Cracked incisors need to be examined by a doctor to understand the severity of the crack and to treat the symptoms, which can be general treatment or root canal treatment. 1. General treatment: If the cracks are not serious and do not affect daily life, treatment is not necessary. It is best not to eat too hard food, keep a light diet and avoid excessive force when brushing. 2. Root canal treatment: If the crack is more serious, you need to consult a doctor in time for examination, you can use braces to repair it, or you can choose to carry out root canal treatment and then crown restoration, so as to avoid aggravation of cracks in the tooth. Usually, it is better not to let the tooth be hit by external force or eat too hard food, so as not to cause damage to the tooth.