"Ah, here's the source of your pain. Cavities. When was the last time you flossed? Brushed even? You know you bla bla tartar buildup bla bla guilt trip like only a dentist can give."

First thing that came to mind when I saw that bottom left doodle.

Nice sketches, though. Fo some reasons, the bottom illustration reminds me (slightly) of some traditional Asian illustrations.