The DIAGNOdent pen in the image above uses ultraviolet light. Which spectrum would reveal to the dentist the presence of a cavity?

recognise the main features of the oral cavity

When using the DIAGNOdent pen, what would be a sign of a healthy tooth?

name the various tooth surfaces and features

Fill in the blank. Whitening materials penetrate the teeth enamel into the ________. Type the correct answer into the space provided.

A UV/Vis spectrum shows an absorbance peak at 452 nma. What colour of the visible spectrum does this wavelength represent?