Artigo de periodico

Effect of a crown ferrule on the fracture resistance of endodontically treated teeth restored with prefabricated posts (2006)

• Authors:
  • Pereira, Jefferson Ricardo
  • Ornelas, Fábio de
  • Conti, Paulo César Rodrigues
  • Valle, Accácio Lins do
• USP affiliated authors: CONTI, PAULO CESAR RODRIGUES - FOB ; VALLE, ACCACIO LINS DO - FOB
• Unidade: FOB
• DOI: 10.1016/j.prosdent.2005.10.019
• Subjects: RESISTÊNCIA DOS MATERIAIS; ENDODONTIA; ADESIVOS DENTINÁRIOS
• Language: Inglês
• Abstract: Statement of problem: Root fracture is one of the most serious complications following restoration of endodontically treated teeth. Purpose: The purpose of this study was to compare the fracture strengths of endodontically treated teeth using posts and cores and variable quantities of coronal dentin located apical to core foundations with corresponding ferrule designs incorporated into cast restorations. Material and methods: Fifty freshly extracted canines were endodontically treated. The teeth were randomly divided into groups of 10 and prepared according to 5 experimental protocols. Control group: teeth with custom cast post and core; 0-mm group: teeth without coronal structure (no ferrule); 1-mm, 2-mm, and 3-mm groups: teeth with 1 mm, 2 mm, and 3 mm of remaining coronal tooth structure (1-, 2-, and 3-mm ferrule), respectively. All specimens in 0-mm through 3-mm (noncontrol) groups were restored with a prefabricated post (Screw-Post) and composite resin (Z100) core located superior to the different tooth structure heights. All teeth were restored with complete metal crowns. The fracture resistance (N) was measured in a universal testing machine at 45 degrees to the long axis of the tooth until failure. Data were analyzed by 1-way analysis of variance and Tukey test (a=.05). Results: Significant differences (P<.001) were found among the mean fracture forces of the test groups (control group: S1S.2 N; 0-mm, 1-mm, 2-mm, and 3-mm groups: 561.0 N, 627.6 N,745.3 N, and 907.1 N, respectively). When the mode of failure was evaluated, all failures in the control group occurred due to root fracture, and all failures in the 0-mm group occurred due to core fracture. The majority of failures in the other groups occurred due to crown cementation failure. Conclusion: The results of this study showed that an increased amount of coronal dentin significantly increases the fracture resistance of endodontically treated teeth
• Imprenta:
  • Publisher place: St. Louis
  • Date published: 2006
• Source:
  • Título: Journal of Prosthetic Dentistry
  • ISSN: 0022-3913
  • Volume/Número/Paginação/Ano: v. 95, n. 1, p. 50-54, Jan. 2006

Informações sobre o DOI: 10.1016/j.prosdent.2005.10.019 (Fonte: oaDOI API)
• Este periódico é de assinatura
• Este artigo NÃO é de acesso aberto
  
• Cor do Acesso Aberto: closed

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• ABNT

  PEREIRA, Jefferson Ricardo et al. Effect of a crown ferrule on the fracture resistance of endodontically treated teeth restored with prefabricated posts. Journal of Prosthetic Dentistry, v. 95, n. Ja 2006, p. 50-54, 2006Tradução . . Disponível em: https://doi.org/10.1016/j.prosdent.2005.10.019. Acesso em: 01 jan. 2026.

• APA

  Pereira, J. R., Ornelas, F. de, Conti, P. C. R., & Valle, A. L. do. (2006). Effect of a crown ferrule on the fracture resistance of endodontically treated teeth restored with prefabricated posts. Journal of Prosthetic Dentistry, 95( Ja 2006), 50-54. doi:10.1016/j.prosdent.2005.10.019

• NLM

  Pereira JR, Ornelas F de, Conti PCR, Valle AL do. Effect of a crown ferrule on the fracture resistance of endodontically treated teeth restored with prefabricated posts [Internet]. Journal of Prosthetic Dentistry. 2006 ; 95( Ja 2006): 50-54.[citado 2026 jan. 01 ] Available from: https://doi.org/10.1016/j.prosdent.2005.10.019

• Vancouver

  Pereira JR, Ornelas F de, Conti PCR, Valle AL do. Effect of a crown ferrule on the fracture resistance of endodontically treated teeth restored with prefabricated posts [Internet]. Journal of Prosthetic Dentistry. 2006 ; 95( Ja 2006): 50-54.[citado 2026 jan. 01 ] Available from: https://doi.org/10.1016/j.prosdent.2005.10.019

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