title: Physicochemical properties and interfacial adaptation of root canal sealers.
abstract: This study compared the physicochemical properties and interfacial adaptation to canal walls of Endo-CPM-Sealer, Sealapex and Activ GP with the well-established AH Plus sealer. The following analyses were performed: radiopacity, pH variation and solubility using samples of each material and scanning electron microscopy of root-filled bovine incisors to evaluate the interfacial adaptation. Data were analyzed by the parametric and no-parametric tests (α=0.05). All materials were in accordance with the ANSI/ADA requirements for radiopacity. Endo-CPM-Sealer presented the lowest radiopacity values and AH Plus was the most radiopaque sealer (p=0.0001). Except for ActiV GP, which was acidic, all other sealers had basic chemical nature and released hydroxyl ions. Regarding solubility, all materials met the ANSI/ADA recommendations, with no statistically significant difference between the sealers (p=0.0834). AH Plus presented the best adaptation to canal walls in the middle (p=0.0023) and apical (p=0.0012) thirds, while the sealers Activ GP and Endo-CPM-Sealer had poor adaptation to the canal walls. All sealers, except for ActiV GP, were alkaline and all of them fulfilled the ANSI/ADA requirements for radiopacity and solubility. Regarding the interfacial adaptation, AH Plus was superior to the others considering the adaptation to the bovine root canal walls.
authors.affiliation: Department of Endodontics, School of Dentistry, University of Barcelona, Barcelona, Spain, Spain.
authors.forename: Piedad S
authors.initials: PS
authors.lastname: Cañadas
authors.affiliation: Department of Endodontics, School of Dentistry, University of Barcelona, Barcelona, Spain, Spain.
authors.forename: Ester
authors.initials: E
authors.lastname: Berástegui
authors.affiliation: Department of Integrated Pediatric Dentistry, School of Dentistry, University of Barcelona, Barcelona, Spain.
authors.forename: Patrícia
authors.initials: P
authors.lastname: Gaton-Hernández
authors.affiliation: Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Léa A B
authors.initials: LA
authors.lastname: Silva
authors.affiliation: Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Giselle A
authors.initials: GA
authors.lastname: Leite
authors.affiliation: Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Roberto S
authors.initials: RS
authors.lastname: Silva
mesh_terms: D000143:Acids / Q000737:chemistry; D000180:Acrylic Resins / Q000737:chemistry; D000468:Alkalies / Q000737:chemistry; D000818:Animals; D002126:Calcium Hydroxide / Q000737:chemistry; D002417:Cattle; D055598:Chemical Phenomena; D003287:Contrast Media / Q000737:chemistry; D001840:Dental Bonding / Q000379:methods; D018772:Dental Marginal Adaptation; D003786:Dental Pulp Cavity / Q000648:ultrastructure*; D004853:Epoxy Resins / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D006878:Hydroxides / Q000737:chemistry; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012459:Salicylates / Q000737:chemistry; D012995:Solubility; D013499:Surface Properties
chemical_list: D000143:Acids; D000180:Acrylic Resins; D000468:Alkalies; D003287:Contrast Media; C540763:Endo-CPM-Sealer; D004853:Epoxy Resins; D006878:Hydroxides; D012387:Root Canal Filling Materials; D012459:Salicylates; C528807:activ GP sealer; C534916:epoxy resin-based root canal sealer; C055601:Sealapex; C031356:hydroxide ion; D002126:Calcium Hydroxide