Sensitivity toothpaste, which contains strontium chloride or potassium nitrate are very effective in treating sensitive teeth. After a few weeks of use, you may notice a decrease in sensitivity. Highly acidic foods such as oranges, grapefruits and lemons, as well as tea and soda can increase tooth sensitivity, and work against sensitivity toothpaste. If you do not get relief by brushing gently and using desensitizing toothpaste, see your dentist. There are special compounds that can be applied in-office to the roots of your tooth to reduce – if not eliminate – the sensitivity. High-fluoride containing home care products can also be recommended to help reduce tooth sensitivity.