title: Leakage of 4 resin-based root-canal sealers used with a single-cone technique.
abstract: OBJECTIVE
  The aim of this study was to measure leakage of 4 resin-based sealers.
  
  
  METHODS
  Four groups of premolars (n = 60) were prepared using GT Rotary files and the crown-down technique and filled by the single-cone technique with AH26, AHPlus, EndoREZ, and an experimental MBP as sealer. Leakage was measured using the fluid filtration method after 15, 30, and 60 days and determined as microL/min(-1) x 10 psi.
  
  
  RESULTS
  Statistical analysis by ANOVA and Tukey HSD test indicated that root fillings with AH Plus and the MBP showed lower leakage values after 15 days (P < .05). At 30 days, AH26 presented higher leakage values when compared to other sealers (P < .05). At 60 days, MBP and AH Plus presented the lower leakage values, differing significantly from EndoREZ (P < .05).
  
  
  CONCLUSIONS
  It was observed that AH Plus and the experimental MBP showed lower leakage after 60 days than AH 26 and EndoREZ.
authors.affiliation: Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil. ulix@terra.com.br
authors.forename: Ulisses Xavier
authors.initials: UX
authors.lastname: da Silva Neto
authors.forename: Ivaldo Gomes
authors.initials: IG
authors.lastname: de Moraes
authors.forename: Vânia Portela Ditzel
authors.initials: VP
authors.lastname: Westphalen
authors.forename: Renato
authors.initials: R
authors.lastname: Menezes
authors.forename: Everdan
authors.initials: E
authors.lastname: Carneiro
authors.forename: Luiz Fernando
authors.initials: LF
authors.lastname: Fariniuk
mesh_terms: D000704:Analysis of Variance; D001641:Bicuspid; D001729:Bismuth; D003188:Composite Resins; D003763:Dental Leakage / Q000517:prevention & control*; D004338:Drug Combinations; D004853:Epoxy Resins; D006801:Humans; D019279:Resin Cements; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation / Q000379:methods*; D012834:Silver; D018709:Statistics, Nonparametric; D014025:Titanium
chemical_list: D003188:Composite Resins; D004338:Drug Combinations; C481259:EndoRez; D004853:Epoxy Resins; D019279:Resin Cements; D012387:Root Canal Filling Materials; C534916:epoxy resin-based root canal sealer; D012834:Silver; C028044:epoxy resin AH-26; D014025:Titanium; D001729:Bismuth