Sean K. Carlson, DMD, MS, associate professor in the department of orthodontics and senior investigator in the Craniofacial Research and Instrumentation Laboratory at the University of the Pacific Arthur A. Dugoni School of Dentistry, 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.