Sean K. Carlson,DMD, MS, associate professor in the department of orthodontics andsenior investigator in the Craniofacial Research and InstrumentationLaboratory at the University of the Pacific Arthur A. Dugoni School ofDentistry, is offering free podcasts on radiation and dental x-rays.

The podcasts, titled "The Risks of Dental X-rays" and "Understanding X-ray Dosimetry," are available on iTunes.