DEAR DOCTOR K: How often does my dentist need to take X-rays of my teeth? I'd like to minimize my exposure to radiation.
DEAR READER: Virtually everyone who visits the dentist will have X-rays taken at some point. They are valuable for uncovering problems in places the dentist can't see with the naked eye. X-ray images can reveal cavities inside and between the teeth. They can show wisdom teeth that have failed to come through the gum, and bone deterioration below the gum line.