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Effects of filler type and content on mechanical properties of photopolymerizable composites measured across two-dimensional combinatorial arrays.
- Source :
-
Acta biomaterialia [Acta Biomater] 2009 Jul; Vol. 5 (6), pp. 2084-94. Date of Electronic Publication: 2009 Feb 05. - Publication Year :
- 2009
-
Abstract
- Multicomponent formulations coupled with complex processing conditions govern the final properties of photopolymerizable dental composites. In this study, a single test substrate was fabricated to support multiple formulations with a gradient in degree of conversion (DC), allowing the evaluation of multiple processing conditions and formulations on one specimen. Mechanical properties and damage response were evaluated as a function of filler type/content and irradiation. DC, surface roughness, modulus, hardness, scratch deformation and cytotoxicity were quantified using techniques including near-infrared spectroscopy, laser confocal scanning microscopy, depth-sensing indentation, scratch testing and cell viability. Scratch parameters (depth, width, percent recovery) were correlated to composite modulus and hardness. Total filler content, nanofiller and irradiation time/intensity all affected the final properties, with the dominant factor for improved properties being a higher DC. This combinatorial platform accelerates the screening of dental composites through the direct comparison of properties and processing conditions across the same sample.
Details
- Language :
- English
- ISSN :
- 1878-7568
- Volume :
- 5
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Acta biomaterialia
- Publication Type :
- Academic Journal
- Accession number :
- 19282260
- Full Text :
- https://doi.org/10.1016/j.actbio.2009.01.043