Does the tooth need root canal cure?

You can bear it. From the description above, your teeth have been developed from pulpitis to periapical inflammation. Now the tooth doesn't hurt, it could be the pulp is dead. There is a pain in the nose, maybe an abscess in the root, and a root canal. I suggest you go to the dentist earlier. As for the dentures, if the pulp is really dead, I suggest that you are still a porcelain crown, because after the pulp necrosis, after a few years your teeth will become gray, affecting the appearance of the tooth.