Quick answer: Root canal treatment removes infected or inflamed pulp from inside a tooth, cleans and disinfects the root canals, and seals them so the tooth can be kept instead of extracted. It is usually done under local anaesthesia, feels similar to having a filling, and most people return to normal routines the next day.
The word “root canal” makes many people nervous, but the procedure is designed to relieve pain, not cause it. When the soft tissue inside a tooth (the pulp) becomes infected, the pain usually comes from the infection itself. Treating it early is often the most reliable way to keep your natural tooth.
Key takeaways
- Persistent pain, lingering sensitivity to hot or cold, gum swelling or a darkened tooth can be signs of pulp damage.
- Only a clinical examination with dental X-rays can confirm whether root canal treatment is needed.
- Treatment is carried out under local anaesthesia and is typically completed in one or more visits.
- A crown is often recommended afterwards to protect back teeth from fracture.
What is the dental pulp and why does it get infected?
Every tooth has a hollow space at its centre that contains the pulp: nerves, blood vessels and connective tissue. The pulp can become inflamed or infected when bacteria reach it through deep decay, a crack or chip, a leaking old filling, or repeated dental work on the same tooth. A knock to the tooth can also damage the pulp, sometimes without any visible crack.
Once the pulp is infected it cannot heal on its own. Left untreated, the infection can spread to the bone around the root tip and cause an abscess.
What are the signs that you might need a root canal?
Symptoms vary, and some infected teeth cause no pain at all. Common warning signs include:
- Persistent or throbbing toothache, especially one that wakes you at night.
- Sensitivity to hot or cold that lingers for more than a few seconds after the trigger is removed.
- Pain when biting or chewing on one particular tooth.
- Swelling or tenderness in the gum near a tooth, or a small pimple-like bump that may release pus.
- Darkening or discolouration of a single tooth.
These symptoms can also have other causes, such as gum problems or a cracked filling. That is why a proper endodontic assessment with X-rays is essential before any treatment is recommended.
What happens during root canal treatment?
The exact steps depend on the tooth, but a typical treatment follows this sequence:
- Diagnosis: the dentist examines the tooth, tests its response and takes X-rays to see the root shape and any infection around it.
- Anaesthesia: the area is numbed so you stay comfortable throughout.
- Access and cleaning: a small opening is made in the crown of the tooth, the infected pulp is removed and the canals are cleaned, shaped and disinfected.
- Sealing: the canals are filled with a biocompatible material and sealed to prevent bacteria from re-entering.
- Restoration: the tooth is closed with a filling and, in many cases, later protected with a dental crown.
Some teeth can be completed in a single appointment; teeth with severe infection or complex root anatomy may need two or more visits.
Is root canal treatment painful?
With modern local anaesthesia, most patients describe the procedure as similar to having a large filling. It is normal for the tooth and gum to feel tender for a few days afterwards, particularly when biting. This usually settles with over-the-counter pain relief as advised by your dentist.
How long is the recovery after a root canal?
Most people go back to work or study the same day or the next. To support healing:
- Avoid chewing hard food on the treated tooth until it has been fully restored.
- Keep brushing and cleaning between your teeth as normal.
- Take any medication exactly as prescribed.
- Contact your dentist if swelling increases, pain becomes severe, or the temporary filling comes out.
Root canal or extraction: which is better?
Keeping your natural tooth is usually preferable when it can be saved. A natural tooth maintains your bite, chewing efficiency and the bone around it. If a tooth is extracted, the gap often needs replacing with an implant, bridge or denture to prevent neighbouring teeth from drifting. Your dentist will explain the options if a tooth cannot be predictably saved.
When should you see a dentist?
Book an examination if you have tooth pain lasting more than a day or two, sensitivity that lingers, or any swelling of the face or gums. Facial swelling with fever needs prompt attention. You can request an appointment at CADIL in Eranhipalam, Kozhikode for an assessment.
