Sensitive teeth: the causes we see most in the Tricity

That sudden, sharp pain when you drink something cold or eat something sweet can be surprisingly uncomfortable. For some people, it happens occasionally. For others, almost every cold drink becomes something to approach with caution.

Tooth sensitivity is usually a sign that the more protected inner parts of the tooth have become exposed or are reacting more strongly to temperature, pressure or certain foods.

The important thing is that sensitivity is a symptom, not a diagnosis. The cause matters—and it is often treatable.

The causes we see most often

1. Enamel wear

Enamel is the hard outer layer that protects your teeth. Once it becomes thinner, the layers underneath can become more exposed, making the tooth more sensitive.

One common reason is brushing too aggressively. Using a hard-bristled toothbrush or putting too much pressure on the teeth can gradually contribute to enamel wear.

Acidic foods and drinks can also soften enamel over time. Frequent consumption of fizzy drinks, citrus-based drinks and other acidic foods can therefore contribute to sensitivity.

2. Gum recession

Your gums help protect the roots of your teeth. When gums recede, part of the tooth root can become exposed.

Unlike the crown of the tooth, the root does not have the same protective enamel covering. This can make exposed areas particularly sensitive to cold, heat and touch.

Gum recession can be associated with gum disease, brushing too hard, ageing and other factors. If you notice that your teeth appear longer than they used to or sensitivity is concentrated near the gumline, it is worth having your gums checked.

3. Tooth decay

Not every sensitive tooth is simply a "sensitive tooth."

A cavity can cause sensitivity, particularly when you eat something sweet or drink something hot or cold. As decay progresses deeper into the tooth, the discomfort may become more noticeable.

This is one reason we recommend getting persistent or newly developing sensitivity assessed rather than treating it indefinitely with a desensitising toothpaste.

4. Cracked or damaged teeth

A small crack in a tooth can sometimes cause a very specific type of sensitivity.

You may notice a sharp sensation when biting down, releasing your bite, or eating something particularly cold. Cracks are not always obvious when you look in the mirror, so unexplained sensitivity in one particular tooth deserves attention.

5. Teeth grinding and clenching

Some people grind or clench their teeth without realising it, particularly during sleep or periods of stress.

Over time, this can contribute to wear, small cracks and increased sensitivity. If you also wake up with jaw discomfort, headaches or tired-feeling jaw muscles, mention this during your dental appointment.