Root canal treatment (RCT) saves a badly decayed or infected tooth by removing the infected pulp inside it, cleaning and disinfecting the space, and sealing it — relieving pain and stopping the infection from spreading, without needing to extract the tooth. Modern RCT, done under local anaesthesia, is generally no more uncomfortable than getting a filling — most patients feel significantly better afterward, not worse, since the pain was almost always caused by the infection itself, not the treatment.
Delaying root canal treatment when it’s needed rarely makes the problem go away on its own — infection tends to spread, and what could have been a straightforward one-visit procedure can turn into a more involved case, or in some situations, tooth loss. If you’re dealing with a lingering toothache in Naxalbari, Panitanki, Khoribari, Batasi, or Hathighisa, it’s worth getting it checked early rather than waiting for it to become an emergency.
Signs you may need a root canal
Persistent or throbbing toothache
Pain that lingers, worsens when biting down, or wakes you at night.
Prolonged sensitivity
Sharp pain to hot or cold that doesn't fade quickly after the stimulus is removed.
Swelling or a gum boil
Tenderness, swelling near the tooth, or a small bump on the gum — a sign infection may have reached the tooth's root.
Tooth discoloration
A tooth darkening compared to neighboring teeth can indicate the pulp inside has died.
The tooth is numbed, an opening is made to access the pulp chamber, the infected pulp is removed, and the canal is cleaned, shaped, and disinfected. It's then filled and sealed, and typically capped with a crown afterward for long-term strength, since a root-canal-treated tooth becomes more brittle over time.
Most cases are completed in one to two visits of around 45-60 minutes, depending on the tooth and how advanced the infection is.
Root canal treatment has one of the best-documented long-term track records in dentistry — large retrospective studies following treated teeth for decades consistently show high survival rates, especially in the first ten years.
Tooth survival after root canal treatment, over time
Source: 5- to 37-year retrospective study — PMC (National Library of Medicine)
A long-term retrospective study following root-canal-treated teeth found survival rates of 97% at 10 years, gradually declining to 68% by 37 years — meaning the large majority of treated teeth remain in function for a decade or more, and a substantial share last a lifetime with proper care and a protective crown. Placing a crown after treatment is one of the biggest factors in long-term survival, since a root-canal-treated tooth becomes more brittle without its blood supply and is more vulnerable to fracture unprotected.