How to Stop Sensitive Teeth Pain: What Works, and How Quickly

What sensitive teeth feel like, and why

Sensitivity is a sharp, sudden and short-lived pain¹ when a tooth meets cold, heat or touch. It often comes from a root surface left exposed where the gum has receded. Under the enamel and on the root lies dentine, a layer with tiny channels that lead towards the nerve. When dentine is exposed, cold or sweet things can set off the pain.

The condition has a strict definition: pain from exposed dentine that cannot be explained by any other dental disease². So a dentist can call it sensitivity only after ruling out decay, a cracked tooth or a leaking filling, which can feel similar.

Receding gums are common in adults, with both good and poor oral hygiene³, and the exposed root is often linked with sensitivity. Whether brushing too hard causes receding gums is not settled by the evidence⁴. Tooth whitening can also cause sensitivity: in trials of home whitening, it was one of the most common side effects⁵, more so with stronger products, and usually mild and short-lived.

How common is it? Estimates vary widely with who was studied. One review's best estimate is about 1 in 10 people⁶; the average across its studies was about 1 in 3, and single studies ranged from about 1 in 100 to more than 9 in 10.

What you can do right now

• Avoid the trigger. Keep away from very cold or hot food and drink, and from cold air, while the tooth is sore. Scottish dental guidance (SDCEP) also advises avoiding acidic foods and drinks¹.
• Dab on some sensitivity toothpaste. The same guidance suggests putting a small amount on the sensitive area with a finger¹. We found no trial of how quickly this works, but it is a reasonable first step.
• If you take painkillers, swallow them. Follow the pack and do not go over the maximum daily dose. Never hold a tablet against the tooth or gum: SDCEP warns this can damage the tissue⁷. This self-care advice covers 24 hours; if you still need pain relief after that, ask a pharmacist.

That is as far as "immediately" honestly goes. None of the sources we checked shows any toothpaste, treatment or home method stopping sensitivity at once.

What works over days and weeks

Sensitivity toothpastes are the best-studied option. A 2026 review included 93 trials and pooled 47 of them to compare these toothpastes with a regular fluoride toothpaste after 2 weeks of use. Toothpastes with stannous fluoride or arginine reduced sensitivity⁸ to a blast of cold air. The certainty was high for stannous fluoride and low for arginine. The authors call both first-line self-care options and suggest choosing by preference, tolerance and availability, not by expecting one to work better.

Potassium toothpastes can help on some measures, but their evidence is weaker. An older Cochrane review of 6 studies found that potassium nitrate reduced sensitivity to air after 6 to 8 weeks, but it found no clear evidence overall², partly because results depended on how sensitivity was measured.

How soon? One trial, run by a toothpaste manufacturer with 118 people completing it, found that potassium nitrate, stannous fluoride and oxalate toothpastes eased cold-air sensitivity more than a regular toothpaste from day 3 onwards⁹. On a touch test, potassium nitrate was not better at day 3. A single company-run trial cannot settle how fast these products work, and many trials in this field are funded by industry.

In practice: choose a sensitivity toothpaste, brush with it twice a day, and give it a few weeks before you judge it.

Treatments a dentist can offer

If toothpaste is not enough, a dentist can apply a treatment to the sensitive area, such as a fluoride varnish or a dentine bonding agent¹. We found no reliable evidence on how quickly these in-surgery treatments work, or that one is better than the others.

The dentist will also look for the cause. Decay or a leaking filling needs treating in its own right. Where a receding gum has left the root exposed and there is no other problem, experts suggest monitoring the area³; gum surgery may be considered in some cases.

Home remedies: an honest verdict

• Salt water, clove oil, garlic, oil pulling and similar remedies. The sources we checked did not assess them for sensitive teeth, so we cannot recommend them for it. Clove oil's evidence for dental pain comes from products that dentists applied¹⁰, not from home use.
• Acidic "natural" rinses and whitening mixtures. Guidance advises avoiding acidic food and drink for sensitivity, so we advise against lemon or vinegar mixtures.

When to see a dentist

New sensitivity is worth a non-urgent dental visit: SDCEP advises seeing a dentist to rule out other causes¹, such as decay. Book sooner if:

• the pain lingers after the cold or heat has gone, throbs, or starts on its own;
• it is in one tooth, or hurts when you bite;
• you can see a hole, a crack or a broken filling;
• a sensitivity toothpaste has not helped after a few weeks.

Ask for an urgent appointment if your face, cheek or jaw is swollen or you have a high temperature.

See a dentist if toothache lasts more than 2 days or does not go away with painkillers¹¹.

Emergencies. Call 112 or go to the nearest emergency department if you have swelling that makes it hard to breathe, speak or swallow, a swollen or painful eye or sudden problems with your eyesight, swelling in your neck, a lot of swelling inside your mouth¹², or if you find it hard to open your mouth.

Frequently asked questions