Introduction: Optical Coherence Tomography (OCT), is one of the most emerging diagnostic imaging technique.

It is capable of producing 3D images using optical scattering media. The fast signal acquisition quality has made it

a promising tool to detect early in vivo and in vitro lesions. The aim of this study was to reproduce previous

demineralization results and to detect remineralization using OCT.

Methodology: Bovine enamel discs were used thoroughly in this study. The study was done using the flow cell

for detecting demineralization and remineralization following 96 hours demineralization and 192 hours

remineralization. A time lapse monitoring was done and the lesions were assessed visually. ImageJ software was

used to process the images produced through OCT. The lesion depth and intensity was measured across the

images produced which helped in assessing the difference between remineralization and demineralization.

Results: OCT B-scan images result in increased backscattering light which is considered the main principle to

measure lesion depth and mineral loss. Whereas, in remineralization decreased band of light appeared with

reduction in porosity during mineral precipitation. The results for remineralization were diverse and could not be

assessed.

Conclusion: OCT is favorable technique to detect demineralization and remineralization but it still needs a lot of

improvement especially regarding remineralization there are limitations which need to be improved.