Marovic, Danijela and Tarle, Zrinka and Hiller, Karl Anton and Mueller, Rainer and Ristic, Mira and Rosentritt, Martin and Skrtic, Drago and Schmalz, Gottfried (2014) Effect of silanized nanosilica addition on remineralizing and mechanical properties of experimental composite materials with amorphous calcium phosphate. CLINICAL ORAL INVESTIGATIONS, 18 (3). pp. 783-792. ISSN 1432-6981, 1436-3771
Full text not available from this repository. (Request a copy)Abstract
Experimental composite resins with amorphous calcium phosphate (ACP) have the potential to regenerate demineralized tooth structures. The aim of the study was to investigate the effect of the addition of silanized silica nanofillers to the ACP-based composites on their mechanical properties and the kinetics of calcium and phosphate release. The test materials comprised 5 wt% (5-ACP) or 10 wt% (10-ACP) of silanized silica admixed to the 40 wt% ACP and 50 or 55 wt% resin. The ACP control (0-ACP) contained 40 wt% ACP and 60 wt% resin. Additionally, composite material CeramX (Dentsply, Germany) was included as control. Three-point bending test was performed to calculate flexural strength and modulus of elasticity. Inductively coupled plasma atomic emission spectroscopy was used for measurement of ion release. The micromorphology of calcium phosphate depositions on composite samples has been qualitatively evaluated using a scanning electron microscope. The results were analyzed using Mann-Whitney and Wilcoxon rank sum tests (alpha < 0.05). Ion release was enhanced by the silica fillers, when compared to the 0-ACP. Although not statistically significant, flexural strength of 10-ACP was improved by 46 % compared to 0-ACP. Flexural modulus of 5-ACP was significantly higher than 0-ACP. The admixture of silanized fillers seems to be a promising approach for the improvement of mechanical and remineralizing properties of ACP composite resins. ACP-based composite resins with modified composition could serve as an effective remineralizing aid as base materials in restorative dental medicine.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SPHERICAL SILICA FILLER; GLASS-IONOMER CEMENT; DENTAL COMPOSITES; PHOSPHATE/METHACRYLATE COMPOSITES; RESIN COMPOSITES; GAP-FORMATION; HYDROXYAPATITE; PRECIPITATION; NANOPARTICLES; CONVERSION; Amorphous calcium phosphate; Silicon dioxide; Composite resins; Flexural strength; Tooth remineralization |
| Subjects: | 500 Science > 540 Chemistry & allied sciences 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Zahnärztliche Prothetik Medicine > Lehrstuhl für Zahnerhaltung und Parodontologie > Dr. rer. nat. Karl-Anton Hiller Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Nov 2019 09:51 |
| Last Modified: | 15 Nov 2019 09:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10388 |
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