When you see your dentist for a routine checkup, you might expect to hear good news. After all, you try to take good care of your teeth, and your mouth is not in any pain. It may come as a big surprise, then, if you learn that you need to undergo root canal therapy. What are some signs that a root canal is necessary? Why this procedure sometimes necessary even when a patient is not in pain? Read on below to learn the answers.
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