Root canal flare: Effect on push-out strength of relined posts

The aim of this study was to investigate the push-out bond strength (PBS) of resin-relined and non-relined glass fiber posts (GFP) luted to flared root canals. Root canals of 80 bovine incisors were enlarged to obtain 40 mildly flared and 40 over-flared post spaces. Half of the specimens from each g...

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Bibliographic Details
Published in:International journal of adhesion and adhesives 2014-12, Vol.55, p.139-144
Main Authors: Schetini, Daniela Figueiredo Fonseca, Ferreira, Fernando Jose Rigolin, Amaral, Flávia Lucisano Botelho, Miranda, Milton Edson, Turssi, Cecilia Pedroso
Format: Article
Language:English
Subjects:
Adhesion by mechanical interlocking
Analysis of variance
Canals
Cements
Dentine
Flares
Glass fiber reinforced plastics
Lining (process)
Relining
Resin composite cements
Roots
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Summary:The aim of this study was to investigate the push-out bond strength (PBS) of resin-relined and non-relined glass fiber posts (GFP) luted to flared root canals. Root canals of 80 bovine incisors were enlarged to obtain 40 mildly flared and 40 over-flared post spaces. Half of the specimens from each group had the GFP resin-relined, whilst the remainders were not relined. A further 20 root canals were minimally flared and restored with a non-relined GFP (control group). Posts were luted into the root canal space using dual-cure resin cement. Three slices were sectioned from each specimen: one from the coronal third and the others from the middle and apical thirds. PBS test was performed in a universal testing machine at a speed of 0.5mm/min. Two-way ANOVA for repeated measures and Tukey’s test showed that PBS was affected by the root canal flare and relining procedure (p
ISSN:0143-7496
1879-0127
DOI:10.1016/j.ijadhadh.2014.09.003