Tooth wear: why it happens and how to prevent your teeth from deteriorating over time

15/02/2026

Why is it important to have a dental check-up once a year?

21/04/2026

10/03/2026

Tooth sensitivity: the most common causes and how to relieve pain when eating or drinking

The tooth sensitivity It is a very common problem that can cause discomfort when eating or drinking cold, hot, sweet or acidic foods and drinks. Many people experience this brief, sharp pain in one or more teeth without knowing exactly why it happens.

Although in many cases it is not a serious problem, tooth sensitivity can be a sign that something is affecting the enamel or the gums. Understanding its causes and knowing how to deal with it is essential for protecting your oral health.

What is tooth sensitivity?

Tooth sensitivity occurs when the dentine, the inner layer of the tooth, is exposed. This area contains small ducts that connect to the dental nerve, which is why external stimuli can cause pain or discomfort.

Normally, dentine is protected by enamel and the gums. When this protection is reduced, the teeth become more sensitive.

The most common symptoms of tooth sensitivity

People with sensitive teeth often experience discomfort in situations such as:

  • Drinking cold water or hot drinks

  • Eating sweet or acidic foods

  • Brushing your teeth

  • Breathing in cold air

The pain is usually brief and localised, although it may recur frequently if the underlying cause is not treated.

The most common causes of tooth sensitivity

Tooth sensitivity can have various causes. Here are some of the most common ones.

Tooth enamel wear

Enamel protects the teeth from external factors. When it wears away over time, due to bruxism or aggressive brushing, the dentine may become exposed.

Gum recession

When the gums recede, they expose the root of the tooth, which is more sensitive than the crown.

Brushing too hard

Applying too much pressure when brushing or using hard-bristled toothbrushes can damage the enamel and gums.

Frequent consumption of acidic foods

Drinks such as soft drinks, energy drinks and citrus juices can weaken tooth enamel if consumed frequently.

Bruxism

The habit of clenching or grinding your teeth causes tooth wear and can lead to sensitivity.

Recent dental treatments

Following certain dental treatments, such as deep cleanings or teeth whitening, you may experience temporary sensitivity, which usually subsides within a few days.

 

How to relieve tooth sensitivity

There are various measures that can help reduce discomfort and protect your teeth.

Using toothpastes for sensitive teeth

These toothpastes help to block the dentine tubules and reduce the transmission of stimuli to the nerve.

Brush gently

Using a soft-bristled toothbrush and employing the correct brushing technique helps to protect your enamel and gums.

Reduce your intake of acidic foods

Limiting your intake of fizzy drinks, energy drinks and highly acidic foods can help preserve your tooth enamel.

Avoid sudden changes in temperature

Alternating between very cold and very hot foods can increase sensitivity.

Have regular dental check-ups

A professional can identify the exact cause of the sensitivity and recommend the most appropriate treatment.

When to see the dentist

Although tooth sensitivity may be mild, it is advisable to consult a dentist when:

  • The pain occurs frequently

  • Sensitivity increases over time

  • It affects several teeth

  • It interferes with eating or personal hygiene

In some cases, sensitivity may be linked to tooth decay, tooth wear or gum problems that require treatment.

Professional treatments for tooth sensitivity

If the discomfort persists, your dentist may recommend various solutions, such as:

  • Application of desensitising varnishes or gels

  • Treatments to protect tooth enamel

  • Treatment of bruxism using bite splints

  • Periodontal treatments for gum recession

Treatment will always depend on the cause of the sensitivity.

The importance of looking after your tooth enamel

Enamel is the teeth’s main defence against external factors. Maintaining good oral hygiene habits, a balanced diet and regular check-ups helps to keep it in good condition.

At Dentsana Clinic, we assess each case on an individual basis to identify the cause of tooth sensitivity and recommend the most appropriate solutions to protect oral health.

Tooth sensitivity: the most common causes and how to relieve pain when eating or drinking
This website uses cookies to ensure you get the best experience on our site. By continuing to browse our site, you are agreeing to our use of cookies. To find out more about how we use cookies and how you can manage your preferences visit our Privacy policy.
Read more