Evaluation of the bond strengths of 3 endodontic cements via push-out test
Ferreira, N.d.S.; Jeronymo Ferreira, R.D.I.; da Rosa, P.C.F.; Gomes, A.P.M.; Camargo, C.H.R.; Carvalho, C.A.T.; Valera, M.C.
General Dentistry 63(3): E1-E3
2015
ISSN/ISBN: 0363-6771 PMID: 25945771 Document Number: 685050
In this study, the push-out method was used to evaluate the bond strengths of 3 types of endodontic cements according to their composite base: methacrylate, epoxy resin, and an experimental copaiba oil resin. The study hypothesis was that the methacrylate-based and experimental cements would have bond strengths equal to or greater than that of the epoxy resin-based cement. Thirty bovine tooth roots, 18 mm long, were divided into 3 groups (n = 10) based on the chosen cement treatment. After treatment, the specimens were sectioned and submitted to a push-out test. Results showed that there was no statistically significant difference (P < 0.05) between the cements used or between the middle and apical thirds of the roots. It could be concluded that the tested cements had satisfactory and similar bond strengths to dentin.