Fracture resistance of endodontically treated teeth restored by different FRC posts: An in vitro study.
Artigo
em Inglês
| IMSEAR
| ID: sea-139734
ABSTRACT
Background:
Posts and cores are often required for restoration of pulpless teeth and to provide retention and resistance for a complete crown, but conventional posts may increase the root fracture.Objective:
This study was performed to compare the root fracture resistance of extracted teeth treated with different fibers reinforced with composite posts and treated teeth with conventional post and core systems. Materials andMethods:
Root canal therapy was performed for 50 mandibular first premolars. The coronal portion of each tooth was amputated, and five post and core systems (cast, polyethylene woven, glass, carbon, and quartz fiber posts) were compared. Acrylic resin blocks were used for mounting, using a layer of elastomeric impression material covering the roots. The load was applied axially and measured with a universal testing machine. Results andConclusion:
Significantly, cast posts and cores had a higher failure threshold including teeth fracture; whereas, fiber posts failure was due to core fracture, with or without fractures in coronal portion of posts. Difference in FRC posts did not provide any significant difference in the load failure and the mode of fracture.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Tratamento do Canal Radicular
/
Fraturas dos Dentes
/
Raiz Dentária
/
Dente Pré-Molar
/
Teste de Materiais
/
Humanos
/
Análise de Variância
/
Técnica para Retentor Intrarradicular
/
Retenção em Prótese Dentária
/
Planejamento de Prótese Dentária
Idioma:
Inglês
Ano de publicação:
2009
Tipo de documento:
Artigo
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