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Updated: Jan 27, 2026

Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor
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Accuracy in Detecting Artificial Root Resorption in Panoramic Radiography versus Tomosynthetic Panoramic Radiographs.

Selina Rahmel1, Ralf K W Schulze1

  • 1Section of Oral Radiology, Department of Oral and Maxillofacial Surgery, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.

Journal of Endodontics
|March 26, 2019
PubMed
Summary
This summary is machine-generated.

Tomosynthetically reconstructed panoramic radiography (TPAN) offers slightly improved detection of artificial root resorption compared to conventional panoramic radiography (PAN). This advancement in dental imaging aids in more accurate diagnosis of external root resorption.

Keywords:
Detection accuracyexternal root resorptionpanoramic radiographyreceiver operating characteristics (ROC-) analysistomosynthesis

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Area of Science:

  • Dentistry
  • Radiology
  • Oral and Maxillofacial Radiology

Background:

  • External root resorption is a significant concern in dental diagnostics.
  • Accurate detection of external root resorption is crucial for treatment planning and prognosis.
  • Conventional digital panoramic radiography (PAN) has limitations in detecting subtle root abnormalities.

Purpose of the Study:

  • To compare the diagnostic accuracy of tomosynthetically reconstructed panoramic radiography (TPAN) versus conventional PAN for detecting artificial external root resorption.
  • To evaluate the performance of TPAN and PAN using a multi-observer approach.

Main Methods:

  • Artificial root resorption defects were created on 36 human teeth in dry mandibles.
  • Samples were imaged using both PAN and TPAN techniques under simulated clinical conditions.
  • 13 observers assessed the visibility of resorption using a 5-point confidence scale, with a subset repeating the assessment for reproducibility.
  • Receiver operating characteristic (ROC) analysis was performed to determine accuracy (Az).

Main Results:

  • TPAN demonstrated a statistically significant, albeit slight, improvement in detection accuracy (mean Az = 0.76) compared to PAN (mean Az = 0.75).
  • Detection accuracy was highest in the premolar region and lowest in the molar region for both imaging modalities.
  • Mean sensitivity for TPAN was 0.54 (specificity 0.96), and for PAN was 0.50 (specificity 0.96).
  • Both intra- and inter-rater reproducibility were found to be moderate for both PAN and TPAN.

Conclusions:

  • Tomosynthetically reconstructed panoramic radiography (TPAN) shows slightly enhanced accuracy for detecting artificial external root resorption compared to conventional digital panoramic radiography (PAN).
  • TPAN represents a promising advancement for the radiographic assessment of root resorption in clinical practice.