Sealing Ability of Different Root Canal Sealers and Obturation Techniques

Document Type : Original Article

Authors

1 Department of Endodontics, Faculty of Dentistry, Assiut University, Assiut, Egypt

2 Dental Materials department.Assiut University,Assiut City

Abstract

 Aim:  In this research, we assessed the sealing performance of various root canal 
sealers in conjunction with diverse obturation methods Subjects and methods: We 
selected ninety human mandibular premolars with single roots. The instrumentation 
was carried out for all specimens using ProTaper Next rotary files until reaching a 
size of 40/0.06. Irrigation was done by applying 5 mL of 5.25% NaOCl between each 
instrument, followed by a final rinse of 5 mL of 17% EDTA for 1 minute. Subsequently, 
we flushed the canals with a generous amount of sterile distilled water. We randomly 
selected samples and categorized them into three primary groups (n=30) based on the 
sealer employed. Each primary group was subdivided into three subgroups (n=10) 
depending on the obturation technique employed. In the groups using bioceramic 
sealers (Group B, C), the canals were intentionally left partially moist to aid in the 
setting process, thereby mimicking real-world clinical scenarios. To ensure the sealer 
fully set, the teeth were kept in an environment with 100% humidity at 37°C for a week. 
Afterward, the roots were transversely sectioned using a precision linear saw. The cut 
sections were then examined using a Scanning Electron Microscope. Results: Gap 
distance is significantly higher in the AH Plus sealer group and lower in the Vertical 
compaction technique. Conclusion: Bioceramic sealers showed better adaption to 
dentin and vertical compaction obturation technique showed the best adaptation.

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