Emmanuel João Nogueira Leal Silva1, Nancy Kudsi Carvalho2, Marina C Prado2, Mayara Zanon3, Plinio Mendes Senna3, Erick M Souza4, Gustavo De-Deus3. 1. Department of Endodontics, School of Dentistry, Grande Rio University (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil. Electronic address: nogueiraemmanuel@hotmail.com. 2. Department of Endodontics, Rio de Janeiro State University (UERJ), Rio de Janeiro, Rio de Janeiro, Brazil. 3. Department of Endodontics, School of Dentistry, Grande Rio University (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil. 4. Department of Restorative Dentistry II, Federal University of Maranhão, São Luis, Maranhão, Brazil.
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.
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.
Authors: Bruno Piazza; Melissa Esther Rivera-Peña; Murilo Priori Alcalde; Bruno Carvalho de Vasconcelos; Marco Antonio Húngaro Duarte; Ivaldo Gomes de Moraes; Rodrigo Ricci Vivan Journal: Eur Endod J Date: 2017-12-22