When the degree of wedge-shaped defect of a tooth is deeper and reaches the middle or deep layer of dentin, fillings and root canal treatment can be carried out according to the situation. The hard tissue of the tooth is gradually lost under the long-term effect of mechanical friction, acid erosion and stress concentration, forming two smooth sloping surfaces with a large mouth and a small bottom, which is a wedge-shaped defect. 1. If the wedge-shaped defect is shallow and limited to the enamel or bone, there is no need for special treatment if there are no symptoms of dental hypersensitivity. 2. If the degree of defect is deeper, reaching the middle or deep layer of dentin or accompanied by symptoms of tooth hypersensitivity, filling treatment should be carried out, which is also known as dental filling. 3. If the defect is serious enough to reach the pulp cavity, and there is tooth infection or periapical disease, root canal treatment may be required, followed by crown restoration. It is recommended to go to a specialized hospital in time and follow the doctor’s advice to choose the appropriate treatment. In your daily life, you should pay attention to oral hygiene, maintain good eating habits, brush your teeth correctly, and have regular oral checkups to prevent wedge-shaped defects.