Related Experiment Videos
Fluoride release and uptake by glass ionomers
1Institute of Dentistry, University of Turku, Finland.
Scandinavian Journal of Dental Research
|June 1, 1991
Summary
Fluoride release from glass ionomer materials increases after fluoride treatment and is higher in fresh samples. Long-term storage in water stabilizes fluoride release from glass ionomers.
Area of Science:
- Dental Materials Science
- Biomaterials Research
- Fluoride Chemistry
Background:
- Glass ionomers are widely used dental restorative materials.
- Understanding fluoride release is crucial for their cariostatic effect.
- Factors influencing fluoride release require further investigation.
Purpose of the Study:
- To investigate fluoride release from glass ionomers under various conditions.
- To compare fluoride release from fresh versus aged glass ionomer materials.
- To assess the long-term fluoride release profile of glass ionomers.
Main Methods:
- Glass ionomer specimens of varying ages (7, 15, and 29 months) were used.
- Specimens were subjected to fluoride treatment (50 ppm) and storage in running water.
- Fluoride release was quantified using established measurement techniques.
Main Results:
- Fluoride-treated glass ionomers exhibited significantly higher fluoride release than untreated ones.
- Fresh glass ionomer specimens released 3-10 times more fluoride than those aged for 3 days.
- Composite resin specimens showed no comparable fluoride release enhancement.
- Fluoride release from glass ionomers stabilized to a constant level by the second year of storage.
Conclusions:
- Fluoride treatment enhances fluoride release from glass ionomers, a phenomenon not observed in composite resins.
- Material age significantly impacts initial fluoride release, with fresh materials releasing more fluoride.
- Glass ionomers demonstrate a stable fluoride release profile after prolonged storage, contributing to sustained therapeutic effects.