Have you ever wondered why you have teeth sensitive to cold? The biological reason behind teeth sensitivity to cold starts in the pulp of the tooth. The nerves in the pulp make teeth sensitive to cold when tooth roots become exposed due to receding gums or gum disease. Pathways called dentinal tubules are filled with fluid, and when a stimulus like cold air or cold liquid is applied to the exposed dentinal tubules, the fluid in the tubules moves and this triggers a pain sensation in the nerve. Over time, tiny cracks can develop as your teeth expand and contract with exposure to hot and cold temperatures. The cracks provide another pathway to the nerves, making the teeth sensitive to cold. (1), (2)
What Else Can Make Teeth Sensitive to Cold?
Other factors that can make teeth sensitive to cold include tooth decay or tooth damage, a recent dental procedure, or use of tooth-whitening products. (1)
What to Do For Teeth Sensitive to Cold
If you have teeth sensitive to cold, try to avoid biting into very cold foods—for example, lick your ice cream instead of biting into it. In addition, if you have teeth sensitive to cold, be sure to use a toothbrush with soft bristles. A soft-bristled brush can help reduce the gum irritation that may make teeth sensitive. Try using soft dental floss, too. (1)