Scholars at home and abroad have carried out a lot of research work on dentin sensitivity, and there are many treatment and prevention methods, such as proper brushing methods, the use of desensitizing toothpaste (for example, we can choose to use the novamin component of the professional restorative toothpaste, which can form a hard restorative layer on the dentin surface and deep into the dentin tubules with its unique novamin component), desensitizers, laser desensitization The application of laser desensitization, etc. In clinical practice, we often provide symptomatic treatment for the cause of the disease, such as making pads in combination with desensitization treatment for patients with bruxism, periodontal basic treatment in combination with desensitization treatment for patients with periodontal disease, reducing the intake of acidic food for patients with acid erosion, and filling restorations for patients with large defects resulting in dentin leakage, etc.