Endodontics: root canal treatment, explained simply
Endodontics is the branch of dentistry that cares for the inside of the tooth: the soft pulp, nerves and root canals. An endodontist's main aim is to save natural teeth that might otherwise need to be removed. Dr S. Barath Kumar is an MDS Endodontist.
Common problems and symptoms
You may benefit from a check-up if you notice any of these:
- Toothache that lingers after hot or cold food
- Pain when chewing or biting
- A deep cavity or a large old filling
- Swelling or a small boil on the gum near a tooth
- A tooth that has turned darker after an injury
- Pain or infection returning in a tooth that already had a root canal
Treatments, step by step
Every mouth is different. This is a general outline of what treatment can involve.
Examination and X-ray
The dentist checks the tooth, asks about your symptoms and takes an X-ray to see the roots.
Numbing
The area is numbed with local anaesthetic so the treatment is comfortable.
Cleaning the canals
A small opening is made in the tooth. The infected or inflamed pulp is removed and the canals are cleaned and shaped. A dental operating microscope gives magnification and light to see fine and hidden canals.
Filling and sealing
The cleaned canals are filled and sealed to help stop bacteria getting back in.
Restoring the tooth
The tooth is rebuilt with a filling, and often a crown, to protect it for everyday chewing.
Root canal failed elsewhere? A tooth that already had a root canal can sometimes become troublesome again. In many cases it can be retreated: the old filling is removed, the canals are cleaned again and resealed. Read our failed root canal and retreatment section to learn more.
Ask us whether this treatment is right for you.
Aftercare tips
- Some tenderness for a few days is common. Follow the pain relief advice you are given.
- Avoid chewing hard food on the treated tooth until it is fully restored.
- Get the final filling or crown done on time, as advised.
- Brush twice a day, clean between teeth and keep your review visits.
When to see a dentist urgently
- Swelling of the face, jaw or gum that is getting worse
- Fever along with tooth pain
- Severe pain that does not settle with the advice given
- Difficulty opening your mouth, swallowing or breathing (seek emergency care immediately)
Common questions
Is root canal treatment painful?
The tooth is numbed first, so most people find the treatment itself comfortable. Some tenderness afterwards is normal and usually settles in a few days.
Why do I need a crown after a root canal?
A tooth that needed a root canal has often lost a lot of structure. A crown can help protect it from breaking when you chew. The dentist will tell you if your tooth needs one.
Can a failed root canal be treated again?
Often, yes. Retreatment cleans and reseals the canals again. After an exam and X-ray the dentist can tell you whether your tooth can be saved.
Have a question about root canal treatment?
Message Dr S. Barath Kumar on WhatsApp or call the clinic. Ask us whether this treatment is right for you.
This page is general information and not a diagnosis. Please see a dentist for advice about your own teeth.
More dental care guides
Prosthodontics & implants
Crowns, bridges, dentures and implants for broken or missing teeth.
Read the guide →Periodontics (gums)
Bleeding gums, gum disease, scaling and deep cleaning.
Read the guide →Orthodontics
Braces and clear aligners for crooked or crowded teeth.
Read the guide →Children's dentistry
Children's teeth, first visits, fluoride and sealants.
Read the guide →Oral surgery
Tooth extractions and wisdom teeth, with clear aftercare tips.
Read the guide →Cosmetic dentistry
Teeth whitening, veneers and smile makeovers that look natural.
Read the guide →Preventive dentistry
Check-ups, professional cleaning and everyday home care.
Read the guide →Geriatric dentistry
Dental care for older adults: dry mouth, root decay, dentures and caregiver tips.
Read the guide →