Assessing surface characteristics of eroded dentine with optical coherence tomography: a preliminary in vitro validation study

We conducted the first pilot study to investigate the use of the attenuation coefficient from an optical coherence tomography (OCT) backscattered signal as a measure of surface roughness changes in eroded dentine at an early stage of the erosion process. Ten human premolar root samples were subjecte...

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Bibliographic Details
Published in:Applied optics (2004) 2018-10, Vol.57 (29), p.8673
Main Authors: Habib, Madiha, Lee, Kuan Ming, Liew, Yih Miin, Zakian, Christian, Ung, Ngie Min, Chew, Hooi Pin
Format: Article
Language:English
Subjects:
Attenuation coefficients
Backscattering
Citric acid
Erosion
Optical Coherence Tomography
Scanning electron microscopy
Surface properties
Surface roughness
Tomography
Wear
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Summary:We conducted the first pilot study to investigate the use of the attenuation coefficient from an optical coherence tomography (OCT) backscattered signal as a measure of surface roughness changes in eroded dentine at an early stage of the erosion process. Ten human premolar root samples were subjected to citric acid treatment before scanning by OCT. The extracted relative attenuation coefficient (μ ) from backscattered OCT signals was shown to increase with the duration of acid challenge. Validated against roughness measurements (rS ) from scanning electron microscopy scans, μ is significantly correlated with rS indicative of severity of erosion (p
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.57.008673