The common causes of delayed emergence of teeth on both sides of the upper incisors include malnutrition, retained milk teeth, supernumerary teeth, missing teeth, etc. General treatment, medication and surgical treatment should be given according to the causes of the disease. 1. Malnutrition: If the body has anemia, a large lack of other vitamins and trace elements, etc., it will also lead to the delay of the teeth on both sides of the upper incisors. 2. Stagnant milk teeth: due to the caries of milk teeth and other reasons, causing premature loss of milk teeth, milk teeth root stagnation, may affect the eruption of permanent teeth, need to remove milk teeth in time, if the formation of gingival fibrosis, you can carry out local anaesthesia, incision to help the emergence of treatment. 3. Multiple teeth: there are corresponding multiple teeth on both sides of the incisors, occupying the position of the normal teeth, which will lead to the delay of the teeth on both sides of the upper incisors. It is necessary to remove the supernumerary teeth in time for treatment. 4. Missing teeth: congenital developmental factors or due to the destruction of permanent tooth embryo will cause missing teeth, need to make gap retainers, adult denture repair. The teeth on both sides of the upper incisors are delayed, it is recommended to go to the hospital for examination to clarify the cause first.