People with sensitive teeth may experience pain or discomfort as a response to certain triggers. You may feel 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

Your symptoms may come and go over time for no obvious reason. They may range from mild to intense.

Read more at: https://www.healthline.com/health/sensitive-teeth#Symptoms-of-sensitive-teeth