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9033 Dental

Which of the following is not true about DIAGNOdent?

AIt is based on the phenomenon of laser-induced fluorescence of the enamel.
BPorphyrins present in carious tissue fluoresce when stimulated by DIAGNOdent.
CIt may not provide accurate estimation of caries lesion depth since it is detecting porphyrin fluorescence and not mineral content of enamel crystal structure.
DUses energy conversion technology (PTR-LUM) to image and examine the tooth. (Correct Answer)