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Related Experiment Videos

Fluoride release and neutralizing effect by resin-based materials.

Toshiyuki Itota1, Omar T Al-Naimi, Thomas E Carrick

  • 1Dental Materials Science Unit, School of Dental Sciences, University of Newcastle upon Tyne, Newcastle upon Tyne, United Kingdom. itota@md.okayama-u.ac.jp

Operative Dentistry
|September 1, 2005
PubMed
Summary
This summary is machine-generated.

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Resin-based dental materials containing fluoride showed varying abilities to release fluoride and neutralize acids. The type of fluoride incorporated significantly impacts their performance in both water and acidic environments over time.

Area of Science:

  • Dental Materials Science
  • Biomaterials Research
  • Fluoride Chemistry

Background:

  • Resin-based dental materials are widely used for restorations.
  • Fluoride-releasing materials aim to prevent secondary caries.
  • Understanding fluoride release and acid neutralization is crucial for material selection.

Purpose of the Study:

  • To evaluate the fluoride-releasing and acid-neutralizing capacities of different resin-based materials.
  • To compare material performance in water versus an acidic environment (lactic acid).
  • To assess the effect of aging on these properties.

Main Methods:

  • Four fluoride-containing resin-based materials (two composites, two giomers) and one resin-modified glass-ionomer cement control were tested.
  • Fluoride release and pH changes were measured over 10 weeks in water and lactic acid solutions.

Related Experiment Videos

  • Materials included Heliomolar, UniFil S, Beautifil, Reactmer paste, and Fuji II LC.

    • Main Results:

    • UniFil S and Beautifil showed significantly higher fluoride release in lactic acid compared to water.
    • Most materials neutralized storage media, but this ability decreased with aging in acid, except for Fuji II LC.
    • Heliomolar did not neutralize the storage media.

    Conclusions:

    • The type of fluoride incorporated into resin-based materials influences their fluoride release and acid neutralization.
    • Material performance, particularly in acidic conditions, can degrade over time.
    • Fuji II LC demonstrated sustained neutralizing ability, suggesting its suitability in acidic environments.