The most common symptom of sensitive teeth is pain/discomfort, which can be described as a dull ache, a sharp stinging, or a bruise-like pain. People with sensitive teeth may have a response to certain triggers, possibly feeling this pain at the roots of the affected teeth. The most common triggers include: • Hot foods and beverages • Cold foods and beverages • Cold air • Sweet foods and beverages • Acidic foods and beverages • Cold water, especially during routine dental cleanings • Brushing or flossing teeth • Alcohol-based mouth rinses Symptoms may come and go over time for no obvious reason, and can range from mild to intense.