Bond Strength of Calcium Silicate-Based Sealers to Dentine Dried with Different Techniques

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TAŞDEMİR T., ER K., ÇELİK D., TAHAN E., SERPER A., Ceyhanli K. T., ...More

MEDICAL PRINCIPLES AND PRACTICE, vol.23, no.4, pp.373-376, 2014 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 23 Issue: 4
  • Publication Date: 2014
  • Doi Number: 10.1159/000362619
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.373-376
  • Keywords: Push-out bond strength, Calcium silicate sealers, Root canal drying, ROOT-CANAL SEALER, CYTOTOXICITY, ADHESION, IMPROVES, QUALITY
  • Hacettepe University Affiliated: Yes


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. Materials and 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. (C) 2014 S. Karger AG, Basel