Proximal Caries Detection Using Short-Wave Infrared Transillumination at Wavelengths of 1050, 1200 and 1300 nm in Permanent Posterior Human Teeth

This in vitro study aimed to investigate the diagnostic potential of short-wave infrared transillumination (SWIRT) at 1050, 1200 and 1300 nm for the detection of proximal caries in molars and premolars. It was compared to the diagnostic performance of bitewing radiography (BWR) and micro-computed to...

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Bibliographic Details
Published in:Diagnostics (Basel) 2023-10, Vol.13 (20), p.3257
Main Authors: Heck, Katrin, Kunzelmann, Karl-Heinz, Walter, Elias, Kaisarly, Dalia, Hoffmann, Lea, Litzenburger, Friederike
Format: Article
Language:English
Subjects:
Cameras
Comparative analysis
CT imaging
dental caries
Dental enamel
diagnostic imaging
Fluorides
Gallium arsenide
Light
Radiation
Radiography
Reproducibility
reproducibility of results
Sample size
sensitivity and specificity
Sensors
short-wave infrared transillumination
Teeth
Tomography
X-ray microtomography
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Summary:This in vitro study aimed to investigate the diagnostic potential of short-wave infrared transillumination (SWIRT) at 1050, 1200 and 1300 nm for the detection of proximal caries in molars and premolars. It was compared to the diagnostic performance of bitewing radiography (BWR) and micro-computed tomography (µCT) as the reference standard. 250 sound or decayed proximal surfaces of permanent posterior extracted teeth were examined using (1) SWIRT at 1050, 1200 and 1300 nm with two camera systems of different resolutions, (2) BWR and (3) µCT. Thresholds were defined for both test methods and the reference standard for caries in general, enamel caries and dentin caries. All images were assessed by two examiners twice, at an interval of two weeks. SWIRT at wavelengths of 1050, 1200 and 1300 nm achieved sensitivity values more than 2.5 times higher than BWR (enamel caries 3.2–4.4 times; dentin caries 3.25–4.25 times) for the detection of proximal caries. Sensitivity values of SWIRT improved with the higher wavelength. No significant difference was found in diagnostic quality between the two camera systems. SWIRT at 1300 nm imaged proximal enamel caries with the highest accuracy, while the physical optimum for transillumination in dentin was located at a lower wavelength (
ISSN:2075-4418
2075-4418
DOI:10.3390/diagnostics13203257