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Influence of the used root canal sealer, cement and isopropyl alcohol irrigation on the bonding strength of glass fiber post and cores with root dentine

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Yasmin Bartosik, Anna Sójka-Makowska, Mariusz Pryliński, Wiesław Hędzelek



1/2021/XLIX s. 11–17
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DOI: https://doi.org/10.20883/df.2021.1

Fraza do cytowania: Bartosik Y., Sójka-Makowska A., Pryliński M., Hędzelek W. Influence of the used root canal sealer, cement and isopropyl alcohol irrigation on the bonding strength of glass fiber post and cores with root dentine. Dental Forum. 2021;XLIX(1):11–17. DOI: https://doi.org/10.20883/df.2021.1.

Introduction. Fibre-reinforced composite posts (FRC) are frequently used to increase retention of composite and prosthetic restorations. The most frequent failure occurring in the group of teeth rebuilt with the FRC posts is loss of retention. Hence, it is important to find those factors that may influence it. Aim of the study. The aim of the study was to compare the bonding strength of FRC posts luted with the use of conventional cement (RelyX Ultimate Clicker, 3M ESPE) and self-adhesive cement (RelyX U200, 3M ESPE) and to evaluate the effect of sealing pastes (Endomethasone N, AH Plus) on resinous cements. Also, the effectiveness of cleaning the root canal walls obstructed by Endomethasone N with 70% isopropyl alcohol was tested. Material and methods. Forty eight bovine mandibular incisors were collected from cows aged two years. A pull-out test was performed using a universal testing machine Hounsfield H5 KS, HTE S/N D 83281 (Tinius Olsen, UK). Results. The use of self-adhesive cements weakened the bonding by 20–37%. The pull out strengths needed to remove the posts from the root canals covered with eugenol-based paste were lower by 18.5–34%. Rinsing with 70% isopropyl alcohol allowed to reduce the negative effect of eugenol. Conclusions. It was concluded that both, the type of cement and root canal sealer have an impact on the luting strength of the post and core.

Key words: posts and cores, glass fiber posts, eugenol root canal sealers.





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