“…The use of different wavelengths can detect differences in the density, structure and chemical composition of the biological tissue, while fluorescence losses are appropriate for assessing the stage and depth of the caries infection [ 12 , 24 ]. Currently, approaches to caries visualisation based on the fluorescence of the intact and carious tissue assist dentists in providing minimally invasive treatment; moreover, they can do so without X-ray analysis [ 28 , 30 , 31 , 32 , 33 ], which can be inefficient, particularly when it is impossible to diagnose an incipient lesion and the destruction of tooth enamel in fissure system [ 26 , 30 , 33 ].…”