A dental crown is a tooth-shaped "cap" that is placed over a tooth -- to cover the tooth to restore its shape and size, strength, and improve its appearance. The crowns, when cemented into place ...

However, they vary in how closely they mimic teeth, depending on the material.Metal crowns will be that metal's color, which will look different from surrounding teeth. However, metal is also more ...

Today, some of the jewels come from different reigns and reflect ... the collection," the curator tells PEOPLE. Weighing nearly 5 lbs., the magnificent crown was created in 1661 from a solid ...