DINA GIESLER: The best way to describe a crown is it's a cap that we put on a tooth, and it's probably the best procedure we have to save a tooth. A patient needs a crown when the tooth has been ...

A hole filed from the crown of a Viking tooth into the pulp to reduce toothache ... round mirrors and soft toothbrushes under a strong bright light. They also took X-rays of the teeth using ...