Journal of
Dentistry and Oral Hygiene

  • Abbreviation: J. Dent. Oral Hyg.
  • Language: English
  • ISSN: 2141-2472
  • DOI: 10.5897/JDOH
  • Start Year: 2009
  • Published Articles: 137

Full Length Research Paper

Evaluation of linear-elastic fracture toughness of the teeth restored with different post and core systems

Clovis Lamartine De Moraes Melo Neto
  • Clovis Lamartine De Moraes Melo Neto
  • Department of Prosthodontics, State University of Maringa, Parana, Brazil.
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Paulo Afonso Franciscone
  • Paulo Afonso Franciscone
  • Department of Operative Dentistry, Endodontology and Dental Materials, Bauru School of Dentistry, University of Sao Paulo, Brazil.
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Jose Mondelli
  • Jose Mondelli
  • Department of Operative Dentistry, Endodontology and Dental Materials, Bauru School of Dentistry, University of Sao Paulo, Brazil.
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Silvia Sbeghen Sabio
  • Silvia Sbeghen Sabio
  • Department of Prosthodontics, State University of Maringa, Parana, Brazil.
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Rodrigo Lorenzi Poluha
  • Rodrigo Lorenzi Poluha
  • Department of Prosthodontics, State University of Maringa, Parana, Brazil.
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And Sergio Sabio*
  • And Sergio Sabio*
  • Department of Prosthodontics, State University of Maringa, Parana, Brazil.
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  •  Received: 19 April 2015
  •  Accepted: 13 July 2015
  •  Published: 31 August 2015

Abstract

The purpose of this in vitro study was to investigate the linear-elastic fracture toughness of endodontically treated teeth after restoration with prefabricated post systems against root restored with metal cast post-core. Thirty two maxillary canines with similar anatomic characteristic were sectioned to obtain the same length for all specimens. Group I consisted of 8 roots restored with FibreKor system; Group II consisted of 8 roots restored with C-Post system; Group III consisted of 8 roots restored with metal cast post-core (the diameter was similar FibreKor system); and Group IV consisted of 8 roots restored with metal cast post-core (the diameter was similar C-Post system). Specimens were cemented with dual-cure bonding agent (Dual-Cement and Unibond). These specimens were then mounted in acrylic blocks and tested in a universal testing machine (Kratos). Each sample was angled at 135° to the long axis of the root. A constantly increasing force was applied until the root fracture. Means (kilogram force, kgf) and standard deviations for four groups were found to be: Group I, 31.01 (2.08); Group II, 41.32 (3.44); Group III, 49.17 (2.09); Group IV, 47.65 (2.94). The present research indicated that root restored with metal post was statistically significant (p<0.05), more resistant to fracture over root restored with non metal post.

 

Key words: C-Post system, linear-elastic fracture, endodontic, teeth.

Copyright © 2024 Author(s) retain the copyright of this article.

This article is published under the terms of the Creative Commons Attribution License 4.0

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