The flattening of the tip of the first molar may be caused by thin enamel due to bruxism and underdevelopment of the teeth, and can be treated by localized jaw cushions or fillings, crown protection and other methods. Flattened first molar can be treated by localized jaw cushions and fillings. Flattened teeth may cause the teeth to become more sensitive and painful when eating, and localized jaw cushions and fillings can reduce the damage to the teeth, thus relieving the tooth pain. First molar cusp flattening can be protected through the use of crowns, such as porcelain teeth. The first molar teeth are worn down more, and the remaining tooth tissues are thinner and can’t withstand greater chewing forces, so the teeth can be adequately protected through porcelain teeth. Therefore, patients with flattened first molar cusps should go to the hospital as soon as possible for examination and actively cooperate with the doctor for treatment after diagnosis.