Sensitive teeth

Cause of sensitive teeth

Sensitive teeth are mainly caused by exposed dentine. If enamel of tooth crown, or gum and cementum on root surface has been worn or lost, then it will lose its protective function and the dentine will be exposed. The dentine has many fine dentinal tubules connecting to the pulp. When it is stimulated by eating or drinking hot, cold, sour, or sweet food and beverages, or when it is contacted by a toothbrush or dental floss, sharp pain will be felt.

Photograph of the longitudinal section of a tooth with exposed dentine.

Causes of exposed dentine



Last revision date: 18 January 2012