Fig 4. Example of diagnostic and non-diagnostic front teeth photos taken by parents.

Examples of a child’s front teeth photo taken by their parents using the AICaries app. The image on the left is clear and diagnostic by including all anatomic structures of the upper front teeth and had a correct diagnosis by AICaries algorithm (all upper front teeth are healthy without tooth decay, marked with green boxes). The image on the right is clear but not diagnostic because the lower lip partially covers the anatomic structure of the upper front teeth. Due to the incomplete tooth picture, AI algorithm did not make correct caries screening for all upper front teeth, two healthy teeth were marked as “Early Tooth Decay” with orange boxes.