Figure 2.
Assessment of demineralisation along the restoration margin. (a) Diagrammatic illustration of the lesion assessment (modified from Hsu et al.1) Outer lesion depth, line A-C; wall lesion, area BCD (indicated with an arrow). (b) Micro-computed tomography image of the restoration margin after challenge with cariogenic bacteria. (c) Grayscale value profile along the path (yellow line in b). The start and end points of the demineralised lesion were determined according to the grayscale value. (d) Wall lesion was demonstrated in two restorations, between composite resin and the tooth.