title: A comparative evaluation of sealing ability of a new, self-etching, dual-curable sealer: hybrid root SEAL (MetaSEAL).
abstract: OBJECTIVE
  To assess the long-term sealing ability of a new dual-curable, self-etching, 4-META containing resin-based sealer: Hybrid Root SEAL (MetaSEAL in the United States) and compare with RealSeal and AH Plus sealers.
  
  
  METHODS
  Root canals of 44 extracted and decoronated single-rooted human teeth were instrumented using a crown-down technique with ProFile 0.04 tapered NiTi rotary instruments to ISO size 30 and then to size 45 with K-hand files. Four roots were selected and used as positive and negative controls (n = 2), the rest were randomly divided into 4 groups (n = 10) and filled using 0.04 tapered size 45 cones as follows: Group 1: AH Plus with gutta-percha; Group 2: Hybrid Root SEAL (MetaSEAL) with gutta-percha; Group 3: Hybrid Root SEAL (MetaSEAL) with Resilon point; and Group 4: RealSeal with Resilon point. The quality of seal of each specimen was measured after 1, 4, 12, and 24 weeks using a fluid transport model. Measurements were made at 2-minute intervals for 8 minutes. The data were calculated as Lp and statistically analyzed using 2-way repeated measures of ANOVA and Bonferroni pairwise comparison tests (alpha = 0.05).
  
  
  RESULTS
  There were no significant differences among test materials in terms of fluid microleakage values (P = .126). There were statistically significant differences among the time periods (P = .009) and observed between 1- and 24-week test periods. There was significant interaction between root canal filling materials and time of testing (P = .048).
  
  
  CONCLUSIONS
  Within the limitations of this in vitro study, it was concluded that recently introduced Hybrid Root SEAL (MetaSEAL) showed similar sealing performance with RealSeal and AH Plus sealers when used either with gutta-percha or Resilon at 24 weeks.
authors.affiliation: Faculty of Dentistry, Selcuk University, Konya, Turkey. sbelli@selcuk.edu.tr
authors.forename: Sema
authors.initials: S
authors.lastname: Belli
authors.forename: Erhan
authors.initials: E
authors.lastname: Ozcan
authors.forename: Oznur
authors.initials: O
authors.lastname: Derinbay
authors.forename: Ayce Unverdi
authors.initials: AU
authors.lastname: Eldeniz
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D003188:Composite Resins; D003763:Dental Leakage / Q000517:prevention & control*; D004853:Epoxy Resins; D006801:Humans; D008689:Methacrylates; D019279:Resin Cements; D012387:Root Canal Filling Materials; D055116:Self-Curing of Dental Resins; D013997:Time Factors
chemical_list: D003188:Composite Resins; D004853:Epoxy Resins; D008689:Methacrylates; C511498:Real Seal composite resin; D019279:Resin Cements; D012387:Root Canal Filling Materials; C534916:epoxy resin-based root canal sealer; C534239:metaseal