Stress Distributions for Hybrid Composite Endodontic Post Designs with and without a Ferrule: FEA Study
| Autor: | Massimo Martorelli, Antonio Gloria, David C. Watts, Pietro Ausiello, Saverio Maietta |
|---|---|
| Přispěvatelé: | Ausiello, P., Gloria, A., Maietta, S., Watts, D. C., Martorelli, M., Publica |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics Endodontic post design medicine.medical_treatment Composite number Finite element analysi 02 engineering and technology finite element analysis macromolecular substances polyetherimide composites Crown (dentistry) Article lcsh:QD241-441 Stress (mechanics) 03 medical and health sciences chemistry.chemical_compound Polyetherimide composite 0302 clinical medicine lcsh:Organic chemistry stomatognathic system medicine Composite material Longitudinal axis Reverse engineering Anterior teeth Polyetherimide composites Finite element analysis Ferrule 030206 dentistry General Chemistry 021001 nanoscience & nanotechnology Polyetherimide Finite element method chemistry Computer-Aided Design 0210 nano-technology |
| Zdroj: | Ausiello, P, Gloria, A, Maietta, S, Watts, D C & Martorelli, M 2020, ' Stress Distributions for Hybrid Composite Endodontic Post Designs with and without a Ferrule: FEA Study ', Polymers, vol. 12, no. 8, 1836, pp. 1836 . https://doi.org/10.3390/polym12081836 Polymers Polymers, Vol 12, Iss 1836, p 1836 (2020) Volume 12 Issue 8 |
| DOI: | 10.3390/polym12081836 |
| Popis: | The aim of the current work was to analyze the influence of the ferrule effect for hybrid composite endodontic post designs consisting of carbon (C) and glass (G) fiber-reinforced polyetherimide (PEI), in upper canine teeth. Starting from theoretical designs of C-G/PEI hybrid composite posts with different Young&rsquo s moduli (Post A&mdash 57.7 GPa, Post B&mdash 31.6 GPa, Post C&mdash graduated from 57.7 to 9.0 GPa in the coronal&ndash apical direction) in endodontically treated anterior teeth, the influence of the ferrule effect was determined through finite element analysis (FEA). On the surface of the crown, a load of 50 N was applied at 45° to the longitudinal axis of the tooth. Maximum principal stresses were evaluated along the C-G/PEI post as well as at the interface between the surrounding tooth structure and the post. Maximum stress values were lower than those obtained for the corresponding models without a ferrule. The presence of a ferrule led to a marked decrease of stress and gradients especially for posts A and B. A less marked effect was globally found for Post C, except in a cervical margin section along a specific direction, where a significant decrease of the stress was probably due to local geometric features, compared to the model without a ferrule. The presence of a ferrule did not generally provide a marked benefit in the case of the graduated Post C, in comparison to other C-G/PEI posts. The outcomes suggest how such a hybrid composite post alone should be sufficient to optimize the stress distribution, dissipating stress from the coronal to the apical end. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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