What are the signs that you need a root canal? - Root Canal :: Why you may not need it: Proven Natural Remedy - gigj.com

The signs are usually throbbing, sensitivity to hot aswell as cold. Or no sensitivity to cold at all, which means the nerve in the tooth is already dead (hold an ice cube to it). Or you might have an abcess.

Do you mean actual root canals? Depending on the tooth you can have up to 3 canals. Some people have 4, but that's very unusual.

Root Canal :: Why you may not need it: Proven Natural Remedy::
As shown below, the need for a root canal is based on the amount of pain one feels under a tooth. What are the signs of needing endodontic treatment?
http://www.ascendedhealth.com/gum-disease/root-canal.htmHOME

Upper teeth - The front teeth (incisors, lateral incisors and canines) all have just the one root, the first pre molar has 2 roots and the second pre molar has one. The molars all have 3 roots.

Lower teeth - The incisors, lateral incisors, canines and pre molars have 1 root and the molars have 2.

Usually when someone has a root canal treatment the dentist recommends a crown, as the tooth is now hollow and may crumble in the future which will result in extraction.

Or do you mean how many root canal treatments can you have? It's totally up to you, if you want to keep trying again and you're willing to pay then go for it as many times as you want.

Washington, D.C. Root Canal dentist, Toothache, Tooth Pain, DC::
There are a number of reasons why one of your teeth may need a root canal. the nerve, or a crack in the tooth that extends into the nerve of the tooth.
http://www.georgetownsmile.com/our_services/Root_Canal_Endodontics.htmHOME

Usually a lot of pain, sometimes swelling around the tooth. You really won't know until the dentist looks at it. As for how many... Well most people have 32 teeth, so you could have root canals on each one. Believe me, I am always shocked if I have a problem and the dentist says that tooth doesn't already have one. Also if you can somehow afford it get a crown on it afterwords, my dentist has had to do a lot of filling in of brittle teeth that have broken pieces over the years due to not being able to afford the crowns. And most insurances will not pay for a crown after a set time saying it should have been done with the root canal.

Deep cavities allow germs to get into the pulp chamber. These germs cause infection, and the pulp dies. The pus from the infection eventually builds up at the root tip and makes a hole in the bone. This is called an abscess.

A blow to a tooth may also cause the pulp to die and then become infected. An infected tooth will never heal on its own, and as it gets worse, it will continue to be a source of infection that weakens your immune system. This can affect your entire body. This damage to the bone and the swelling inside the bone can also be excruciatingly painful, and even life-threatening. Years ago, an infected tooth would have to be extracted, but today, your dentist can save your tooth with root canal treatment.

For more information see links below.