That blinding sharp pain . Sensitivity to heat and cold sending shockwaves through your jaw. You might have an infection in a tooth. Many smaller cavities can be treated with a standard filling. If the tooth has been neglected, then there are good odds that you are in need of root canal treatment.
Many patients put off getting a painful tooth looked at, for fear that a root canal is in their future. Root canal treatments have a bad reputation for being painful and simply awful. The truth is that getting your tooth treated will eliminate the pain that you are feeling as a result of the decay, damage and infection.