Abstract
Objectives: The aim of this study was to evaluate the mineralizing potential of ions released from surface pre-reacted glass-ionomer (S-PRG) fillers on mineral induction by phosphoprotein in vitro. Methods: Phosvitin was used as a model of dentin phosphoprotein in this study. Phosvitin was immobilized on agarose beads with divinyl sulfone. Five aliquots of phosvitin-immobilized agarose beads were incubated in control or experimental mineralizing solution. The experimental mineralizing solutions were made from eluates of resin filled with S-PRG fillers. The beads were incubated at 37 °C in a shaking water bath, and aliquots were taken at several time points during the incubation. Then the beads were analyzed for calcium by atomic absorption spectrometry. Results: Phosvitin-immobilized agarose beads induced mineral formation after incubation for 5.3 h in the metastable solution without ions eluted from S-PRG fillers. Undiluted eluates significantly reduced mineral induction time. SEM observation and X-ray diffraction revealed larger apatite crystals on the beads incubated with eluates of S-PRG fillers than with the control. Conclusions: S-PRG fillers may play a role in mineral induction.
| Original language | English |
|---|---|
| Pages (from-to) | 72-79 |
| Number of pages | 8 |
| Journal | Journal of Dentistry |
| Volume | 39 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2011 Jan |
| Externally published | Yes |
Keywords
- Composite resin
- Crystallite
- Dentin remineralization
- Eluate
- Hydroxyapatite
- Ions
- Mineral induction
- Phosphoprotein
- S-PRG fillers
- X-ray diffraction
ASJC Scopus subject areas
- Dentistry(all)