Stress prediction in a central incisor with intra-radicular restorations
| Autor: | M. V. Pereira, Fathi Aref Darwish, Martha Vasconcellos Amarante, Arnaldo Freitas Camarão |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Materials science
cast gold post stomatognathic system Shear stress Dentin medicine von Mises equivalent stresses lcsh:TA401-492 von Mises yield criterion General Materials Science Maxillary central incisor Composite material carbon fiber post Mechanical Engineering Epoxy Condensed Matter Physics Finite element method Equivalent stress stomatognathic diseases medicine.anatomical_structure Shear (geology) Mechanics of Materials visual_art visual_art.visual_art_medium lcsh:Materials of engineering and construction. Mechanics of materials shear stresses |
| Zdroj: | Materials Research, Vol 14, Iss 2, Pp 189-194 (2011) Materials Research, Volume: 14, Issue: 2, Pages: 189-194, Published: 29 APR 2011 Materials Research v.14 n.2 2011 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
| ISSN: | 1516-1439 |
| Popis: | A 2D finite element analysis was applied to calculate shear and von Mises equivalent stresses developed, under masticatory loading, in an upper central incisor restored with cast gold post and carbon fiber reinforced epoxy resin post. Based on the predicted shear stress levels, it is concluded that the gold post model is more prone to shear failure along the post-dentin interface. Whereas shear stress concentration also occurs in both models at the core-crown interface, the stress level predicted there is higher for the carbon fiber post model which would be more susceptible to crown displacement. Finally, the prediction of von Mises equivalent stress indicates a non-uniform distribution, with the stress preferentially concentrated in the gold post along its interface with the tooth dentin. For the carbon fiber post restored model, on the other hand, the von Mises stresses are more uniformly distributed achieving its maximum level in the tooth dentin. |
| Databáze: | OpenAIRE |
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