Metal free crowns- no black lines
If you have a dental crown, this article is for you. In the old days of dentistry, there were only a few types of crown. Namely:
1. Metal crowns
2. Gold crowns
3. Porcelain bonded to metal crowns
Now metal and gold crowns have their place, but they do not look like teeth! Porcelain bonded to metal crowns were devised to overcome this problem and still provide adequate strength. Over the years, these have proven to be a great success on the whole. However, they still contain metal and all too often a bla… READ MORE