Effectiveness of Calcium Silicate and Sodium Fluoride Nanoparticles in The Management of Dentin Hypersensitivity

group of patients with hypersensitive areas will use the calcium silicate toothpaste twice per day (morning and bedtime) the toothpaste will be applied uniformly using medium toothbrush to the hypersensitive surfaces for 30seconds. After that, the patient will rinse their mouth with plain water. the other group of patients will use the sodium fluoride toothpaste twice per day (morning and bedtime). The toothpaste will be applied uniformly using a medium toothbrush to the hypersensitive areas for 30 seconds after that the patients will rinse their mouth with plain water