title: Fluid movement along the coronal two-thirds of root fillings placed by three different gutta-percha techniques.
abstract: OBJECTIVE
  To compare fluid movement (FM) along the coronal two-thirds of gutta percha/sealer root fillings placed by three different techniques.
  
  
  METHODS
  Three groups consisting of the roots of mandibular incisors were instrumented and obturated by cold lateral compaction (LC), warm vertical compaction (VC) or the single-cone technique (SC), using RoekoSeal Automix (RSA) as the sealer. The apical 4 mm of each root filling was removed, and FM along the remaining 7 mm of the root filling was measured.
  
  
  RESULTS
  The VC group displayed more FM than the other two groups (P = 0.023). No significant difference in FM was found between the LC and SC groups (P = 0.629).
  
  
  CONCLUSIONS
  The coronal two-thirds of the VC root fillings did not prevent FM when RSA sealer was used.
authors.affiliation: Department of Cariology Endodontology Pedodontology, Academic Centre for Dentistry, Amsterdam (ACTA), Amsterdam, the Netherlands. m.wu@acta.nl
authors.forename: M-K
authors.initials: MK
authors.lastname: Wu
authors.forename: L W M
authors.initials: LW
authors.lastname: van der Sluis
authors.forename: C N
authors.initials: CN
authors.lastname: Ardila
authors.forename: P R
authors.initials: PR
authors.lastname: Wesselink
mesh_terms: D003738:Dental Cements; D003763:Dental Leakage / Q000517:prevention & control*; D006171:Gutta-Percha / Q000737:chemistry; D006801:Humans; D007180:Incisor; D012212:Rheology; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation / Q000379:methods*; D018709:Statistics, Nonparametric
chemical_list: D003738:Dental Cements; D012387:Root Canal Filling Materials; C465381:roeko seal; D006171:Gutta-Percha