The dental pulp is an area in your tooth that protects your tooth's nerves. An infection in your tooth's dental pulp will also lead to inflammation in the tooth's nerves. This can be extremely painful to deal with, as it is marked by symptoms such as extreme sensitivity and intense pain. You can also suffer from an infected or inflamed tooth nerve without any pain. This can be dangerous as you will not notice the damage until a root canal is the only solution.