Worn teeth with yellow cores may be due to severe wear and tear, resulting in exposure of dentin, which needs to be minimized as soon as possible before considering fillings, such as resin fillings, full crowns, and so on. 1. Reduce the degree of wear and tear: You need to change your bad habits as soon as possible, avoid eating hard food frequently; you should also quit chewing on one side of the mouth as soon as possible, as well as the habit of clenching your teeth, as these factors may further aggravate the degree of wear and tear of the teeth. 2. Dental fillings: (1) Resin fillings: mainly use resin as filling material to fill in the missing part of the tooth; if there are symptoms of pulpitis and apical periapical inflammation, root canal treatment is required before resin fillings are carried out. (2) Full Crown Restoration: It is a kind of fixed denture restoration, suitable for patients with more serious tooth loss, mainly utilizing full crown restoration to repair the affected teeth. If the teeth are severely worn and can not be retained, the teeth can be directly extracted, and then do dental implants, the specific circumstances of the individual to decide, should be carried out under the guidance of a professional physician.