title: Bond strength of a calcium silicate-based sealer tested in bulk or with different main core materials.
abstract: The aim of this study was to evaluate the influence of a calcium silicate-based sealer (iRoot SP), with or without a core material, on bond strength to radicular dentin, in comparison with various contemporary root filling systems. Root canals of freshly extracted single-rooted teeth (n = 60) were instrumented using rotary instruments. The roots were randomly assigned to one of the following experimental groups: (1) a calcium silicate-based sealer without a core material (bulk-fill); (2) a calcium silicate-based sealer + gutta-percha; (3) a calcium silicate-based sealer + Resilon; (4) a methacrylate resin-based sealer (RealSeal SE) + Resilon; (5) an epoxy resin-based sealer (AH Plus) + gutta-percha, and (6) a mineral trioxide aggregate-based endodontic sealer (MTA Fillapex) + gutta-percha. Four 1-mm-thick sections were obtained from the coronal aspect of each root (n = 40 slices/group). Push-out bond strength testing was performed at a cross-head speed of 1 mm/min, and the bond strength data were analyzed statistically by one-way analysis of variance and Tukey tests (p < 0.05). The highest and lowest debonding values were obtained for the calcium silicate-based sealer bulk-fill and mineral trioxide aggregate-based endodontic sealer + gutta-percha groups, respectively (p < 0.05). It was concluded that the calcium silicate-based sealer showed higher resistance to dislocation in the bulk-filled form than in conjunction with the tested core filling materials. When the calcium silicate-based sealer was placed in bulk, its dislocation resistance was similar to that of commonly used sealer + core root filling systems. Thus, the concept of using a calcium silicate-based sealer in bulk can be more easily advocated in clinical practice.
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
authors.forename: Emre
authors.initials: E
authors.lastname: Nagas
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
authors.forename: Zafer
authors.initials: Z
authors.lastname: Cehreli
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
authors.forename: Mehmet Ozgur
authors.initials: MO
authors.lastname: Uyanik
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
authors.forename: Veli
authors.initials: V
authors.lastname: Durmaz
mesh_terms: D000293:Adolescent; D000328:Adult; D017607:Aluminum Compounds / Q000737:chemistry; D000704:Analysis of Variance; D017610:Calcium Compounds / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods*; D003786:Dental Pulp Cavity / Q000187:drug effects; D019232:Dental Restoration Failure; D003804:Dentin / Q000187:drug effects*; D004338:Drug Combinations; D006171:Gutta-Percha / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008875:Middle Aged; D010087:Oxides / Q000737:chemistry; D011897:Random Allocation; D015203:Reproducibility of Results; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012389:Root Canal Obturation / Q000379:methods; D017640:Silicates / Q000737:chemistry*; D055815:Young Adult
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D003188:Composite Resins; D004338:Drug Combinations; D008689:Methacrylates; D010087:Oxides; C511498:Real Seal composite resin; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; C486892:resilon sealer; D006171:Gutta-Percha; C031293:calcium silicate