What to do for sensitive teeth? How to choose the right toothpaste

A sip of cold water, hot coffee, or a sour piece of fruit, and suddenly a short, sharp toothache strikes.

This is a typical picture of dentin hypersensitivity – one of the most common reasons why consumers start looking for a specialized toothpaste.

The problem is that "toothpaste for sensitive teeth" does not refer to one specific technology. Individual products use very different active ingredients.

Where does hypersensitivity come from?

Dentin is located beneath the enamel and root cementum. It contains a very large number of microscopic tubules leading toward the tooth pulp.

When dentin becomes exposed, thermal, mechanical, or chemical stimuli can cause a characteristic short pain.

Dentin exposure can occur, among other reasons, due to gum recession or the loss of hard tooth tissue.

Important: similar pain can also be a symptom of decay, a cracked tooth, or a problem with a filling. Therefore, new, severe, or persistent pain should not be automatically treated as "just sensitivity."

How do sensitivity toothpastes work?

In simplified terms, two approaches are used:

reducing nerve excitability

or

limiting fluid flow in the dentinal tubules by partially sealing them.

That is why it is worth looking at the product's composition, and not just the label "Sensitive."

Which ingredients should you look for?

Hydroxyapatite

Hydroxyapatite particles can deposit on the dentin surface and within open tubules.

Meta-analyses of clinical studies indicate that products containing hydroxyapatite can reduce ailments associated with dentin hypersensitivity.

Stannous fluoride

Stannous fluoride is another ingredient used in specialized toothpastes.

Reviews of studies have demonstrated a hypersensitivity-reducing effect for a range of ingredients, including stannous fluoride.

Potassium salts

Toothpastes using potassium compounds are among the classic products intended for sensitive teeth.

Clinical evidence indicates that this group of ingredients can also alleviate hypersensitivity.

Arginine and calcium sodium phosphosilicate

Studies have also evaluated, among others, arginine and bioactive glass known as calcium sodium phosphosilicate.

Meta-analyses have shown beneficial effects for these technologies as well.

Is there one best ingredient?

No.

Studies on hypersensitivity are difficult to compare directly because they vary in observation length, methods of stimulating pain, and the composition of specific toothpastes.

The most important practical conclusion is simpler:

look for a toothpaste containing an active ingredient with documented efficacy, rather than a product that merely uses the "Sensitive" label.

How to use a sensitivity toothpaste?

Desensitizing toothpastes should not be treated like a one-time painkiller.

The effect of many products develops with regular use.

The foundation remains brushing twice a day with the proper technique. The ADA indicates that brushing for two minutes twice a day is a basic element of home oral care.

When is a dentist needed?

Schedule an appointment especially if:

• the pain appeared suddenly,
• it concerns one specific tooth,
• it persists after the stimulus has stopped,
• it appears spontaneously,
• it wakes you up at night,
• it intensifies despite using a sensitivity toothpaste.

In such cases, other causes of pain must be ruled out.

So what should you choose?

A good sensitivity toothpaste should be selected based on the active substance and the cause of the problem, not just the brand.

Hydroxyapatite, stannous fluoride, potassium salts, arginine, and certain calcium-phosphate compounds have clinical data confirming their use in hypersensitivity.

However, if the sensitivity is significant or has appeared recently, the first step should be a dental diagnosis.