What is best cement for a gold crown? Does the cement have any potential side effects?

There are so many different cements that we use for different procedures. Most of them are very good. I personally use a glass ionomer cement for my gold crowns called Fuji I. I know of dentists that use the "old" type of cement called zinc phophate with excellent results as well!

Hello, 
It's better for you to visit your dentist they are the only one that could cement a gold crown. And for what i know it doesn't have any side effects.