Enamel destruction as a cause of tooth sensitivity    Have you ever felt a sudden pain or discomfort when eating ice cream or drinking a hot drink? You are certainly not alone. Tooth sensitivity is a pain or discomfort that occurs in the teeth in response to specific stimuli such as hot or cold. By changing your oral hygiene habits, this sensitivity is easily treated.    Some of us have more sensitive teeth due to thinner enamel. Enamel (enamel) is the outer layer of the tooth and has a protective role. When enamel is destroyed, tooth sensitivity occurs.