Radiation levels used by dentists sparks concern

In an investigation conduced by The New York Times, findings have shown that many dentists employ outmoded X-ray film that requires significantly high amount of radiation. Orthodontists are also starting to use a device that requires the same, if not more amount of radiation in order to be effective.

http://www.nytimes.com/2010/11/23/us/23scan.html?_r=1&hp