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Fracture strength of flared bovine roots restored with different intraradicular posts
Clavijo, Victor Grover Rene; Reis, José Maurício dos Santos Nunes; Kabbach, William; Silva, André Luis Faria e; Oliveira Junior, Osmir Batista de; Andrade, Marcelo Ferrarezi de.
Afiliação
  • Clavijo, Victor Grover Rene; São Paulo State University. Araraquara Dental School. Department of Restorative Dentistry. Araraquara. BR
  • Reis, José Maurício dos Santos Nunes; São Paulo State University. Araraquara Dental School. Department of Dental Materials and Prosthodontics. Araraquara. BR
  • Kabbach, William; São Paulo State University. Araraquara Dental School. Department of Restorative Dentistry. Araraquara. BR
  • Silva, André Luis Faria e; State University of Campinas. Piracicaba Dental School. Department of Restorative Dentistry. Piracicaba. BR
  • Oliveira Junior, Osmir Batista de; São Paulo State University. Araraquara Dental School. Department of Restorative Dentistry. Araraquara. BR
  • Andrade, Marcelo Ferrarezi de; São Paulo State University. Araraquara Dental School. Department of Restorative Dentistry. Araraquara. BR
J. appl. oral sci ; J. appl. oral sci;17(6): 574-578, Nov.-Dec. 2009. ilus, tab
Article em En | LILACS | ID: lil-534422
Biblioteca responsável: BR1.1
ABSTRACT

OBJECTIVE:

The aim of this study was to evaluate the fracture strength and failure mode of flared bovine roots restored with different intraradicular posts. MATERIAL AND

METHODS:

Fifty bovine incisors with similar dimensions were selected and their roots were flared until 1.0 mm of dentin wall remained. Next, the roots were allocated into five groups (n=10) GI- cast metal post-and-core; GII- fiber posts plus accessory fiber posts; GIII- direct anatomic post; GIV- indirect anatomic post and GV- control (specimens without intraradicular post). A polyether impression material was used to simulate the periodontal ligament. After periodontal ligament simulation, the specimens were subjected to a compressive load at a crosshead speed of 0.5 mm/min in a servo-hydraulic testing machine (MTS 810) applied at 135¨¬ to the long axis of the tooth until failure. The data (N) were subjected to ANOVA and Tukey's post-hoc test (¥á=0.05).

RESULTS:

GI and GIV presented higher fracture strength (p<0.05) than GII. GIII presented intermediate values without statistically significant differences (p>0.05) from GI, GII and GIV. Control specimens (GV) produced the lowest fracture strength mean values (p<0.05). Despite obtaining the highest mean value, GI presented 100 percent of unfavorable failures. GII presented 20 percent of unfavorable failures. GIII, GIV and GV presented only favorable failures.

CONCLUSIONS:

Although further in vitro and in vivo studies are necessary, the results of this study showed that the use of direct and indirect anatomic posts in flared roots could be an alternative to cast metal post-and-core.
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Texto completo: 1 Coleções: 01-internacional Base de dados: LILACS Assunto principal: Fraturas dos Dentes / Raiz Dentária / Técnica para Retentor Intrarradicular Limite: Animals Idioma: En Revista: J. appl. oral sci Assunto da revista: ODONTOLOGIA Ano de publicação: 2009 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil
Texto completo
Adicionar na Minha BVS
Imprimir
XML
Buscar no Google
Texto completo: 1 Coleções: 01-internacional Base de dados: LILACS Assunto principal: Fraturas dos Dentes / Raiz Dentária / Técnica para Retentor Intrarradicular Limite: Animals Idioma: En Revista: J. appl. oral sci Assunto da revista: ODONTOLOGIA Ano de publicação: 2009 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil