A canker sore seems like it would be a small problem…until you have one. Then it’s all you can think about! Suddenly, brushing your teeth, having acidic foods or beverages like orange juice, and even enunciating your words becomes a lot more difficult. But what are canker sores in the first place? Are they harmful and should you have them looked at by a dentist? In this blog, you’ll get answers to those questions and find out how to prevent and treat this common (but painful) condition.