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. 2017 Nov 16;17:130. doi: 10.1186/s12903-017-0421-2

Fig. 2.

Fig. 2

a PSP-Bitewing radiograph showing proximal caries lesions in both the second premolar (scale 1) and first molar (scale 3) (arrow), (b) NILT image showing the carious lesion only for the second premolar (scale 1) and without any caries lesion (scale 5) for the first molar teeth