One of the things as a dentist that I learned from an early age is that we are constantly producing things for patients and you know when I got into dentistry our products were not very good. Most of everything that we did contained metal. In my experience with dentistry and the mouth and the overall health of people is anytime you are putting metal around something, most metals you tend to irritate the tissue and you tend to cause more trouble than not. Well about 15 years or so ago, we were able to use just strictly all porcelain materials. And when we restore patients’ mouth nowadays we don’t use any metals. The advantage of that is number one; you get a beautifully aesthetic restoration or material. But the number two is the overall health of the mouth benefits because you don’t have chronic inflammation. A lot of time you see people smile and they have like these blue and black lines above their teeth. There’s none of that. That’s chronic irritation and inflammation. Our porcelain body materials have none of that. We use that in the front and the back, to restore and fix people’s mouth.