title: Apical sealing of root canal fillings performed with five different endodontic sealers: analysis by fluid filtration.
abstract: OBJECTIVE
  To evaluate the sealing ability of five root canal sealers, including two experimental cements (MBP and MTA-Obtura) using the fluid filtration method.
  
  
  METHODS
  Teeth were divided into 5 study groups: G1-AH Plus; G2-Acroseal; G3Sealapex; G4-MBP; G5-MTA-Obtura; and two controls. Chemical-mechanical preparation was performed with ProFile rotary nickel-titanium instruments 1 mm short of the apical foramen. The sealing ability was evaluated by fluid filtration at 15, 30, and 60 days.
  
  
  RESULTS
  The statistical analysis showed significant difference between the materials at different periods (p<0.05). AH Plus and MBP had similar leakage values at 15 and 60 days, alternating with significant reduction at 30 days, while the other materials showed progressive increase in leakage values. Acroseal and Sealapex presented the best results at 15 days and the worst at 60 days.
  
  
  CONCLUSIONS
  All sealers evaluated presented fluid leakage, with AH Plus and MBP showing the best results at the end of the experimental period. Acroseal, Sealapex, and MTA-Obtura presented increase in leakage values at longer observation periods.
authors.affiliation: Sobral School of Dentistry, Federal University of Ceará, Sobral, CE, Brazil. bcv@ufc.br
authors.forename: Bruno Carvalho de
authors.initials: BC
authors.lastname: Vasconcelos
authors.forename: Ricardo Affonso
authors.initials: RA
authors.lastname: Bernardes
authors.forename: Marco Antonio Húngaro
authors.initials: MA
authors.lastname: Duarte
authors.forename: Clóvis Monteiro
authors.initials: CM
authors.lastname: Bramante
authors.forename: Ivaldo Gomes de
authors.initials: IG
authors.lastname: Moraes
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry; D017610:Calcium Compounds / Q000737:chemistry; D002126:Calcium Hydroxide / Q000737:chemistry; D003763:Dental Leakage; D004338:Drug Combinations; D006171:Gutta-Percha / Q000737:chemistry; D006801:Humans; D066298:In Vitro Techniques; D008422:Materials Testing; D010087:Oxides / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012389:Root Canal Obturation / Q000379:methods*; D012459:Salicylates / Q000737:chemistry; D017640:Silicates / Q000737:chemistry; D018709:Statistics, Nonparametric; D013997:Time Factors
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; D019279:Resin Cements; D012387:Root Canal Filling Materials; D012459:Salicylates; D017640:Silicates; C086631:mineral trioxide aggregate; C055601:Sealapex; D006171:Gutta-Percha; D002126:Calcium Hydroxide