Signs You Need
a Root Canal
Root canal treatment saves teeth that would otherwise need extraction. Recognising the signs early means simpler, more comfortable treatment.
In short: you may need root canal treatment if you have a persistent or severe toothache, lingering sensitivity to hot or cold, pain when you bite down, swelling or a small pimple on the gum, or a tooth that is darkening. These are the key signs that the nerve inside your tooth is infected or dying — and seeing your dentist early usually means simpler, more comfortable care.
Clinically reviewed by Dr Sarah Metias (GDC 114267) · Last reviewed August 2026 · Last updated: August 2026
Warning Signs
Severe toothache. Pain that lingers after hot/cold. Darkening of the tooth. Swelling or tenderness in nearby gums. A recurring pimple on the gum. If you recognise these, book a check-up or emergency appointment promptly.
What Root Canal Involves
Root canal treatment removes infected pulp, cleans the canals and seals the tooth. A crown is usually placed afterwards. Modern root canal is comfortable — most patients report minimal discomfort.
Clinical Evidence & References
- American Association of Endodontists — Clinical guidelines
- NHS UK — Root canal treatment (nhs.uk/conditions/root-canal-treatment)
- Ng YL et al. (2011). "Outcome of primary root canal treatment." Int Endodontic Journal, 44(7), 583-609.
Ready to Take the Next Step?
Book your £40 Smile Consultation at Station House Dental Care