Nobody sits in the dentist's chair hoping to hear the words "root canal", but the truth is, most root canals are completely preventable, and when they're not, they're far less frightening than their reputation suggests. Whether you're bringing the kids in for their first check-up or you've been putting off that nagging toothache for longer than you'd like to admit, here's what you need to know. Why Root Canals Happen in the First Place A root canal becomes necessary when the