title: Sealing efficiency of BeeFill 2in1 and System B/Obtura II versus single-cone and cold lateral compaction techniques.
abstract: OBJECTIVE
  The objective of this study was to investigate the sealing properties of 2 warm vertical compaction techniques (BeeFill 2in1, System B/Obtura II) in comparison with single-cone and cold laterally compacted gutta-percha.
  
  
  METHODS
  The root canals of single-rooted human teeth were prepared by using Mtwo rotary files and divided into 4 groups (n = 10/group) with respect to the filling technique tested: Group 1, cold laterally compacted gutta-percha + AH-26; Group 2, single-cone tapered Mtwo gutta-percha + AH-26; Group 3, System B/ObturaII + AH-26; Group 4, BeeFill 2in1 + 2seal. The leakage of specimens was measured using a fluid-filtration method after 1 and 2 weeks. The data were analyzed statistically with 2-way repeated measures ANOVA (P = .05).
  
  
  RESULTS
  After 1 week, the System B/Obtura II group showed the greatest amount of leakage(P < .05) compared with the other test groups that had similar levels of fluid conductance(P < .05). By the end of the second week, the BeeFill group yielded the greatest amount of leakage (P < .05). Compared with their 1-week values, the fluid conductance of all test groups decreased significantly (P < .05).
  
  
  CONCLUSIONS
  The apical sealing efficiency of System B/Obtura II and BeeFill were inferior to the other obturation techniques after 2-week fluid conductance testing in vitro.
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey. dtzeliha@gmail.com
authors.forename: Zeliha
authors.initials: Z
authors.lastname: Yilmaz
authors.forename: Derya
authors.initials: D
authors.lastname: Deniz
authors.forename: Bahar
authors.initials: B
authors.lastname: Ozcelik
authors.forename: Cem
authors.initials: C
authors.lastname: Sahin
authors.forename: Hale
authors.initials: H
authors.lastname: Cimilli
authors.forename: Zafer C
authors.initials: ZC
authors.lastname: Cehreli
authors.forename: Nevin
authors.initials: N
authors.lastname: Kartal
mesh_terms: D000704:Analysis of Variance; D003763:Dental Leakage / Q000517:prevention & control*; D018772:Dental Marginal Adaptation; D003786:Dental Pulp Cavity / Q000601:surgery; D006171:Gutta-Percha / Q000737:chemistry; D006801:Humans; D007180:Incisor; D008422:Materials Testing; D008437:Maxilla; D012387:Root Canal Filling Materials / Q000737:chemistry* / Q000145:classification; D012389:Root Canal Obturation / Q000379:methods*
chemical_list: D012387:Root Canal Filling Materials; D006171:Gutta-Percha