Over 30 years ago, dentists recommended Sensodent-K toothpaste. It Prevents dental sensitivity caused by hot and cold drinks, sweets, and juices.
SENSODENT-K toothpaste contains potassium nitrate, which calms the nerves that are stimulated by hot or cold drinks, sweets, or juices. SENSODENT-K supplies the regular doses of potassium nitrate required to sustain its depolarizing activity and gives continued relief and protection from dentinal sensitivity when used regularly. The text also mentions that tooth sensitivity is caused by enamel loss or gingival recession and recommends brushing teeth twice daily with a soft-bristled toothbrush and flossing daily to prevent sensitivity from recurring.