Fracture strength assessment of teeth endodontically treated, restored with prefabricated posts and compound resins, and varying amount of remaining coronal dental structure / Avaliação da resistência à fratura de dentes tratados endodonticamente com pinos pré-fabricados e resinas compostas variando a quantidade de remanescente dentário coronal

AUTOR(ES)
DATA DE PUBLICAÇÃO

2003

RESUMO

The aim of this study was to evaluate the remaining coronal dental structure influence of endodontically treated teeth, restored with prefabricated posts and two different types of resin filling cores, a dual cure resin (Enforce Core) and a photopolymerizing resin (Z-250). 40 extracted upper canine human teeth were used, divided into four groups of 10 specimens each: Group I – with coronal dental structure of 3mm restored with Enforce Core; Group II – with coronal dental structure of 3mm restored with Z-250; Group III – without any remaining coronal dental structure restored with Enforce Core; Group IV – without any remaining coronal dental structure restored with Z-250. After the complete restoration, the teeth were taken to a universal test machine, and then submitted to compression forces at 45º, until reaching the fracture of the restoration. The analysis of the results (ANOVA, p>0,05) showed no statistically significant difference between the teeth with or without coronal dental structure. In relation to the material used for the coronal filling, there has been a statistically significant difference. Higher fracture strength values were found in the group restored with photopolymerizing resin.

ASSUNTO(S)

reabilitação bucal resinas compostas pinos dentários fraturas dos dentes

ACESSO AO ARTIGO

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