Certain dental X-rays may increase the risk for a type of brain tumor called a meningioma. Although these growths are not usually cancerous, they can cause serious symptoms including headaches, vision or hearing loss, memory difficulties or seizures. The study examined 1,400 people diagnosed with meningiomas between 2006 and 2011. They were matched to people without meningiomas to make a comparison. Those with tumors were more likely to report having had yearly dental X-rays of the rear molars or the entire jaw.
The American Dental Association generally recommends that such X-rays be done every two to three years, to minimize radiation exposure. Even though meningiomas are more common in people who have had frequent dental X-rays, they still are quite rare. The researchers point out that they have found an association, not proof that dental X-rays caused the tumors.
