Types of surface defects and incidence of fracture after root canal preparation using different single file systems at different torque settings using SEM (In vitro study)
Abdelzaher, N., Nagy, M., saber, S. (2024). Types of surface defects and incidence of fracture after root canal preparation using different single file systems at different torque settings using SEM (In vitro study). EKB Journal Management System, 70(2), 2011-2017. doi: 10.21608/edj.2024.261189.2872
Nesreen A Abdelzaher; Mohamed Mokhtar Nagy; shehab saber. "Types of surface defects and incidence of fracture after root canal preparation using different single file systems at different torque settings using SEM (In vitro study)". EKB Journal Management System, 70, 2, 2024, 2011-2017. doi: 10.21608/edj.2024.261189.2872
Abdelzaher, N., Nagy, M., saber, S. (2024). 'Types of surface defects and incidence of fracture after root canal preparation using different single file systems at different torque settings using SEM (In vitro study)', EKB Journal Management System, 70(2), pp. 2011-2017. doi: 10.21608/edj.2024.261189.2872
Abdelzaher, N., Nagy, M., saber, S. Types of surface defects and incidence of fracture after root canal preparation using different single file systems at different torque settings using SEM (In vitro study). EKB Journal Management System, 2024; 70(2): 2011-2017. doi: 10.21608/edj.2024.261189.2872

Types of surface defects and incidence of fracture after root canal preparation using different single file systems at different torque settings using SEM (In vitro study)

Egyptian Dental Journal
Volume 70, Issue 2 - Serial Number 5, April 2024, Page 2011-2017  XML PDF (526.14 K)
Document Type: Original Article
DOI: 10.21608/edj.2024.261189.2872
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Authors
Nesreen A Abdelzaher email orcid 1; Mohamed Mokhtar Nagyorcid 2; shehab saberorcid 3
1Assistant lecturer, Department of Endodontics, Faculty of Dentistry, Modern University for Technology and Information.
2Professor, Department of Endodontics. Faculty of Dentistry. Ain Shams University. Cairo. Egypt
3Professor, Department of Endodontics, Faculty of Dentistry, The British University in Egypt (BUE), Egypt.
Abstract
This study is an attempt to evaluate surface changes and incidence of fracture of different single file systems (One shape and Neoniti) after root canal preparations of lower permenant molars, under different torques, using SEM.
Material and methods: - Total 26 files were used, 2 Control (one from each system),Group I (12 oneshape file) and Group II (12 Neolix files), each was further divided into Sub group A(low Torque) and Sub group B (High Torque)respectively. Results showed that even the new files suffered from surface defects.. No used instruments free of surface defects even under high or low torque. Different torques cause statistical significant difference between One shape and Neolix files in terms of disrubtion of cutting edge and metal flash only.
Conclusion Clinicians should be aware because all files are predisposed to wear and fatigue, so small files should have improved quality control by the manufacturer as they are highly prone to failure especially in curved canals or under high torque or single use.
Keywords
Torque; oneshape; neolix; SEM
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