While moderate to severe tooth pain is a common indication that a root canal is necessary, it isn’t the only sign that something is wrong with your smile. Even if you aren’t experiencing any discomfort, or if any pain has suddenly vanished, it does not mean that your pearly whites are healthy again. In most cases, a tooth that no longer signals any sensations can have heavily damaged nerves due to trauma or infection. Though this might not seem like an urgent situation, you’ll still need to schedule a root canal as quickly as possible to avoid further damage or prevent the spread of bacteria.