Incisors with large gaps for different reasons and different treatment methods, the following are common: 1, the gap appears after growth and development, can be due to the number of teeth or teeth width is not enough, the teeth are thin, such as the width of the teeth is too small, can be veneered or all-porcelain crown repair to adjust the gap; 2, periodontal disease can cause the incisors to fan out forward, scattered after the gap, through the treatment of periodontal disease, inward teeth, reduce the gap; 3, the Patients with large gaps where the number and width of teeth are not a problem, the gap can be closed directly by orthodontic methods; 4. Patients with missing teeth, depending on the patient’s condition, decide whether to close the gap, or retain and adjust the gap in preparation for implant restoration or other restorations.