title: Physical properties and interfacial adaptation of three epoxy resin-based sealers.
abstract: BACKGROUND
  The aim of the study was to evaluate the radiopacity, solubility, flow, film thickness, setting time, and adaptation to the root canal walls of 3 epoxy resin-based sealers: AH Plus, Acroseal, and Adseal.
  
  
  METHODS
  Physical tests were performed following American National Standards Institute/American Dental Association's requirements. For interfacial adaptation analysis, 30 maxillary canines were shaped by using ProTaper instruments. The specimens were divided into 3 groups (n = 10): group 1, AH Plus; group 2, Acroseal; and group 3, Adseal. The sealers were mixed with rhodamine B dye, and the canals were filled by using the lateral compaction technique. The percentage of gaps and voids area was calculated at 2, 4, and 6 mm levels from the apex. Statistical evaluation was performed by using analysis of variance for physical analysis and nonparametric Kruskal-Wallis and Dunn tests for interfacial adaptation (P < .05).
  
  
  RESULTS
  No statistical differences were found for adaptation, percentage of voids, solubility, flow, and film thickness among the sealers (P > .05). AH Plus was significantly more radiopaque (P < .05). For the setting time, there were statistical differences among all the studied sealers (P < .05).
  
  
  CONCLUSIONS
  AH Plus, Acroseal, and Adseal presented similar root canal adaptation, solubility, flow, and film thickness. Statistical differences were found for radiopacity and setting time (P < .05).
authors.affiliation: Department of Operative Dentistry, Dental Materials and Endodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil. marinangelica@usp.br
authors.forename: Marina A
authors.initials: MA
authors.lastname: Marciano
authors.forename: Bruno M
authors.initials: BM
authors.lastname: Guimarães
authors.forename: Ronald
authors.initials: R
authors.lastname: Ordinola-Zapata
authors.forename: Clovis M
authors.initials: CM
authors.lastname: Bramante
authors.forename: Bruno C
authors.initials: BC
authors.lastname: Cavenago
authors.forename: Roberto B
authors.initials: RB
authors.lastname: Garcia
authors.forename: Norberti
authors.initials: N
authors.lastname: Bernardineli
authors.forename: Flaviana B
authors.initials: FB
authors.lastname: Andrade
authors.forename: Ivaldo G
authors.initials: IG
authors.lastname: Moraes
authors.forename: Marco A H
authors.initials: MA
authors.lastname: Duarte
mesh_terms: D000704:Analysis of Variance; D060326:Chemistry Techniques, Synthetic; D003287:Contrast Media; D003481:Cuspid; D018772:Dental Marginal Adaptation; D004853:Epoxy Resins / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D018613:Microscopy, Confocal; D012212:Rheology; D012387:Root Canal Filling Materials / Q000737:chemistry; D012995:Solubility; D018709:Statistics, Nonparametric; D014783:Viscosity
chemical_list: C477053:Acroseal; D003287:Contrast Media; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; C534916:epoxy resin-based root canal sealer