EVERYDAY SCIENCE

Detailed explanation-1: -Teeth roots, which aren’t covered by hard enamel, contain thousands of tiny tubules leading to your tooth’s center (the pulp). These dentinal tubules (or channels) allow stimuli-for example, hot, cold or sweet food-to reach the nerve in your tooth, which results in the pain you feel.

Detailed explanation-2: -Tooth sensitivity triggered by heat or cold tends to occur when a tooth’s outer protective layer, the enamel, has worn down. Enamel covers the parts of a tooth above the gums. A loss of enamel can expose the sensitive dentin of the tooth, the layer below the enamel that allows heat and cold to stimulate nerves.

Detailed explanation-3: -If a tooth is highly sensitive for more than three or four days and reacts to both hot and cold temperatures, it’s time to visit your dentist. Sensitivity may be a sign of a cavity or infected tooth pulp.

Detailed explanation-4: -Temperature Sensitivity A new sensitivity to hot or cold temperatures, though, may be the only signal that a tooth needs a root canal. Some people experience only minor discomfort, while others have severe pain when biting into a hot pizza or drinking a glass of iced tea.

Detailed explanation-5: -Cold-sensitive teeth occur when the nerves within the tooth are exposed due to receding gums or worn tooth enamel.