You would be surprised how often we get emails from parents asking about something they see in the mouth. Inevitably we ask them to email a picture and inevitably those pictures are not good enough to see what is there.
Cell phones take great intra-oral (tooth) pictures — they have a very small sensor and hence a small aperture to create a deep depth of field (everything stays in focus) and they have the flash very close to the lens. You don’t need an expensive macro photograph rig, but you do need to set up your phone properly.
Here is how to set up your phone to take good intra-oral pictures.