Accuracy of Working Length Determination of Curved Canal Using Digital and Film-Based Radiography

Document Type : مقاله‌های پژوهشی

Authors

1 Assistant Professor, Department of radiology, Dental Implant Research Center ,Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

2 Associate Professor, Department of radiology, Dental Implant Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

3 Assistant Professor, Department of radiology, Dental Implant Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

4 Post Graduated Student, Pedodontics Department, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran

10.48305/v0i0.1880

Abstract

Introduction: Digital and film-based radiography are the most common methods of working length determination. The objective of this study was to compare the accuracy of working length determination of curved canals using digital and film-based radiography.
Materials and Methods: This experimental and interventional study, included forty teeth with curved canals conducted at the Dentistry Faculty of Isfahan University of Medical Sciences, in 2018. After access cavity preparation, the direct observation method of the apical tip of the file in the root apex determined the actual working length. Teeth were mounted in acrylic blocks. Canal curvature was calculated based on Schneider’s method using software of indirect digital radiography. Images gathered by E-speed film and digital sensors. A pre-curved file was used to measure the working length of film-based images. In digital radiography, a digital caliper was used to measure the working length with three and six clicks. Data were analyzed by repeated measure analysis, paired t-test, and Intraclass Correlation Coefficient. The Level of significance was set at 0.001.
Results: All groups overestimated the actual length although there weren’t any significant differences (p value > 0.05). Paired t-test didn’t show any significant differences between digital and film-based groups (p value > 0.05).
Conclusion: Considering several advantages of digital radiography over the film-based method, it is the preferred method for working length determination of curved canals.
Keywords: Root Canal Therapy, Dental Digital Radiography, Endodontics.

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Journal of Isfahan Dental School
Volume 17, Issue 3 - Serial Number 3
August 2021
Pages 283-291

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