DENTAL CONCERN

Sensitive Teeth

Also called: sensitive teeth, tooth sensitivity, teeth hurt with cold

Sensitive teeth can cause a sudden, sharp sensation when exposed to hot, cold, sweet or acidic foods and drinks. Sensitivity may affect one tooth or several teeth and can range from occasional mild discomfort to frequent pain that interferes with eating and drinking.

TYPICALLY OCCURS

Enamel wear, gum recession, decay and exposed dentine

TREATED BY

Dental restoration, gum treatment and desensitising care

ALSO LINKED TO

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Why it happens?

Tooth sensitivity commonly develops when dentine, the layer beneath the protective enamel, becomes exposed. Dentine contains thousands of microscopic channels that connect towards the sensitive inner part of the tooth. When these channels are exposed to cold air, temperature changes, sweet or acidic substances, they can stimulate the nerves inside the tooth and produce the characteristic short, sharp sensation associated with sensitive teeth.

Dentine can become exposed in several ways. Enamel may gradually wear or erode because of frequent exposure to acidic foods and drinks, acid reflux, aggressive brushing or tooth grinding. Gum recession can also expose the root surfaces of teeth, which are not protected by the same thick enamel covering as the crowns. Gum disease, brushing technique, tooth position and natural changes in the gums can all contribute to recession and increased sensitivity.

Sensitivity does not always result from general enamel wear or exposed roots. Tooth decay, cracked or damaged teeth, worn fillings and other dental problems can produce similar symptoms, particularly when sensitivity is limited to one tooth. Temporary sensitivity can also occur following certain dental procedures. Because several conditions can cause pain in response to temperature or pressure, persistent, worsening or localised sensitivity should be professionally assessed rather than automatically assumed to be ordinary sensitive teeth.

How far along is it?

Early

Brief discomfort occurs occasionally with very cold, hot, sweet or acidic foods and drinks and disappears quickly after the trigger is removed.

Moderate

Sensitivity occurs more regularly and with a wider range of triggers. Everyday activities such as drinking cold water, eating or brushing may become uncomfortable.

Advanced

Pain becomes stronger, lasts longer or occurs without an obvious trigger. This may suggest more significant enamel loss, gum recession or another dental problem requiring assessment.

What addresses it?

Treatments that address this

Root canal treatment→Tooth filling→Dental crowns→

Occasional mild sensitivity may be manageable, but recurring symptoms are worth discussing with a dentist, particularly if they are becoming more frequent or affecting what you can comfortably eat and drink. Identifying the cause is important because sensitivity itself is a symptom rather than a single dental condition.

Seek dental advice if sensitivity suddenly develops in one tooth, becomes severe, persists after the hot or cold stimulus has been removed, or is accompanied by pain when biting, swelling, visible damage or toothache. These symptoms can indicate decay, a crack, infection or another problem requiring treatment.

Quick Questions:

Why have my teeth suddenly become sensitive?

Sudden sensitivity can result from exposed dentine, enamel erosion or gum recession, but it can also be associated with decay, a cracked tooth, a damaged filling or recent dental treatment. New sensitivity affecting one particular tooth should be assessed.

Why are my teeth sensitive to cold?

Cold can stimulate microscopic channels within exposed dentine, transmitting the sensation towards the nerve inside the tooth. Enamel wear and exposed tooth roots are common reasons this occurs.

Can sensitive teeth get worse over time?

They can if the underlying cause continues. For example, ongoing enamel erosion, gum recession, tooth grinding or untreated decay may make sensitivity increasingly noticeable.

Does tooth sensitivity mean I have a cavity?

Not necessarily. Sensitivity has many possible causes, including enamel wear, gum recession and exposed dentine. However, tooth decay can also cause sensitivity, particularly when symptoms affect one tooth or are becoming progressively worse.