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Root canal treatment

Root Canal Treatment in Orchard, Singapore

Save your own tooth. We clean, disinfect and seal the infected canals inside it under a microscope, at Forum The Shopping Mall on Orchard Road.

Dentist performing root canal treatment under a dental microscope at Align Dental Surgery, Orchard Road

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Quick facts

Root canal treatment at Align Dental Surgery: quick facts
What it treatsInfected or inflamed pulp (nerve) inside a tooth
Who treats youOur general dentists for most cases; our endodontist for complex cases, re-treatment and apicectomy
Anaesthetic and sedationLocal anaesthetic; nitrous oxide or IV sedation for anxious patients
Number of visits1 or 2, depending on the tooth and how infected it is
How it's doneUnder a dental microscope on every root canal, with a rubber dam to keep the tooth clean
RecoveryMild tenderness when biting for 2 to 3 days; most people return to work the same or next day
After treatmentA crown is usually recommended, especially on back teeth
Success rateOver 90% overall in published studies; lower for re-treatment
Location583 Orchard Road, #01-07/08/09, Forum The Shopping Mall, Singapore 238884

Why would you need a root canal?

Inside every tooth is the pulp, a soft core of nerves and blood vessels. Once bacteria reach the pulp, or it is badly damaged, it becomes inflamed or infected.

It cannot heal on its own, and the infection can spread through the root tip into the jawbone and form an abscess. Root canal treatment removes the damaged pulp so you can keep the tooth instead of losing it.

Without treatment, the infection does not go away, and the alternative is usually removing the tooth.

The pulp usually becomes infected or damaged because of

  • Deep decay that has reached the pulp
  • A cracked or chipped tooth, which lets bacteria in
  • Large or repeated fillings, which irritate the pulp over time
  • A leaking old filling or crown, with decay starting underneath
  • A knock or injury to the tooth; the pulp can die months or even years later, sometimes without a visible crack

Signs you may need a root canal

Some infected teeth cause no pain at all and are found on an X-ray. We confirm the diagnosis with tests and imaging, including a 3D CBCT scan taken in-clinic when the anatomy needs a closer look.

  • Toothache that throbs, wakes you at night or comes on by itself
  • Lingering sensitivity to hot or cold, after the drink is gone
  • Pain when biting or pressing on the tooth
  • Swelling of the gum or face, or a pimple-like bump on the gum
  • A tooth that has turned grey or darker

Root canal or extraction?

Keeping your own tooth is usually the better long-term option when it can be saved. A missing tooth lets neighbouring teeth drift and may later need an implant or bridge to replace it.

Dentist explaining a tooth cross-section on screen to a patient before root canal treatment
Root canal and crown compared with extraction
ComparedRoot canal + crownExtraction
Keeps your natural toothYesNo
VisitsUsually 2 for the root canal, then the crownUsually 1
Next stepCrown to protect the toothImplant, bridge or denture to fill the gap, or leave a gap
Best whenEnough healthy tooth and root remainThe tooth is cracked through the root or too broken down to restore

We will tell you honestly if a tooth cannot be saved, and talk you through the alternatives.

What happens during treatment

Front teeth usually have one canal, premolars one or two, and molars three or four. Back teeth therefore take longer.

Visit 1

  1. Numbing. We numb the tooth with local anaesthetic and check it is fully numb before starting.
  2. Isolation. A thin rubber sheet (rubber dam) goes around the tooth. It keeps saliva and bacteria out and stops small instruments falling into your throat.
  3. Access. A small opening is made in the top of the tooth to reach the pulp chamber.
  4. Cleaning and shaping. Under the microscope, fine instruments remove the infected pulp and shape each canal. An apex locator measures the canal length precisely.
  5. Disinfecting. The canals are rinsed with disinfecting solutions, and a medicine is often placed inside.
  6. Temporary filling. The tooth is sealed with a temporary filling until the next visit.

Visit 2

  1. Final cleaning. The canals are checked and rinsed again.
  2. Sealing. The canals are filled with an inert, rubber-like material (gutta-percha) and sealer, closing them off from the jawbone.
  3. Core filling. The top of the tooth is rebuilt, ready for a crown.
  4. X-ray check. A final X-ray confirms the canals are well sealed.

Single visit or two visits?

When the tooth is not badly infected and the canals are straightforward, all of these steps can be done in one longer visit.

When there is active infection or swelling, we usually split treatment over two visits so the medicine can settle the infection first. We will tell you which applies to your tooth before starting.

After your treatment

Mild tenderness when biting is normal for two to three days. Over-the-counter pain relief usually controls it.

A root-canal-treated tooth has lost its inner blood supply and is often already weakened, so it is more brittle and can darken. A crown protects it and gives it the best chance of lasting.

Do

  • Take pain relief as advised
  • Eat once the numbness wears off
  • Brush and floss as normal
  • Call us if swelling, severe pain or a lost filling occurs

Don't

  • Chew on the treated side until the crown is fitted
  • Bite on hard foods (nuts, ice, bones) with the temporary filling
  • Delay the crown; an unprotected tooth can crack
  • Ignore pain that gets worse after 3 days

How well it works

Published studies show root canal treatment succeeds in more than 90% of cases overall. Working under a microscope helps us find and clean narrow or extra canals that are easy to miss.

Success is lower when

  • The infection is extensive
  • The canals are narrow, curved or calcified, usually in back teeth
  • The tooth is being re-treated after an earlier root canal (around 70%)

Complex cases: re-treatment and root-end surgery

Some teeth need more specialised care. These are treated in-house by our endodontist, a dentist with specialist training in root canal treatment.

  • Re-treatment of a previously root-canal-treated tooth that has become infected again
  • Apicectomy (root-end surgery), when infection at the root tip cannot be reached through the tooth, for example under an existing crown or post
  • Difficult anatomy, such as calcified, curved or extra canals
  • Resorption, where the tooth's root is being broken down from inside or outside

Questions & answers

Root canal treatment: common questions

Is root canal treatment painful?
It is done under local anaesthetic, so it should feel much like a deep filling. The treatment relieves the pain an infected tooth causes. Mild tenderness when biting for two to three days afterwards is normal. If you are anxious, we offer nitrous oxide or IV sedation.
How long does a root canal take?
A root canal takes one or two visits, depending on the tooth and how infected it is. Front teeth are usually quicker than molars, which have more canals.
How do I know if I need a root canal?
Common signs are throbbing or night-time toothache, lingering sensitivity to hot or cold, pain on biting, gum swelling or a darkened tooth. Some infected teeth have no symptoms. Only an examination and X-ray can confirm it.
Who will do my root canal?
Our general dentists treat most root canals. Complex cases, re-treatments and root-end surgery are handled in-house by our endodontist. Every root canal at Align is done under a dental microscope.
Can a root canal be done in one visit?
Yes, when the tooth is not badly infected and the canals are straightforward. Teeth with active infection or swelling usually need two visits so the infection can settle first.
Is it better to have a root canal or pull the tooth out?
If the tooth can be saved, a root canal and crown usually keep it working for many years. Removing it often leads to an implant or bridge later. We will tell you honestly if a tooth cannot be saved.
Do I need a crown after a root canal?
In most cases, especially for back teeth, yes. A treated tooth is more brittle and can crack under biting forces. A crown protects it. Some sound front teeth can manage with a filling.
Can I go to work after a root canal?
Most people return to work the same day or the next day. We can issue a medical certificate if you need one.
When can I eat after a root canal?
Wait until the numbness wears off so you don't bite your cheek or tongue. Avoid chewing hard food on that side until the crown is fitted.
What is the success rate of root canal treatment?
Published studies show more than 90% success overall. It is lower for extensive infection, curved or narrow canals and re-treatment (around 70%). We will give you a realistic outlook for your tooth.
What affects the cost of a root canal?
Cost depends mainly on which tooth is treated, since molars have more canals than front teeth. Re-treatment, curved or calcified canals and the need for a crown also affect it. We give a written estimate before starting.
What if my root-canal-treated tooth hurts again?
A previously treated tooth can become reinfected, for example through a leaking filling or a missed canal. Our endodontist can often re-treat it or perform an apicectomy in-house. Contact us if pain or swelling returns.
Do you see emergency toothache cases?
Yes. WhatsApp or call us and we will try to see you the same day.

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