title: Physical properties of MTA Fillapex sealer.
abstract: BACKGROUND
  The aim of this study was to evaluate and compare several physicochemical properties including working and setting times, flow, solubility, and water absorption of a recent calcium silicate-based sealer (MTA Fillapex; Angelus, Londrina, Brazil) and an epoxy resin-based sealer (AH Plus; Dentsply, Konstanz, Germany).
  
  
  METHODS
  The materials were handled following the manufacturer's instructions. The working time and flow were tested according to ISO 6876:2001 and the setting time according to American Society for Testing and Materials C266. For solubility and water absorption tests, the materials were placed into polyvinyl chloride molds (8 × 1.6 mm). The samples (n = 10 for each material and test) were placed in a cylindrical polystyrene-sealed container with 20 mL deionized water at 37°C. At 1, 7, 14, and 28 days, the samples were removed from the solutions and blotted dry for solubility and water absorption tests. The data were analyzed using 1-way analysis of variance with the Tukey test (P < .05).
  
  
  RESULTS
  MTA Fillapex showed the lowest values of flow, working and setting times, solubility, and water absorption (P < .05). The solubility and water absorption increased significantly over time for both materials in a 1- to 28-day period (P < .05).
  
  
  CONCLUSIONS
  MTA Fillapex showed suitable physical properties to be used as an endodontic sealer.
authors.affiliation: Department of Restorative Dentistry, Dental Materials Division, University of Campinas, Piracicaba, Brazil. rafapvitti@gmail.com
authors.forename: Rafael Pino
authors.initials: RP
authors.lastname: Vitti
authors.forename: Carlo
authors.initials: C
authors.lastname: Prati
authors.forename: Emmanuel João Nogueira Leal
authors.initials: EJ
authors.lastname: Silva
authors.forename: Mário Alexandre Coelho
authors.initials: MA
authors.lastname: Sinhoreti
authors.forename: Cesar Henrique
authors.initials: CH
authors.lastname: Zanchi
authors.forename: Manuela Gonçalves
authors.initials: MG
authors.lastname: de Souza e Silva
authors.forename: Fabrício Aulo
authors.initials: FA
authors.lastname: Ogliari
authors.forename: Evandro
authors.initials: E
authors.lastname: Piva
authors.forename: Maria Giovanna
authors.initials: MG
authors.lastname: Gandolfi
mesh_terms: D000042:Absorption; D017607:Aluminum Compounds / Q000737:chemistry*; D017610:Calcium Compounds / Q000737:chemistry*; D055598:Chemical Phenomena; D004338:Drug Combinations; D004853:Epoxy Resins / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D010087:Oxides / Q000737:chemistry*; D012212:Rheology; D012387:Root Canal Filling Materials / Q000737:chemistry*; D017640:Silicates / Q000737:chemistry*; D012995:Solubility; D013696:Temperature; D013997:Time Factors; D014783:Viscosity; D014867:Water / Q000737:chemistry
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D004853:Epoxy Resins; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C534916:epoxy resin-based root canal sealer; C086631:mineral trioxide aggregate; D014867:Water