One, hidden cracks in the teeth. Hidden cracks, also known as microfractures, are usually tiny cracks (lines) on the surface of the tooth that are not easy to detect with the naked eye. If the crack is close to the pulp, it can cause toothache. They are more common and often overlooked, leading to dental disease. Occult fissures are most common in middle-aged and elderly people, as well as in permanent molars and bicuspids that have been treated. In daily life, it is more common in people who like to bite bones and hard foods. It is generally believed that occult cracked teeth are often associated with trauma, trauma (sports), restorative surgery, and so on. Teeth with hidden cracks are sensitive to temperature and chemical stimuli, especially to cold stimuli. When chewing, occlusal discomfort and dull pain. Cryptic fissure reaches the root surface and root tip, which can cause periodontal pockets and periodontal infection. Treatment: 1. Reduce the occlusion, reduce the joint force during orthodontics and lateral synergism, in order to reduce the pain and prevent the development of occult fissure, resulting in fracture or splitting. 2. Restorative treatment: Repair the cusp and protect the cusp with full crown or inlay restoration. Pay attention to the shape of the surface and occlusal relationship. 3. After root canal treatment, full crowns can be used for restoration. Pay attention to the root canal filling should not be too much force; should not be used with the pile of the restoration.

2. Dentin hypersensitivity. Mostly seen in middle-aged men and women patients, it refers to the exposed dentin to temperature, chemical, mechanical stimuli produce sensitivity, the performance of the tooth soreness-based sensation. This is a signal, when the teeth appear sore, so that people realize that the teeth have a disease, should go to the hospital for examination and treatment. If the degree of tooth sensitivity is too high, lesions will occur. Treatment: 1. local rubbing desensitizing drugs, the efficacy often varies from person to person. 2. the drug desensitization is ineffective and wear and tear close to the pulp of the person, can consider endodontic treatment, and make a full crown restoration.

Zhengzhou Sen De wishes you good health!