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What usually causes a sharp twinge when drinking something cold, and is it something to worry about?
A brief, sharp twinge with cold drinks or air is often called dentin sensitivity. It happens when the softer layer under the enamel is exposed, letting temperature changes reach the nerve more easily.
Common causes include:
- Gum recession exposing root surfaces
- Enamel worn by grinding, hard brushing or acidic foods and drinks
- A cavity, cracked tooth or worn filling
- Temporary sensitivity after a cleaning, whitening or new filling
Things people often discuss with their dentist: toothpaste for sensitive teeth, a soft brush with gentle technique, fluoride treatments, and a night guard if grinding is suspected.
Book a visit if the pain lingers for more than a few seconds after the cold is gone, wakes you up, happens with biting, or is in one specific tooth. These can point to a problem that needs treatment. Throbbing pain with swelling or fever is more urgent — see our dental emergency checker.
Unfamiliar words like “dentin,” “recession” or “bruxism”? Check the dental glossary.
General education only, not a diagnosis or treatment advice. Please see a licensed dentist about your own situation. For a medical emergency (trouble breathing or swallowing, heavy bleeding, a major injury or rapidly spreading swelling), call 911 or go to the nearest ER.
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