Ninety-three trials and more than 9,500 participants sit behind the most recent answer to this question. A 2026 network meta-analysis in Periodontology 2000 compared self-applied toothpastes for dentine hypersensitivity and concluded that stannous fluoride and arginine formulas should be the first things to try. So when you stand in front of the shelf, the ingredient list tells you more than the brand or the word "sensitive" on the front.
Stannous fluoride and arginine lead the current evidence
The review, led by Gormley and published in 2026, measured results after two weeks of use. Compared with an ordinary fluoride toothpaste, stannous fluoride gave the clearest reduction in sensitivity to a puff of cold air, with high confidence in that finding. Arginine produced a similar sized effect, though the authors were less certain about it. Other formulas showed small to moderate benefits with generally low certainty.
The authors suggested that the choice between stannous fluoride and arginine can come down to taste, tolerance and what is available, rather than an expectation that one will clearly outperform the other. That is useful in practice. If one paste leaves an odd taste or you simply do not like it, switching to the other main option is reasonable.
Where potassium nitrate fits
Potassium nitrate is a long-standing ingredient in sensitive toothpastes and is still widely sold. Earlier reviews supported it; a 2015 meta-analysis by Bae and colleagues in the Journal of Clinical Periodontology found enough evidence for potassium-containing pastes as well as stannous fluoride, arginine and calcium sodium phosphosilicate. In the 2026 comparison it sat among the formulas with smaller effects and lower certainty. It remains a sensible option if it already works for you, but it is no longer the obvious first pick.
Giving a toothpaste a fair trial
Use the paste twice a day in place of your usual one, with a soft brush and gentle pressure. Spit out the excess rather than rinsing hard with water, so more of the active ingredient stays on the teeth. Because the trial results above were measured at two weeks, it makes sense to give a new toothpaste at least that long before judging it. Most of these pastes also contain fluoride, so they can replace your regular toothpaste rather than be used alongside it. Our guide to brushing properly covers technique in more detail.
Habits that keep dentine exposed
Sensitivity usually means dentine, the layer under enamel, is open to the mouth through gum recession or wear. A desensitising paste works better when the cause is not being renewed every day.
How you drink may matter more than how often. A 2017 study by O'Toole and Bartlett in the Journal of Dentistry found that people with sensitive teeth were more likely to sip, swish or hold drinks in the mouth before swallowing, and to spend ten minutes or more eating fruit at a sitting. How often people had acidic food and drink was not linked to sensitivity in that study, which suggests contact time between acid and teeth is the thing to watch. Finishing an acidic drink rather than sipping it over a long period is one way to cut that contact time.
The same study pointed to toothpaste abrasiveness and brush stiffness as possible factors. Strongly abrasive whitening pastes are a poor match for sensitive teeth, and our guide to whitening with sensitive teeth explains gentler ways to brighten. Gum recession is another common route to exposed dentine, covered in our gum recession guide.
One sore tooth is a different problem
Desensitising toothpaste is meant for a general, short, sharp twinge that may affect several teeth. It is the wrong tool for a single tooth that has suddenly become very sensitive, aches after the trigger has gone, hurts when you bite or reacts to heat. Those signs can point to decay, a cracked tooth, a leaking filling or an inflamed nerve, and covering them with a sensitive toothpaste may delay treatment. Our article on why teeth hurt when you eat sweets looks at some of these warning signs, and our guide to the causes and treatment of sensitive teeth covers in-chair options when toothpaste is not enough.
Questions we are often asked
Is it fine to use a sensitive toothpaste long term?
Yes, these pastes are made for daily use and most contain fluoride. Many people stay on one indefinitely.
My sensitivity came back after I stopped. Why?
The paste manages the symptom while the dentine is still exposed. If you stop, the protection fades, so most people who benefit keep using it.
Should I see a dentist before trying one?
For mild, widespread sensitivity, trying a toothpaste first is reasonable. For pain in one tooth, pain that lingers, or sensitivity that is still there after a few weeks of consistent use, book a check with a dentist or OHT.
When to book in
If sensitivity is sharp, getting worse or centred on one tooth, an examination is the quickest way to find the cause. You can see appointment options on our offers page. This article is general information and not a substitute for advice from your dentist.
