Accuracy of Linear Measurements of Ultra-Low Dose Cone Beam Computed Tomography and Digital Panoramic Radiography Performed on Mandibular Anaesthetic Landmarks Versus Real Mandibular Measurements: A Diagnostic Accuracy Study

Authors

  • Hala Wafik El Fayoumy
  • Hoda Abd El Kader Saleh
  • Mohamed Khalifa Zayet
  • Iman Dakhli

DOI:

https://doi.org/10.37506/ijphrd.v12i2.14107

Keywords:

Cone Beam Computed Tomography, Ultra-Low Dose, Reformatted Panoramic Images, Digital Panoramic Radiography

Abstract

Aim: This study was conducted to evaluate the accuracy of linear measurements performed on mandibular
anaesthetic landmarks obtained by ultra-low-dose cone beam computed tomography and digital panoramic
radiography in comparison with real measurement on dry mandible.
Method: A total number of nine dry human mandibles were selected and mandibular anaesthetic landmarks
were marked using gutta-percha. The dry mandibles were submitted for digital panoramic radiography and
cone beam computed tomography with mini-dose parameters using the SOREDEX CRANEX™ 3Dx unit,
linear measurements were performed on SCANORA Lite image viewer and on Demand 3D viewer. The real
linear measurements were measured using digital caliper.
Results: There was a statistically significant difference in all measurements performed on digital panoramic
radiographs,reformatted panoramic images underestimate real linear vertical measurements without
significant difference, the absolute error for the cross-sectional views of CBCT ranged from 0.0001 to
1.44mm for mandibular foramen linear measurements, using mini-dose parameters did not affect image
quality nor measurements accuracy.
Conclusions: Linear measurements driven from CBCT cross-sectional images using On Demand software
are accurate and have the lowest error value; therefore it is considered one of the most important imaging
modality for preoperative surgical site assessment.

Author Biographies

Hala Wafik El Fayoumy

Student

Hoda Abd El Kader Saleh

Professor

Mohamed Khalifa Zayet

Professor

Iman Dakhli

Associate Professor, Oral and Maxillofacial Radiology Department,
Faculty of Dentistry, Cairo University

Published

2021-03-01

How to Cite

Hala Wafik El Fayoumy, Hoda Abd El Kader Saleh, Mohamed Khalifa Zayet, & Iman Dakhli. (2021). Accuracy of Linear Measurements of Ultra-Low Dose Cone Beam Computed Tomography and Digital Panoramic Radiography Performed on Mandibular Anaesthetic Landmarks Versus Real Mandibular Measurements: A Diagnostic Accuracy Study. Indian Journal of Public Health Research & Development, 12(2), 139-146. https://doi.org/10.37506/ijphrd.v12i2.14107