To reduce pain and swelling of a toothache, use an ice pack on the outside of your cheek; do not use heat. Avoid very hot, cold, or sweet foods and drinks if they increase your pain.
To reduce sensitivity to heat, cold, or brushing, consider using a toothpaste specifically designed for sensitive teeth. Brush with it regularly or rub a small amount of the paste on the sensitive area with your finger a 2 to 3 times a day. Floss gently between your teeth.