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Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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Short-Wave Infrared Reflectance at 1050-1550 nm for Proximal Caries Detection: An In Vitro Diagnostic Accuracy Study

Friederike Litzenburger1, Karl-Heinz Kunzelmann1, Elias Walter1

  • 1Department of Conservative Dentistry, Periodontology and Digital Dentistry, LMU University Hospital, LMU Munich, 80336 Munich, Germany.

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Short-wave infrared reflectance (SWIRR) imaging shows promise for detecting proximal caries. The 1050 nm wavelength offers the best diagnostic accuracy and specificity, outperforming traditional radiography.

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computer-assisteddental enamelimage interpretationin vitro techniquesnon-ionising radiationsensitivity and specificity

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Area of Science:

  • Dental diagnostics
  • Medical imaging technology
  • Biophotonics

Background:

  • Proximal caries detection remains a challenge in dentistry.
  • Short-wave infrared reflectance (SWIRR) imaging is a non-ionizing method for caries detection.
  • The optimal wavelength for SWIRR in caries detection requires systematic evaluation.

Purpose of the Study:

  • To assess the diagnostic accuracy of SWIRR at various wavelengths for proximal caries detection.
  • To compare SWIRR performance against digital bitewing radiography (BWR).
  • To determine the impact of wavelength selection on SWIRR diagnostic performance.

Main Methods:

  • An in vitro diagnostic accuracy study involving 250 extracted teeth.
  • SWIRR imaging was performed at 1050, 1200, 1300, and 1550 nm.
  • Micro-computed tomography served as the reference standard; BWR was the clinical comparator.

Main Results:

  • SWIRR diagnostic performance varied significantly with wavelength.
  • The 1050 nm wavelength yielded the highest overall accuracy (80.0%), surpassing BWR (73.8%).
  • Higher wavelengths increased sensitivity but decreased specificity, with 1550 nm showing the most false positives.

Conclusions:

  • SWIRR imaging possesses substantial potential for detecting proximal caries.
  • The 1050 nm wavelength provides an optimal balance of accuracy and specificity for SWIRR-based caries detection.
  • Wavelength selection is crucial for maximizing the diagnostic utility of SWIRR.