Smartphone use for tomographic evaluation: application in endodontic diagnosis

 

Journal of Endodontics

Published:February 01, 2022DOI:https://doi.org/10.1016/j.joen.2022.01.017

Abstract

Introduction

Portable equipment that allows quick exchanges of information, such as smartphones, is increasingly important in Dentistry. Thus, they have become frequently used, with the potential to contribute to the tomographic evaluation. This study aimed to evaluate the accuracy of smartphone applications for diagnosing the root canal system (RCS) and measuring the root canal length.

Methods: DICOM files of 92 lower incisor teeth were evaluated by two trained and calibrated examiners using the CS 3D Imaging software and two smartphone applications (DroidRender and Horos Mobile). The RCS was assessed according to Vertucci's classification, and the tooth length was measured using linear cusp-apex measurements. The diagnostic reference standard was obtained by the mode and the mean of the evaluations made by three experienced examiners using the CS 3D Imaging software. The diagnostic performance of RCS was evaluated using sensitivity (Se), specificity (Sp), and overall accuracy (Ac). The Bland–Altman analysis was used to assess the agreement of linear measurements.

Results

The diagnostic tests showed similar performance between the smartphone applications (DroidRender: Se = 1.00; Sp = 0.95; Ac = 0.97; Horos: Se = 0.95; Sp = 0.94; Ac = 0.95) and the computer software (Se = 0.97 – 0.95; Sp = 0.93 – 0.96; Ac = 0.95 – 0.96). The smartphone applications showed discrepancies greater than 1.0 mm for the dental lengths, which may signal relevant differences in some clinical situations.

Conclusion

Smartphone applications offered similar diagnostic performance in comparison to the computer software for the RCS evaluation.