Getting dental x-rays every year may put you at higher risk of developing cancer. If you are having specific health issues then by all means consider getting an x-ray but otherwise possibly consider going without dental x-rays. A good dentist should be able to find problems without you needing annual dental x-rays.
SUPPLEMENTAL SOURCE: BOARD CERTIFIED EYE SURGEON, DR. DAVID EIFRIG AND NEWSLETTER AUTHOR OF RETIREMENT MILLIONAIRE APRIL 2012