Do smear‐layer removal agents affect the push‐out bond strength of calcium silicate‐based endodontic sealers?

Abstract

The use of different chelating agents did not influence the push-out bond strength of endodontic sealers. Calcium silicate-based sealers had lower push-out bond strength values compared with a conventional epoxy resin-based sealer (AH Plus).

Push-out Bond Strength of Injectable Pozzolan-based Root Canal Sealer

“…Both MTAbased sealers, EndoSeal and MTA Fillapex, produced inferior dentinal bond strength values compared with AH Plus. The present result is in accordance with several previous studies in which AH Plus was also associated with significantly higher bond strength values when compared with other sealers (19)(20)(21)(22)(23). The superior bond strength property of AH Plus may be largely attributed to the capacity of Basic Research-Technology producing a covalent bond by mixing diepoxide compounds and polyamine paste during its manipulation so that each amine group in the collagen network reacts with an open epoxide ring, resulting in a heavily cross-linked polymer that is rigid and strong (24,25).…”

“…This is in agreement with previous research that also observed poor bond strength values for MTA Fillapex (16,22,23). This is a paste-to-paste sealer that, whenever mixed, establishes 2 important chemical reactions that are responsible for the material's setting and physical-mechanical characteristics, the progressive hydration of the orthosilicate ions and the reaction between MTA and salicylate resin (26).…”

Effect of root canal irrigation protocols on the dislocation resistance of mineral trioxide aggregate‐based materials: A systematic review of laboratory studies

“…Twenty-eight papers were included for review of the full text. Only three studies provided data on all the variables that were tabulated (El-Ma'aita et al 2013, Neelakantan et al 2015, Carvalho et al 2017. Twenty papers were excluded because they did not meet the inclusion criteria (Table 2).…”

“…Three studies evaluated NaOCl-EDTA-NaOCl as one of the experimental groups, with a final rinse of distilled water (El-Ma'aita et al 2013, Neelakantan et al 2015, Carvalho et al 2017. Only one of these groups had a control group (NaOCl; El-Ma'aita et al 2013) and reported that NaOCl-EDTA-NaOCl-water significantly reduced the bond strength compared to the control.…”

“…Two studies (Celik et al 2014, Carvalho et al 2017 reported no significant difference in the dislocation resistance values between the experimental groups, but one (Neelakantan et al 2015) reported that NaOCl + etidronic acid-water and QMix (chlorhexidine mixed with EDTA)-water had higher dislocation values, which improved over a storage time of 3 months. Two studies (Celik et al 2014, Carvalho et al 2017 reported no significant difference in the dislocation resistance values between the experimental groups, but one (Neelakantan et al 2015) reported that NaOCl + etidronic acid-water and QMix (chlorhexidine mixed with EDTA)-water had higher dislocation values, which improved over a storage time of 3 months.…”