This patient had a lot of old silver fillings and wanted to improve his smile. We did a full mouth rehabilitation. We began, 10 years ago, with all porcelain crowns on every tooth for full mouth rehabilitations. On some patients, particularly bruxers (people that grind their teeth), some of those crowns would fracture. There are much harder porcelains now, called zirconia, you cannot break with a hammer. Experience in full mouth rehabs is so important.