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- Title
Removal of Smear Layer Improves Coronal Sealing Ability of an Experimental Nano Hydroxyapatite-Containing and AH26 Sealers.
- Authors
Alomari, Shadi Mohammad Ali; Ab-Ghani, Zuryati; Masudi, Sam'an Malik; Husein, Adam; Khursheed Alam, Mohammad
- Abstract
Objectives: The aim of this study was to determine whether the presence of smear layer influences the coronal leakage in root canals obturated with an alternative nano hydroxyapatite (HA) containing sealer. Materials and Methods: A total of one hundred and seventy two extracted anterior permanent human teeth were used. The root canals were instrumented using step-back technique. Four groups were created (n = 38): smear layer (present/ absent), and sealer used (nano HA sealer/AH26 sealer as a control). All teeth were obturated using lateral condensation technique with gutta-percha and tested for leakage using methylene blue dye. The other 20 teeth served as positive and negative controls. Results: Significantly more dye leakage was observed in the groups with retained smear layer, regardless of whether the nano HA or AH 26 sealers used (p values of 0.006 and 0.031 for the nano HA and AH26 sealers respectively). No significant difference in dye leakage between the two sealers when the smear layer was removed. Conclusion: Smear layer removal thus has a positive effect on coronal sealing, independent of the type of sealer. Coronal sealing ability of nano HA sealer was comparable to the commercial AH26 sealer.
- Subjects
CONFIDENCE intervals; DENTAL deposits; DENTAL materials; METHYLENE blue; RESEARCH funding; STATISTICS; T-test (Statistics); INTER-observer reliability; DESCRIPTIVE statistics; IN vitro studies
- Publication
International Medical Journal, 2014, Vol 21, Issue 1, p92
- ISSN
1341-2051
- Publication type
Article