Veneers can repair large gaps between teeth, but they are more suitable for smaller gaps, and other restorative methods are needed for larger gaps. Large gaps in the teeth and the existence of gaps can be caused by congenital factors such as congenital missing teeth, abnormal tooth morphology, and systemic diseases such as acromegaly, permanent teeth irregularities, periodontal disease and other acquired factors. It should be noted that the gap needs to remove the cause of the disease, and then according to the specific circumstances of the use of orthodontic, restorative and other treatment methods. Veneers can repair small gaps to restore the normal relationship, shape and color of the teeth. For larger gaps, where veneers are difficult to restore the adjacency and the aesthetics and harmony of the teeth may be reduced, full crowns and other restorative methods can be used. When a gap occurs, it is recommended to choose the appropriate treatment plan under the guidance of the dentist.