title: Bond strength of calcium silicate-based sealers to dentine dried with different techniques.
abstract: OBJECTIVE
  To assess the influence of various canal-drying techniques on the push-out bond strength between radicular dentine and both MTA Fillapex and iRoot SP sealers.
  
  
  METHODS
  Eighty extracted single-root teeth were instrumented with ProTaper Universal rotary instruments to a size F4. The teeth were randomly assigned to 1 of 4 groups as follows: group 1, excess fluid in the canals was removed using a Luer vacuum adapter; group 2, the canals were dried with a single paper point; group 3, the canals were dried with 3-5 paper points, and group 4, the canals were rinsed with 95% ethanol and then dried with 3-5 paper points. In each group, the specimens were subgrouped according to root canal sealer into either subgroup A (MTA Fillapex) or subgroup B (iRoot SP sealer). Horizontal sections (thickness 1 ± 0.1 mm) were obtained from each specimen and a push-out test was performed using a universal testing machine at a crosshead speed of 1 mm/min on root slices. Statistical analysis was done using the Kruskal-Wallis test and Dunn's test for pair-wise comparisons. p < 0.05 was considered statistically significant.
  
  
  RESULTS
  Canals dried with only 1 paper point and obturated with the iRoot SP sealer (subgroup 2B) showed significantly higher bond strengths to the root canal wall compared to all other subgroups (p < 0.05), except for subgroup 1B (p > 0.05).
  
  
  CONCLUSIONS
  The canal-drying technique influenced the adhesive bond strength between calcium silicate-based root canal sealers and the root canal wall.
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey.
authors.forename: Tamer
authors.initials: T
authors.lastname: Taşdemir
authors.forename: Kürşat
authors.initials: K
authors.lastname: Er
authors.forename: Davut
authors.initials: D
authors.lastname: Çelik
authors.forename: Erhan
authors.initials: E
authors.lastname: Tahan
authors.forename: Ahmet
authors.initials: A
authors.lastname: Serper
authors.forename: Kadir Tolga
authors.initials: KT
authors.lastname: Ceyhanli
authors.forename: Cemal
authors.initials: C
authors.lastname: Yeşilyurt
mesh_terms: D003804:Dentin; D006171:Gutta-Percha / Q000737:chemistry; D006801:Humans; D011897:Random Allocation; D012387:Root Canal Filling Materials / Q000737:chemistry*; D018915:Root Canal Preparation / Q000379:methods*; D014867:Water / Q000737:chemistry*
chemical_list: D012387:Root Canal Filling Materials; D014867:Water; D006171:Gutta-Percha