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Tooth Sensitivity: Why do Teeth Hurt?


It’s like a pinprick, a sudden cramp when having ice cream or an icy drink. Likewise, tooth sensitivity is an alteration that affects the teeth when their nerves are “in the open” for some reason.

It causes discomfort in the mouth, but it can also affect the quality of life since it limits what you can or can not eat for fear of it happening to you.

And it doesn’t just happen with cold: something very hot or very acidic also triggers it. So it would help if you went to a specialist at the first sign since it has to be treated to prevent it from going overboard.


Severe tooth pain occurs when you contact certain foods or drinks, known as tooth sensitivity. It is a temporary but widespread annoyance.

This unpleasant annoyance is “born” just below the tooth’s enamel, in the dentin, a tiny, porous tissue in which thousands of microscopic tubes are found that pass through it and contain the ends of the nerves.

50% of people suffer from tooth sensitivity, and only 5% consult it

If the enamel is removed, this tooth’s part is exposed, and therefore, the nerves are more vulnerable to heat and cold. When someone begins to lose enamel, they do not suffer any pain and are not aware of the consequences that this can bring.

According to a large study carried out by the University of Bristol (United Kingdom), up to 50% of the population has had tooth sensitivity, but only 5-10% go to the dentist.

But you have to pay attention to the problem and analyze what is causing those nerves to be exposed.


Bad habits in terms of oral hygiene (incredibly incorrect brushing )

  • can expose the dentin of the teeth.
  • Unprotected dentin exposes nerves.

Although there may be a periodontal disease behind this situation, such as having receding gums or bruxism (that gesture of “grinding” the teeth that generally occurs unconsciously while we sleep).


Oral hygiene properly is the key to avoiding the pain of sensitive teeth. What’s more…

  • Check how you brush your teeth. Aggressive brushing with an improper brush (stiff bristles) or with an incorrect technique (horizontal and movements excessive force ) or the use of highly abrasive toothpaste for long periods can cause a loss of gum so that the dentin will be exposed.
  • What you eat affects. We must not forget the importance of diet control, eliminating or reducing as much as possible the intake of acids that, by softening the exposed dentin, worsen and perpetuate the problem of sensitivity.


If you are going to undergo such a treatment, you should take some precautions.

It is expected that after doing it, tooth sensitivity arises to a greater or lesser extent, although it is a temporary annoyance.

This treatment causes a slight demineralization of the tooth neck since it requires the dentin tubules to be opened. Bleaching agents (hydrogen peroxide, carbamide peroxide) penetrate the tooth enamel, which can irritate the nerve.

The whitening toothpaste used long term may cause the same effect. Get advice from a professional before using a specific toothpaste or mouthwash daily as its components, instead of benefiting you, could harm your teeth.