When a tooth starts hurting intensely, many people arrive at the dental office feeling nervous. Sometimes they have spent nights without sleeping, avoided chewing on one side, or noticed that cold or hot drinks trigger sharp discomfort. In those cases, a root canal can help save the tooth when the pulp, the inner part where the nerves and blood vessels are located, has become inflamed or infected. And although many people feel anxious before treatment, knowing what to do befo