What can cause pain in tooth when drinking liquids?

Thermal sensitivity: Your teeth may have some enamel fracture lines or you may have gum recession and root exposure and erosion. So cold, heat, and even sweets can then penetrate to the inner nerve. Your dentist can suggest some products to reduce penetration and calm a hyper nerve. If the tooth has fractures, you may need a crown or onlay to solve.

Different things: There are several causes for pain when drinking liquids. These include dental cavities, gum recession, cracked/chipped teeth, heavy/unbalanced bite, or grinding/clenching. See your dentist to explore the cause(s) of your sensitivity and find a good solution.

Sensitive: Sensitivity in teeth when drinking cold liquids could be from decay or recession of the gums where your roots are expose, visit your dentist for an evaluation.

Multiple causes: This happened to me before i was a dentist. Most common is root sensitivity, but could also be caries. Have a dentist check this.

Several things: Is this in a single tooth or all your teeth? If its all teeth, then large pulp chambers, gum recession, etc can be the cause. If its a single tooth, it could be a sign of tooth decay, or a crack etc.Causing the nerve to be inflamed. If the pain lingers after drinking, a root canal may be needed.