Dr. Oz may know his cardiologist but he sure does not know a thing about dentistry. Previous Dr. Oz dental debacles include bleaching your teeth with lemon juice and preventing gum disease through drinking cranberry juice. He continues the ineptitude by weighing in on the use of amalgam.
So here is a great link to an article in Forbes magazine calling out Dr. Oz for his failure to look at the facts. I think the real facts are that Dr. Oz is now more about entertainment then health care.