Large incisor gaps are usually caused by dental and surrounding diseases, and the restoration method is individualized and varies according to the patient’s personal situation. Clinically, it is mostly restored through orthodontic treatment and dental veneer treatment: I. Treatment for primary disease: usually large incisor gaps can be caused by periodontal disease or dental caries, which should be actively treated and then restored in appearance. 1. Periodontal disease: patients with periodontitis should actively eliminate the inflammation, and drugs can be used under the guidance of doctors, including metronidazole, amoxicillin, erythromycin, etc. If there is bad chewing habit, it should be self-corrected; 2.Dental caries: commonly known as tooth decay, mostly on the adjacent surface of incisors, it should be actively repaired and filled after removing necrotic material. 2.Restore treatment: 1.Orthodontic treatment: commonly known as wearing braces. Through wearing orthodontic braces, the craniofacial form and function of teeth and jaws can be balanced and coordinated. After the correction of malformation, the performance of the upper and lower dental arches are neatly aligned, the length, width and height of the dental arches are coordinated, the relationship between the dental arches and the jawbone is coordinated, the anterior teeth are covered with normal (teeth together), etc., and the overall appearance of the teeth is beautiful; 2, veneer treatment: dental veneers are mostly used for patients who are unwilling or unable to undergo orthodontic treatment, due to the different materials of veneers, the maintenance time is as short as a few months, or as long as several years. Compared with orthodontic treatment, veneers are convenient and economical to operate, but over time, veneers may be damaged and need to be re-worn. In addition, for children under 12 years of age, if the gap between the incisors becomes larger, it is usually considered to be a misalignment during tooth replacement, and the gap can gradually return to normal when all teeth are replaced. In the case of older patients, the increase in the gap between the teeth is a normal phenomenon that occurs with age, and the symptoms can be improved by veneer treatment.