after 1st session
45-90 minutes
Usually 1 to 3 sessions maximum
none
Modern root canal treatment is performed under local anesthesia and is generally not painful. Most patients describe it as similar to having a dental filling.
You may need root canal treatment if you have persistent pain, sensitivity to hot or cold, swelling, or if your dentist detects infection on an X-ray.
After the procedure, the tooth may be sensitive for a few days. It is usually restored with a filling or crown to protect and strengthen it.
Yes, with proper care and restoration, the treated tooth can function just like any natural tooth for many years.
If the treatment is done properly and good oral hygiene is maintained, reinfection is unlikely. However, retreatment may be needed in rare cases.
Root canal treatment (endodontics) is a dental procedure used to treat infection at the centre of a tooth.
Root canal treatment is not painful and can save a tooth that might otherwise have to be removed completely.
The infection at the centre of a tooth (the root canal) is caused by bacteria that live in the mouth and invade the tooth.
This can happen after:
tooth decay
leaky fillings
damage to teeth as a result of trauma, such as a fall
A tooth is made up of two parts:
Crown – the top part of the tooth that's visible in the mouth
Root – extends into the bone of the jaw, anchoring the tooth in position
Teeth also consist of:
Enamel – the hard outer coating
Dentine – a softer material that supports the enamel and forms most of the tooth
Cementum – a hard material that coats the root's surface
Dental pulp – the soft tissue at the centre of the tooth
The root canal system contains the dental pulp and extends from the crown of the tooth to the end of the root.
A single tooth can have more than one root canal.
Root canal treatment is needed when dental X-rays show that the pulp has been damaged by a bacterial infection.
The pulp may become inflamed if it's infected by bacteria, allowing the bacteria to multiply and spread.
pain when eating or drinking hot or cold food and drink
pain when biting or chewing
a loose tooth
As the infection progresses, these symptoms often disappear as the pulp dies. Your tooth then appears to have healed, but the infection has in fact spread through the root canal system.
pain when biting or chewing returning
swelling of the gum near the affected tooth
pus oozing from the affected tooth
a swollen cheek or jaw
the tooth becoming a darker colour
It is important to see your dentist if you develop toothache.
If your tooth is infected, the pulp cannot heal by itself. Leaving the infected tooth in your mouth may make it worse.
There may also be less chance of the root canal treatment working if the infection within your tooth becomes established.
Antibiotics are not effective in treating root canal infections, though they can help treat infections that spread beyond the root.
To treat the infection in the root canal, the bacteria need to be removed.
This can be done by either:
removing the bacteria from the root canal system (root canal treatment)
removing the tooth (extraction)
However, removing the tooth is not usually recommended, as it's better to keep as many of your natural teeth as possible.
Before having root canal treatment, you’ll usually be given a local anaesthetic.
This means the procedure should be painless and no more unpleasant than having a filling.
After the bacteria have been removed, the root canal is filled and the tooth sealed with a filling or crown.
In most cases, the inflamed tissue near the tooth will heal naturally.
Root canal treatment is usually successful. In about 9 out of 10 cases, a tooth can survive for up to 10 years after root canal treatment.
It's important to look after your teeth when recovering from root canal treatment.
Avoid biting on hard foods until your treatment is complete.
After your final treatment, your restored tooth should no longer be painful, although it may feel sore for a few days.
You can take over-the-counter painkillers, such as paracetamol or ibuprofen, to relieve any discomfort.
Return to your dentist if you still have pain or swelling after using painkillers.
In most cases, it's possible to prevent the need for further root canal treatment by:
keeping your teeth clean
avoiding too much sugary food
quitting smoking if you smoke
Find out how to take care of your teeth and gums from your dentist at Paramount Medical Center.