Dental podcast: Welcome to DentalTalk. I'm Dr. Phil Klein. Today we'll be discussing how we choose either zirconia or emax for our CAD/CAM material. This of course involves understanding the features and benefits of both of these materials. Our guest, to help us clarify all this, is Dr. Our guest is Dr. Alex Vasserman, a cosmetic dentist who practices minimally invasive painless dentistry in the Upper East Side of New York City. He is an active member of several dental associations, including The American Academy of Cosmetic Dentistry and Kois Trained Dentist.