We were about to take xrays on a patient today when she asked if we had heard about the recent Dr. Oz show in which he spoke about the increase in thyroid cancer among women. No, we hadn’t heard about it. Apparently Dr. Oz linked thyroid cancer to dental xrays and mammograms. I haven’t been able to find any serious studies linking dental xrays to thyroid cancer, but that is beside the point. The patient understood the importance of the dental xrays we were about to take, but she wanted to know if we used a thyroid guard (thyroid collar). Yes, we assured her that we do use a thyroid guard (collar). We placed the guard, just as we always do to assure maximum protection for our patients. The American Dental Association recommends that a thyroid guard be placed for all dental xrays.