Why teeth become sensitive
Sensitivity happens when the softer layer under the enamel (dentine) is exposed. This can be caused by:
- Receding gums that uncover the root surface
- Brushing too hard or with a hard-bristled brush
- Worn enamel from grinding or acidic food and drinks
- A cavity, crack or leaking filling
- A few days after a cleaning or whitening
How we treat it
We first rule out a cavity or crack, which needs its own treatment. For general sensitivity, we may recommend a desensitising toothpaste, apply a protective coating to exposed areas, or treat gum recession. If you grind your teeth, we can discuss ways to protect them.
Frequently asked questions
Is sensitivity a sign of a cavity?
Sometimes. Sensitivity in one tooth that lingers after the cold is gone can point to a cavity or crack, so it is worth getting checked.
Do sensitivity toothpastes work?
For many people, yes. They usually need a few weeks of twice-daily use. Spit, don't rinse, after brushing so the paste can keep working.
Treatments that can help
- Gum TreatmentTreatment for bleeding, swollen or receding gums, from deep cleaning to laser care.Learn more
- Root Canal TreatmentSave an infected or painful tooth, often in a single sitting, with a rubber dam for a clean, comfortable procedure.Learn more
- Teeth WhiteningSafe, dentist-supervised whitening to lift stains from tea, coffee and tobacco.Learn more
This guide is general information, not a diagnosis. For advice about your own teeth, please book a visit.