title: Push-out bond strength of gutta-percha with a new bioceramic sealer in the presence or absence of smear layer.
abstract: The purpose of this study was to compare the bond strength of a new bioceramic sealer (EndoSequence BC Sealer) and AH Plus in the presence or absence of smear layer. Extracted single-rooted human teeth were prepared and randomly divided into four groups. In groups 1 and 3, the root canals were finally irrigated with 5.25% NaOCl and smear layer was not removed, but in groups 2 and 4, the root canals were finally irrigated with 17% EDTA followed by 5.25% NaOCl in order to remove the smear layer. In groups 1 and 2, the root canals were obturated with gutta-percha/AH Plus, but in groups 3 and 4, obturation was performed with gutta-percha/EndoSequence BC Sealer. Push-out bond strength and failure modes were evaluated. The bond strength of gutta-percha/AH Plus and gutta-percha/EndoSequence BC Sealer was not significantly different (P = 0.89). The presence or absence of smear layer did not significantly affect the bond strength of filling materials (P = 0.69). The mode of bond failure was mainly cohesive for all groups. In conclusion, the bond strength of the new bioceramic sealer was equal to that of AH Plus with or without the smear layer.
authors.affiliation: Dental Research Center/Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran Iranian Center for Endodontic Research, Tehran, Iran Oral and Dental Diseases Research Center, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran Post-Doctoral Endodontic Program, Harvard School of Dental Medicine, Boston, Massachusetts, USA Clinical Instructor, Boston, Massachusetts, USA Private Practice, Shiraz, Iran School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Noushin
authors.initials: N
authors.lastname: Shokouhinejad
authors.forename: Hedayat
authors.initials: H
authors.lastname: Gorjestani
authors.forename: Allen Ali
authors.initials: AA
authors.lastname: Nasseh
authors.forename: Atefeh
authors.initials: A
authors.lastname: Hoseini
authors.forename: Maryam
authors.initials: M
authors.lastname: Mohammadi
authors.forename: Ahmad Reza
authors.initials: AR
authors.lastname: Shamshiri
mesh_terms: D002130:Calcium Phosphates / Q000737:chemistry*; D001840:Dental Bonding; D003786:Dental Pulp Cavity / Q000187:drug effects / Q000648:ultrastructure; D003804:Dentin / Q000187:drug effects / Q000648:ultrastructure; D004338:Drug Combinations; D004492:Edetic Acid / Q000627:therapeutic use; D004853:Epoxy Resins / Q000737:chemistry; D006171:Gutta-Percha / Q000737:chemistry*; D006801:Humans; D008855:Microscopy, Electron, Scanning; D010087:Oxides / Q000737:chemistry*; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012388:Root Canal Irrigants / Q000627:therapeutic use; D018915:Root Canal Preparation / Q000295:instrumentation / Q000379:methods; D017640:Silicates / Q000737:chemistry*; D016369:Smear Layer / Q000473:pathology*; D012973:Sodium Hypochlorite / Q000627:therapeutic use; D013314:Stress, Mechanical; D013499:Surface Properties
chemical_list: D002130:Calcium Phosphates; D004338:Drug Combinations; C550603:EndoSequence root repair material; D004853:Epoxy Resins; D010087:Oxides; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; D017640:Silicates; C534916:epoxy resin-based root canal sealer; D006171:Gutta-Percha; D004492:Edetic Acid; D012973:Sodium Hypochlorite
keywords: bioceramic; bond strength; root canal sealer; smear layer