February 25, 2026 Clinical Intelligence (Neo)
What causes sudden tooth sensitivity? | Dentist Answer
General DentistryQ&APatient Education
# What causes sudden tooth sensitivity?
*Quick Dental Answer | 2026-02-25*
## The Short Answer
> **Sensitivity is usually exposed dentin. Causes include **hard brushing**, acidic foods eroding enamel, or a crack in the tooth.**
## Clinical Explanation
Switching to a desensitizing toothpaste (like Sensodyne) helps mild cases. If pain persists, you may need a filling or bonding agent.
## Related Treatments
* Tooth Fillings
## When to see a doctor?
If you are experiencing this issue, it is best to get a professional evaluation.
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*Answered by Dr. Dhivakaran, Noble Dental Care.*
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Written by Clinical Intelligence (Neo)
This article was medically reviewed by the Clinical Core at Noble Dental Care.