Type of dental X-ray may up brain tumor risk

April 10, 2012 9:48:02 AM PDT
Researchers suggest people who have had certain kinds of dental X-rays in the past may be at an increased risk of a commonly diagnosed brain tumor.

The findings from a study in the journal Cancer do not prove that radiation from the imaging caused meningioma, but rather scientists are most concerned about people who had bitewing X-rays in the past when exposure levels were much higher.

The study concluded panoramic X-rays taken at a young age, especially if done yearly or more often before age 10, raised the risk of meningiomas by up to five times.

The American Dental Association questions the study, noting that the results relied on participants' memories of how often they had different types of X-rays years earlier.