A comparison of fluoride release from various dental materials
| Autor: | Rossouw Rj, T J van Wyk Kotze, S R Grobler |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Materials science
Thin layer Glass ionomer cement Dentistry Composite Resins Statistics Nonparametric Fluorides chemistry.chemical_compound Fluoride release Materials Testing General Dentistry Analysis of Variance Compomers business.industry Silicates Glass ionomers Cariostatic Agents Resin Cements Resins Synthetic chemistry Glass Ionomer Cements Dentin-Bonding Agents Methacrylates business Fluoride Nuclear chemistry |
| Zdroj: | Journal of Dentistry. 26:259-265 |
| ISSN: | 0300-5712 |
| DOI: | 10.1016/s0300-5712(97)00011-0 |
| Popis: | Objective: The aim of this study was to determine, in vitro, the relative short- and long-term fluoride release from four resin-modified glass ionomers (Fuji II LC, Vitremer, Enforce & Advance), a polyacid-modified composite resin (Dyract compomer) and a bonding agent (OptiBond). Methods: All the materials were prepared as outlined by the manufacturers. Circular discs of the materials mentioned were suspended in water for up to 300 days and the non-cumulative 24-h fluoride release was determined potentiometrically at chosen times. Results: The amounts of fluoride released during the first day were Vitremer (1.46 μg mm−2), Advance (1.18 μg mm−2), Fuji (1.08 μg mm−2), Optibond (0.33 μg mm−2), Dyract (0.31 μg mm−2) and Enforce (0.15 μg mm−2). After the second day the sequence changed slightly and remained approximately the same for the rest of the 300-day period. There was also an increase in the fluoride release during the 60–200-day period relative to the previous period. Conclusion: In general the most fluoride was released by Advance and not by Fuji II LC or Vitremer. For most materials, fluoride is still released after 300 days. Furthermore, even a thin layer of bonding agent released a relatively high amount of fluoride (volume-wise the most) at the beginning. It is deduced that even the release of relatively low amounts of fluoride may result in significant concentrations of fluoride in a microleakage gap. |
| Databáze: | OpenAIRE |
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