AI Article Synopsis
- The study explored using the attenuation coefficient from optical coherence tomography (OCT) signals to assess surface roughness in eroded dentine.
- The experiment involved treating human premolar root samples with citric acid and found that the relative attenuation coefficient increased with longer acid exposure.
- A strong correlation was observed between the attenuation coefficient and roughness measurements from electron microscopy, suggesting that this method could be a promising way to gauge surface changes in early erosion stages, although more research is needed for broader applications.
Article Abstract
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<0.01, r=0.9195). We conclude that the OCT attenuation coefficient of the immediate subsurface in eroded dentine is a potential surrogate measure for its surface roughness. However, further work should be performed to study how it relates to the surface and immediate subsurface changes effected by other mechanical wear before it could unequivocally be used as a surrogate measurement for surface roughness.
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| http://dx.doi.org/10.1364/AO.57.008673 | DOI Listing |
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