Why would I need a crown?

Teeth should be crowned if, after your dentist has removed all decay, insufficient tooth structure remains to resist the forces of mastication without cracking. In other words, if so much tooth has been removed that the tooth may break or develop cracks, dentists recommend crowning. Crowns protect teeth and make it less likely that they will crack. Many crowns are placed because teeth that were filled have developed cracks and need to be protected. Cracks in teeth under and next to fillings are probably the leading cause of sensitive teeth. Often after crowning the teeth are comfortable and "happy".