Root canal treatment: what to expect

Why you might need one

Inside each tooth is the pulp, soft tissue containing nerves and blood vessels. Deep decay, a crack, repeated dental work or a knock can inflame or infect the pulp. Once that happens, the pulp cannot heal on its own. Root canal treatment removes the damaged pulp, cleans and disinfects the canals, and seals them, allowing you to keep the tooth.

Signs include lingering pain with hot or cold, throbbing toothache, pain when biting, a darkened tooth, or a gum swelling or pimple near the tooth. Some infected teeth cause no symptoms and are found on X-rays.

Not every painful tooth needs a root canal. Sensitivity that disappears within a few seconds of a cold drink often comes from exposed roots or a small cavity and can be treated more simply. Your dentist will usually test the tooth with cold, tapping and sometimes an electric pulp test, and compare the X-ray with neighbouring teeth, before recommending treatment.

The procedure step by step

Treatment typically takes one or two visits of 60 to 90 minutes. Molars, which have three or four canals, take longer than front teeth. If there is active infection, your dentist may place a medicated dressing and complete treatment at a second visit.

• Diagnosis: examination and X-rays, sometimes a CBCT scan for complex anatomy.
• Local anaesthetic to numb the tooth and surrounding area.
• A rubber dam, a thin sheet that isolates the tooth and keeps it clean and dry.
• An opening in the top of the tooth to reach the pulp chamber.
• Cleaning and shaping the canals with fine instruments and disinfecting solutions.
• Filling the canals with a rubber-like material called gutta-percha and a sealer.
• A temporary or permanent filling to seal the opening.
• A crown or onlay, usually on back teeth, a few weeks later.

Does it hurt?

The reputation for pain is mostly out of date. With modern local anaesthetic, most patients say the procedure feels similar to having a filling. The pain people associate with root canals is usually the toothache before treatment, which the procedure relieves.

After treatment, the tooth may be tender to bite on for a few days, especially if there was infection. Over-the-counter pain relief usually manages this if it is safe for you. Contact your dentist if you have increasing pain or swelling after a few days. If you are anxious, tell the clinic when booking; many offer longer appointments, numbing gel before injections, or sedation.

Why a crown is often needed afterwards

A root-treated tooth has often already lost structure to decay or old fillings, and the access opening removes a little more. Back teeth take heavy chewing forces and are prone to cracking after a root canal. A crown or onlay holds the tooth together and seals it against bacteria, and studies show root-treated back teeth last significantly longer when they are covered.

Front teeth with little damage may only need a filling. Where enough tooth remains, a partial crown or onlay can protect a back tooth while preserving more natural structure than a full crown. Your dentist will advise based on how much tooth is left.

Success rates and alternatives

Root canal treatment has high success rates, commonly reported at 85 to 95 percent for first-time treatment, depending on the tooth and the infection. Teeth can be re-treated if problems recur, or a minor surgery called an apicoectomy can treat infection at the root tip.

The main alternative is extracting the tooth. That is cheaper on the day, but leaving a gap can cause neighbouring teeth to drift, and replacing the tooth with an implant or bridge usually costs more than saving it. When a tooth can be saved predictably, most dentists recommend saving it.

Root-treated teeth can still decay, so regular check-ups and good cleaning between teeth remain important. A tooth that has had a root canal does not feel temperature, so decay can progress without warning signs.

Aftercare in the first weeks

Until your permanent filling or crown is fitted, the tooth is more fragile than normal. Avoid chewing hard or sticky foods on that side, and do not leave a temporary filling in place for months, as it can leak and let bacteria back in. Most dentists recommend fitting the crown within a few weeks.

Some tenderness when biting is normal for a few days. Contact your dentist if you notice swelling, a bad taste, pain that gets worse rather than better after three days, or if the temporary filling falls out. Keep brushing and cleaning between your teeth as usual, and have the tooth checked with an X-ray at a later visit to confirm healing.

General dentist or endodontist?

Many general dentists carry out root canals on straightforward teeth. An endodontist is a specialist in root canal treatment who uses an operating microscope and handles complex anatomy, curved or blocked canals, and re-treatments of previous root canals. Your general dentist may refer you if your case is complex.

Costs in Dubai

Typical published prices in Dubai, as of October 2026: AED 1,200 to 2,500 for a front tooth, AED 1,500 to 3,000 for a premolar, AED 2,000 to 4,500 for a molar, and AED 2,500 to 6,000 for re-treatment. A crown afterwards adds AED 1,500 to 4,000. These are estimates; confirm with the clinic. Root canals are basic restorative treatment and are covered by many UAE plans that include dental, usually with a co-pay and pre-approval.