Root Canal Treatment

What Is Root Canal Treatment?

Root canal treatment — also called endodontic therapy — is a procedure used to save a tooth that has been severely infected or inflamed at its core. Every tooth has a soft inner layer called the pulp, which contains nerves, blood vessels, and connective tissue. According to the American Dental Association, when the pulp becomes infected due to deep decay, a cracked tooth, or trauma, the infection can spread to surrounding bone and cause serious health complications if untreated.

Root canal treatment removes the infected pulp, cleans and disinfects the root canals, and seals the tooth to prevent re-infection. The tooth is then restored — usually with a crown — to full function. "Root canal" has an undeserved reputation for being painful. In reality, modern root canal treatment relieves the pain of a toothache, not causes it.

Signs You May Need a Root Canal

• Severe toothache, especially when chewing or applying pressure
• Prolonged sensitivity to hot or cold temperatures
• Darkening or discoloration of the tooth
• Swollen, tender gums near the affected tooth
• A persistent pimple or abscess on the gum
• A cracked or chipped tooth with pain

Some infected teeth cause no symptoms at all — which is why regular dental exams and X-rays are essential for catching problems early.

Source: American Dental Association — Root Canals (MouthHealthy.org)

The Root Canal Procedure

Dr. Li begins by taking X-rays to assess the extent of infection and the shape of the root canals. Local anesthesia is administered so the area is completely numb — you should feel little to no discomfort during the procedure. A rubber dam is placed around the tooth to keep it clean and dry. An opening is created in the top of the tooth, and the infected pulp tissue is carefully removed with specialized instruments.

The root canals are cleaned, shaped, and disinfected with antimicrobial solution. The canals are then filled with a rubber-like material called gutta-percha to seal them against future bacterial invasion. A temporary filling is placed to close the tooth. At a follow-up appointment, the temporary filling is replaced with a permanent crown, which restores the tooth's strength and protects it from fracture. According to the ADA, a properly treated and restored tooth can last a lifetime.

Is Root Canal Treatment Painful?

One of the most persistent dental myths is that root canals are extremely painful. The truth is that most patients experience little to no discomfort during the procedure — the anesthesia is very effective, and the treatment is often compared in sensation to getting a filling. You may experience some soreness or sensitivity for a few days after the procedure, which can be managed with over-the-counter pain relievers. Dr. Li's gentle technique minimizes discomfort at every step.

After Root Canal Treatment

Avoid chewing on the treated tooth until it has been permanently restored with a crown. Continue brushing and flossing normally, taking care around the treated area. Keep your follow-up appointments — the temporary filling needs to be replaced with a permanent restoration within a few weeks. Most patients return to normal activities the day after treatment.