About Root Canals
The root canals in your mouth are tiny passageways. These small arteries branch off from the top of the tooth, descending downward, until they reach the root’s tip.
Each tooth has between one and four canals.
Infections involving a tooth that spread to the pulp, your tooth’s inner chamber, contain blood vessels, nerves and other tissues. Should the infection escalate, it can begin affecting the roots. Traumatic injury to a tooth can also compromise the pulp and that will lead to like problems.
A diseased inner tooth is accompanied by a host of issues including pain and sensitivity, which alert you to a problem. However, If the infection spreads, small pockets of pus can develop. That could lead to an abscess.