Root Canal Treatment: What Really Happens (and Why It Doesn't Have to Hurt)

Few dental words cause as much worry as "root canal". Most of that fear comes from stories told decades ago, before modern anaesthesia and instruments. Today, a root canal is a routine procedure whose purpose is to end your pain and save your natural tooth.

Why a tooth needs a root canal

Inside every tooth is soft tissue called the pulp, containing nerves and blood vessels. When deep decay, a crack or an injury lets bacteria reach the pulp, it becomes inflamed and infected. That's the throbbing toothache that wakes you at night. Left untreated, the infection can spread to the bone and form an abscess, and the tooth may eventually be lost.

What happens during treatment

1. Diagnosis. A digital X-ray and a few simple tests confirm which tooth is affected and how far the infection has spread.
2. Anaesthesia. The tooth and surrounding area are numbed, so you shouldn't feel pain during the procedure.
3. Cleaning. A small opening is made and the infected pulp is removed. Rotary files shape the canals, and an apex locator helps measure their exact length.
4. Disinfecting and sealing. The canals are rinsed with antibacterial solutions and sealed with a biocompatible material.
5. Restoration. The tooth is rebuilt with a filling, or, for heavily damaged teeth, a post, core and crown.

Can it be done in one visit?

Sometimes. Single-sitting root canal treatment is possible in selected cases: for example, when the infection is limited and the canals are straightforward. When a tooth is badly infected or has complex canals, it's safer to spread treatment over two or more visits so the tooth can be thoroughly disinfected between sessions. A good dentist will tell you honestly which approach suits your tooth.

What to expect afterwards

• Mild tenderness for a day or two is common and usually settles with simple pain relief.
• Avoid chewing hard foods on the treated tooth until it has been permanently restored.
• Back teeth usually need a crown to protect them from fracture.
• Keep brushing and flossing as normal.

When to see a dentist

Don't wait for the pain to become unbearable. See a dentist if you have a toothache that lingers, sensitivity that lasts after hot or cold has gone, swelling of the gum or face, or a pimple-like bump on the gum. Earlier treatment is simpler and gives the best chance of saving the tooth. Read more about root canal treatment at Shree Hari Dental Care.