Tooth sensitivity is caused by fluid movement within tubules located in the dentin (tissue layer beneath the hard enamel containing the inner marrow), which leads to nerve stimulation. When hard enamel wears or the gums recede, causing the surface of the tubule to be exposed, eating food or drinking food or hot and cold beverages, touching the teeth or exposing them to cold air can cause pain.
Exposure to tooth areas can cause pain and even affect or change your diet, drinking water and breathing habits. For example, taking a scoop of ice cream as an example may be a painful experience for someone with sensitive teeth. Excessive consumption of acid-containing foods and beverages, such as citrus juices, fruits, and soft drinks, may also put you at risk of tooth sensitivity. Bulimia and acid reflux can also lead to erosion of hard glazes and due to oral acid sensitivity.