In the last 15 years, the art and science of dental porcelain has changed dramatically. Gone are the crowns made with a combination of metal and porcelain. These crowns, though an improvement over yellow gold, had problems with discolored edges along the gumline and zero light transmission to mimic the bright, natural appearance of teeth. The advances in material science have made it possible to make teeth with crowns look like natural enamel and the underlying tooth structure. These photos show the difference between the previous generation of materials and what we can offer today.