1. Transdentinal effects of S-PRG fillers on odontoblast-like cells.
- Author
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Mendes Soares IP, Anselmi C, Fernandes LO, Peruchi V, de Lima CM, Pires MLBA, Ribeiro RAO, de Souza Costa CA, and Hebling J
- Subjects
- Glass Ionomer Cements pharmacology, Glass Ionomer Cements chemistry, Glass Ionomer Cements toxicity, Animals, Microscopy, Electron, Scanning, Materials Testing, Surface Properties, Mice, Cells, Cultured, Gene Expression drug effects, Acrylic Resins, Silicon Dioxide, Odontoblasts drug effects, Cell Survival drug effects, Dentin drug effects
- Abstract
Objectives: To investigate the transdentinal effects of surface reaction-type pre-reacted glass-ionomer (S-PRG) fillers on odontoblast-like cells., Methods: An eluate of S-PRG fillers was obtained by dissolving the particles in distilled water (1:1 m/v). Dentin discs with similar permeability were mounted into artificial pulp chambers and MDPC-23 cells were seeded on their pulpal surface. The occlusal surface was treated with (n = 10): ultrapure water (negative control - NC), hydrogen peroxide (positive control - PC), S-PRG eluate exposure for 1 min (S-PRG 1 min), or S-PRG filler eluate exposure for 30 min (S-PRG 30 min). After 24 h, cell viability (alamarBlue) and morphology (SEM) were evaluated. The extract obtained from transdentinal diffusion was applied to MDPC-23 pre-cultured in plates for another 24 h to evaluate viability (alamarBlue, 1, 3, and 7 days), gene expression of Col1a1, Alpl, Dspp, and Dmp1 (RT-qPCR, 1 and 7 days), and mineralization (Alizarin Red, 7 days). Data were analyzed with ANOVA (α = 5 %)., Results: While S-PRG 1 min did not differ from NC, S-PRG 30 min reduced 17.9 % viability of cells from discs. S-PRG treatments resulted in low cell detaching from dentin, and the remaining cells exhibited typical morphology or minor cytoplasmic contraction. S-PRG 30 min slightly increased cell viability (6 %) 1 day after contact with the extract. S-PRG treatments upregulated the expression of the investigated genes, especially after 1 day. S-PRG 30 min stimulated mineralization activity by 39.7 %., Conclusions: S-PRG filler eluate does not cause transdentinal cytotoxicity on odontoblast-like cells, and long-term exposure can stimulate their dentinogenic-related mineralization activity., Significance: The transdentinal elution of ions from S-PRG fillers is not expected to be harmful to the dental pulp and may exert bioactive effects by inducing dentin matrix deposition through the metabolism of underlying odontoblasts., (Copyright © 2024 Elsevier Inc. All rights reserved.)
- Published
- 2024
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