The number one question we hear at dental conferences is, "Does impression material stain your lab coats?" I'm proud to say that the answer is no. Impression material is often used to obtain an impression of a patient's teeth and the surrounding oral tissues. A dental impression is created by placing the liquid impression material into the mouth, usually with a tray. As the material hardens, it creates a detailed reproduction. There are a wide variety of impression materials available each with their own properties, advantages and disadvantages, yet all of them are notorious for staining fabric. Medelita lab coats, however, are breathable 100% cotton treated with DuPont™ Advanced Dual Action Teflon® fabric protector, which repels and releases fluid, soil, and stains - including impression material. This ensures that your Medelita lab coat will remain clean and white with very little effort required. At the recent 2011 CDA Conference, Dr. Lam, DDS, asked us if he could put our claims to the test. In his words, "I came here and was very interested in the Medelita fabrics and the lab coats, but what does concern me is a lot of times, in our office, is that we get unwanted stains from impression material." We were happy to oblige his request, and the results are in the video below. Click on the video link to watch the ‘battle’ of impression material versus Medelita lab coats . . . and see for yourself who emerges victorious.