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Related Experiment Videos

Short- and long-term fluoride release from glass ionomer based liners.

L Forsten1

  • 1Institute of Dentistry, University of Turku, Finland.

Scandinavian Journal of Dental Research
|August 1, 1991
PubMed
Summary
This summary is machine-generated.

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This study measured fluoride release from glass ionomer liners and bases. Most liners released more fluoride initially and long-term compared to filling materials, with two showing minimal release.

Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering

Background:

  • Glass ionomer cements are widely used as liners and bases in dental restorations.
  • Understanding fluoride release is crucial for assessing their anticariogenic potential.

Purpose of the Study:

  • To quantify and compare fluoride ion release from glass ionomer based liners/bases.
  • To evaluate fluoride release over short-term (24 hours) and long-term (6 months) periods.

Main Methods:

  • Specimens of glass ionomer liners/bases and a control filling material were stored in running water.
  • Fluoride ion concentration in the eluent was measured at 24 hours and 6 months.
  • Release kinetics were analyzed to compare different materials.

Main Results:

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  • Fluoride release was significantly higher at the 24-hour time point compared to the 6-month time point for most materials.
  • The majority of glass ionomer liners/bases exhibited greater initial and long-term fluoride release than the control glass ionomer filling material.
  • Two specific liner materials demonstrated minimal fluoride release, approaching the detection limit.

Conclusions:

  • Glass ionomer liners/bases generally show a higher fluoride release profile than conventional glass ionomer filling materials.
  • The fluoride release from these materials is time-dependent, with a notable decrease over six months.
  • Material selection is important, as some liners exhibit very low fluoride release, potentially impacting therapeutic benefits.