Figure 2
From: 3D imaging of proximal caries in posterior teeth using optical coherence tomography
Images of teeth with enamel demineralization (score 1). (a) Occlusal view of proximal contacts. Histological view of the area of interest stained by 5% acid red solution. Left: Enamel demineralization penetrating deep into the enamel (white arrow, score 1). Right: Enamel demineralization localized at the superficial enamel (blue arrow, score 1). (b) Intraoral digital radiograph. Evidence of enamel demineralization was not found (white arrow). (c) En face intensity image generated by 3D OCT. (d) Extracted 2D image of the area along the red line in d. Left: The contour line of the proximal surface was smooth without any cavitation. The brightness at the proximal enamel was increased penetrating approximately half thickness of the enamel (white arrow). Right: The contour line of the proximal surface was smooth. The brightness of superficial enamel was slightly increased (blue arrow). The dynamic slicing 3D video is presented in Supplementary Materials: Video 1.
