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

• Published in: Journal of endodontics Vol. 42; no. 11; pp. 1656 - 1659
• Main Authors: Silva, Emmanuel João Nogueira Leal, DDS, MSc, PhD, Carvalho, Nancy Kudsi, DDS, MSc, Prado, Marina C., DDS, MSc, Zanon, Mayara, DDS, Senna, Plinio Mendes, DDS, MSc, PhD, Souza, Erick M., DDS, MSc, PhD, De-Deus, Gustavo, DDS, MSc, PhD
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01-11-2016
• Subjects: Biocompatible Materials - chemistry; Bone Cements - chemistry; Calcium Compounds - chemistry; Dental Bonding; Dental Pulp Cavity; Dentin - chemistry; Dentistry; Endocrinology & Metabolism; Humans; MTA; pozzolan; push-out; Root Canal Filling Materials - chemistry; Root Canal Irrigants - chemistry; root canal obturation; Root Canal Obturation - methods; Root Canal Preparation - methods; root canal sealer; Silicates - chemistry; Zinc Oxide-Eugenol Cement - chemistry; pozzolan; push-out; root canal sealer; MTA; root canal obturation
• ISSN: 0099-2399; 1878-3554
• DOI: 10.1016/j.joen.2016.08.009

Abstract Introduction The present study aimed to rank the bond strength to root dentin of a new injectable pozzolan-based root canal sealer, EndoSeal MTA, as compared with MTA Fillapex and AH Plus. Methods Eighteen dentinal slices (1 ± 0.1 mm) were obtained from the middle third of 6 maxillary incisors previously selected. Three canal-like holes with 0.8 mm diameter were drilled perpendicularly on the axial surface of each slice. Then, a standardized irrigation was applied for all holes that were subsequently filled with 1 of 3 test root canal sealers. After that, slices were stored in contact with phosphate-buffered saline solution (pH 7.2) for 7 days at 37°C before the push-out assay. Friedman test and Wilcoxon signed rank test with a Bonferroni correction were used to rank the results. Significance boundary was set at α = 5%. Results Friedman test confirmed a significant dissimilarity in push-out ranks among the tested cements ( P  < .01). Wilcoxon signed rank test demonstrated AH Plus had significant superior resistance to dislodgment compared with Endo Seal ( P  < .01) or MTA Fillapex ( P  < .01), whereas MTA Fillapex presented the lowest push-out values as compared with Endo Seal ( P  < .01) or AH Plus ( P  < .01). Conclusions EndoSeal presents satisfactory bond strength performance for application in endodontic therapy compared with MTA Fillapex, and although it displays a new alternative of injectable bio-tight root canal sealer, it is not able to improve adhesion compared with AH Plus.