Why Cold Sensitivity Happens
Sharp pain when you drink something cold is one of the most common dental complaints. Sensitivity can be mild and occasional, or it can be severe enough to avoid certain foods. The key is figuring out whether it is a surface issue or a deeper problem inside the tooth.
Most Common Causes
The most common causes include enamel wear, exposed root surfaces from gum recession, cavities, cracked teeth, grinding, or recent whitening. Acidic drinks and frequent snacking can thin enamel over time. Aggressive brushing can also wear enamel and expose dentin, which contains tiny channels that lead to the nerve.
What You Can Do at Home
Start with simple changes: use a sensitivity toothpaste, brush with a soft toothbrush, and avoid scrubbing. If you clench or grind, a nightguard can help prevent micro-cracks and enamel wear. Reduce acidic beverages and rinse with water after coffee, tea, soda, or citrus.
When To See a Dentist
If the sensitivity is sudden, affects one tooth, or lingers after the cold is gone, it is important to get checked. That pattern may suggest a cavity, a cracked tooth, or nerve irritation that needs treatment. Dentists can also apply fluoride varnish or bonding in sensitive areas and recommend targeted at-home desensitizers.
