Types of X-rays
- Periapical - single tooth, whole root; taken as indicated
- Bitewing - usually back teeth, half upper / half lower; usually two or four taken
- Full-mouth - all teeth, with both bitewing and periapical x-rays
- Panoramic - single film, entire mouth
- Cephalometric - side view of head for orthodontic measurements
X-ray intervals are determined by the risk. If new cavities or gum problems are detected, your risk for problems detectable by x-rays is greater and the interval should be shorter, otherwise the interval can be longer because of a lower risk level.
Recommended x-ray intervals:
Full mouth/panoramic x-ray - once every 3-5 years bitewing x-rays and PA's - once a year