Fracture Resistance Of Endodontically Treated Mesial Roots Of Mandibular Molars With Different Obturation Techniques

Document Type : Original Article

Authors

1 Assistant Professor- Department of Restorative Dental Sciences- Endodontic Division- Faculty of Oral and Dental Medicine- Ahram Canadian University

2 Assistant Professor, Faculty of oral and dental medicine, Ahram Canadian University

Abstract

The aim of the present study was to comparatively evaluate the fracture resistance of endodontically treated mesial root of mandibular molars obturated with three different obturating techniques.
Methodology: Twenty-four mesial roots of mandibular molar teeth were selected and standardized at length 14±1 mm from the apex. Root canals were instrumented using ProTaper Next rotary system then divided into three groups (n=8) according to obturation technique used. Group L [control group]: Canals were obturated using cold lateral condensation technique and Well-Root ST bioceramic sealer. Group C: canals obturated using continuous wave compaction technique and Well-Root ST bioceramic sealer and finally Group V: canals obturated using Vibration thermos- hydrodynamic obturation technique with Well-Root ST bioceramic sealer. Mesial roots were embedded in cylindrical acrylic resin blocks then fracture resistance of samples were measured using universal testing machine.
Results: Data collected were analyzed using One-Way ANOVA test followed by Tukey`s Post Hoc test for multiple comparisons. Group V showed the highest resistance to fracture followed by Group C and Group L had the least fracture resistance values (583.91 ± 138.46 N, 571.81 ± 161.63 and 482.2 ± 147.5N respectively).
Conclusion: Obturation using single cone with ultrasonic activation of bioceramic sealer improves the fracture resistance of endodontically treated thin roots.

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Egyptian Dental Journal
Volume 71, Issue 2 - Serial Number 5
January (Conservative Dentistry and Endodontics)
April 2025
Pages 1826-1836

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