What They Are
Why does my tooth hurt when I drink cold water, eat candy bars or bite down hard? It looks normal in my mouth after all. If a tooth gets knocked, decayed, cracked or has deep fillings, the pulp (or nerve) of the tooth will signal an alarm to the rest of the body. By the time you get the dentist, the pulp could already be dying, leading to an infection in the bone around the root. Given the circumstances, the tooth could be saved by cleaning out the pulp of the tooth and restoring the crown back to it’s natural function.