Once a tooth is badly decayed, infected or necrotic (non-vital), it may require root canal therapy to restore oral health. Each tooth has an underlying sensory nerve used to detect hot or cold temperatures. However, when that nerve becomes infected or damaged by bacteria or trauma, it can create intense pain, sensitivity and health risks.
During root canal therapy, the affected nerve is removed, and the remaining canal space is cleaned, disinfected and sealed. After the procedure, the tooth can be restored with a crown or filling, depending on the extent of damage and the support needed after the root canal has healed. In many cases, root canal therapy can save a damaged tooth, and in virtually all cases, prevent serious infections that could spread to other parts of the body.