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Influence of proanthocyanidins combined with ethanol‐wet bonding on the bonding quality of fibre posts to root dentine
Author(s) -
Shen Lipei,
Xiong Jie,
Jiang Qingsong
Publication year - 2020
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/eos.12719
Subject(s) - adhesive , bond strength , dentistry , ethanol , collagenase , chemistry , dental bonding , scanning electron microscope , materials science , composite material , organic chemistry , enzyme , medicine , layer (electronics)
This study evaluated the influence of a bonding approach using proanthocyanidins (PAs) combined with ethanol‐wet bonding (EWB) and a hydrophobic adhesive on the bonding quality of fibre posts. After endodontic treatment and post‐space preparation, 72 single‐rooted extracted human teeth were etched, thoroughly rinsed, and then treated using the following procedures ( n = 24 teeth per group): group 1, no pretreatment; group 2, pretreatment with absolute ethanol three times, for 30 s each time; or group 3, pretreatment with absolute ethanol solution containing 5% PAs three times, for 30 s each time. Six teeth per group were dried according to a dry and a wet drying protocol and then observed using field emission‐scanning electron microscopy. The remaining 18 teeth in each group were cemented with fibre posts: All‐Bond 3 and Duo‐Link cement were used for group 1; and hydrophobic adhesive and Duo‐Link cement were used for groups 2 and 3. Push‐out bond strength, failure mode, and nanoleakage were evaluated immediately and after collagenase treatment. Higher push‐out bond strength and less nanoleakage were observed in the two ethanol‐pretreatment groups, regardless of storage conditions. Teeth pretreated with PAs + ethanol exhibited significantly higher push‐out bond strength after collagenase treatment than did teeth pretreated with ethanol alone. Within the limits of this study, the bonding approach of PAs combined with EWB and a hydrophobic adhesive synergistically improved the durability of fibre post bonds.