • G. Mount
  • Materials Science, Medicine
    Quintessence international
  • 1993
The clinical placement techniques required to ensure success with either glass-ionomer cement or light-activated cements are discussed.
Physical properties of glass-ionomer cements influencing clinical performance.
  • G. Pearson
  • Materials Science, Medicine
    Clinical materials
  • 1991
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