A root canal treatment is a dental procedure used to treat infection at the center of a tooth (the root canal system). It's needed when the dental pulp, which contains nerves and blood vessels, becomes infected due to decay, a deep filling, or damage from trauma. The treatment involves removing the infected pulp, cleaning and disinfecting the root canal, and then filling and sealing it to prevent further infection.

Common signs include severe toothache pain upon chewing or application of pressure, prolonged sensitivity or pain in response to hot and cold temperatures, discoloration of the tooth, swelling and tenderness in the nearby gums, and a persistent or recurring pimple on the gums. Any of these symptoms should prompt a visit to your dentist.

Root canal treatments today are much less painful thanks to modern techniques and anesthesia. Most people compare the procedure to having a filling placed. You may experience some discomfort or mild pain for a few days after the treatment, which can usually be managed with over-the-counter pain medications.

After a root canal, it's important to minimize chewing on the affected side until the tooth is fully restored with a permanent filling or crown, as this helps avoid recontamination or breaking the tooth. Continue brushing and flossing as usual, and follow any specific instructions your dentist might give. A follow-up appointment might be necessary to ensure the area is healing properly.

The length of a root canal treatment can vary depending on the complexity of the problem and the specific tooth affected. Most procedures take between 45 minutes to 1.5 hours per session.

You should wait until the numbness in your mouth wears off before eating to avoid accidentally biting your cheek or tongue. It's best to start with soft foods that require little chewing and avoid very hot or cold beverages for a few days. Gradually return to your normal diet as comfort permits.