A molar splits on a popcorn kernel at 9 p.m., and the first instinct is to call it a cavity. It rarely is. Every year, more than two million hospital emergency department visits involve dental pain, and most of those patients leave with antibiotics and no repaired tooth. That gap between a small restoration and a real emergency is where teeth get lost. Anyone searching for an emergency dentist in North Richland Hills at midnight deserves a sharper answer than “come in and we will take a look.