Signs you may need a root canal
Persistent tooth pain, pain while chewing, or lingering sensitivity to hot and cold can point to pulp inflammation or infection.
A tooth that has deep decay, a large fracture, or a history of repeated fillings may need endodontic treatment to be saved.
Swelling, a pimple on the gums, or tenderness around one tooth can indicate an infection that needs urgent evaluation.
Some infected teeth cause very little pain, which is why X-rays and clinical testing matter before assuming the tooth is fine.

