A quick twinge after a sip of cold water or an iced drink can happen occasionally. However, sensitivity that returns often, affects one particular tooth, or continues after the cold drink is gone may be worth discussing with a dentist. Tooth sensitivity is a symptom rather than a diagnosis, and several different concerns can create a similar sensation.
Why Cold Drinks May Trigger Sensitivity
Enamel protects the outer surface of each tooth. If enamel becomes worn or the gums recede, the less-protected dentin underneath may become exposed. Cold temperatures can then stimulate the tooth more easily, producing a brief, sharp sensation. Sensitivity may also be associated with tooth decay, a crack, gum changes, or a filling or other restoration that has become worn. Some people also experience temporary sensitivity after teeth whitening or another dental procedure.
When Sensitivity Should Be Checked
Arrange an assessment when sensitivity keeps returning, becomes stronger, lingers after the cold source is removed, or occurs consistently in one tooth. Pain when biting, a visible chip, swelling, a loose restoration, or a change in tooth colour should also be brought to your dentist’s attention. Sudden or significant discomfort may require more prompt care, particularly when it is accompanied by swelling or other signs of infection.
Caring for Sensitive Teeth
Continue brushing gently with a soft-bristled toothbrush and fluoride toothpaste. Toothpaste designed for sensitive teeth may help some people when used consistently, although it will not address every possible cause. Avoid aggressive brushing and frequent exposure to highly acidic drinks, which may contribute to enamel wear. A dental examination can help determine whether the sensitivity is related to exposed dentin, decay, a restoration, or another concern.
The general dentists at Central Dental Group provide preventive and restorative dental care at Yonge and Eglinton in Toronto. If cold drinks regularly trigger discomfort, contact the practice to arrange an assessment and receive guidance based on your individual oral health.

