Fracture Strength and Stress Distribution in Premolars Restored with Cast Post-and-Cores or Glass-Fiber Posts Considering the Influence of Ferule
Joint Authors
Bacchi, Atais
Caldas, Ricardo Armini
Schmidt, Daniel
Detoni, Mauricio
Matheus Albino Souza, Mauricio
Cecchin, Doglas
Farina, Ana Paula
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-03
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Objectives.
The aim of this study was to evaluate the influence of ferule and the post type on the fracture strength and stress distribution in premolars.
Materials and Methods.
Forty human mandibular premolars were decoronated, allocated in four groups, and restored as follows: CPC-NF: cast post-and-core and absence of ferule; CPC-F: cast post-and-core and presence of ferule; FPC-NF: glass-fiber posts and absence of ferule; FPC-F: glass-fiber posts and presence of ferule.
The fracture strength (FS) and failure patterns were evaluated.
Finite element analysis (FEA) evaluated the stress distribution.
Results.
FS did not differ between CPCs and FPC either in presence or in absence of ferule.
The presence of ferule increased FS with both post types.
Mean values of FS for ferule groups were higher than functional or parafunctional loads reported in literature, which was not the case for FPC-NF when compared to parafunctional loads.
FEA with a functional load showed slightly higher compressive stresses in dentin in the group CPC-NF, which was much lower than the compressive strength of dentin.
Lower percentage of catastrophic failures was observed in nonferule groups irrespective of post type, which was explained by the stress concentration in the cervical root region when FEA with the FS load was simulated.
Conclusion.
Ferule effect was shown to be more important than post type in the analysis.
Both posts showed potential to withstand functional loads irrespective of presence of ferule.
However, the mean FS was lower than parafunctional loads for FPC in the absence of ferule.
American Psychological Association (APA)
Bacchi, Atais& Caldas, Ricardo Armini& Schmidt, Daniel& Detoni, Mauricio& Matheus Albino Souza, Mauricio& Cecchin, Doglas…[et al.]. 2019. Fracture Strength and Stress Distribution in Premolars Restored with Cast Post-and-Cores or Glass-Fiber Posts Considering the Influence of Ferule. BioMed Research International،Vol. 2019, no. 2019, pp.1-7.
https://search.emarefa.net/detail/BIM-1123761
Modern Language Association (MLA)
Bacchi, Atais…[et al.]. Fracture Strength and Stress Distribution in Premolars Restored with Cast Post-and-Cores or Glass-Fiber Posts Considering the Influence of Ferule. BioMed Research International No. 2019 (2019), pp.1-7.
https://search.emarefa.net/detail/BIM-1123761
American Medical Association (AMA)
Bacchi, Atais& Caldas, Ricardo Armini& Schmidt, Daniel& Detoni, Mauricio& Matheus Albino Souza, Mauricio& Cecchin, Doglas…[et al.]. Fracture Strength and Stress Distribution in Premolars Restored with Cast Post-and-Cores or Glass-Fiber Posts Considering the Influence of Ferule. BioMed Research International. 2019. Vol. 2019, no. 2019, pp.1-7.
https://search.emarefa.net/detail/BIM-1123761
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1123761