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Evaluation of the influence of time and concentration of sodium hypochlorite on the bond strength of glass fibre post
Author(s) -
Knight Beau,
Love Robert M.,
George Roy
Publication year - 2018
Publication title -
australian endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.703
H-Index - 34
eISSN - 1747-4477
pISSN - 1329-1947
DOI - 10.1111/aej.12239
Subject(s) - sodium hypochlorite , bond strength , distilled water , root canal , materials science , irrigation , dentistry , hypochlorite , chemistry , composite material , adhesive , medicine , layer (electronics) , agronomy , chromatography , organic chemistry , biology
This study evaluated the effect of time and concentrations of sodium hypochlorite on the bond strength of a glass fibre post cemented in a root canal with resin cement. A total of 45 single‐rooted extracted human teeth were prepared with Protaper ® universal files, randomly allocated into nine groups and then subjected to 1% or 4% Na OC l for a period of 1 min or 2 min. Fibre posts were then bonded into the root canal, sectioned and the bond strength tested using a push‐out test. A longer irrigation time resulted in a significant reduction ( P < 0.05) in bond strength, while a final additional irrigation with distilled water significantly reduced bond strength. The concentration of Na OC l did not significantly affect bond strength. Within the limitations of this study, it was observed that regardless of the concentration of Na OC l used, shorter irrigation times favoured better fibre post bonding.