Large gaps in teeth are common in the following cases: 1, the gap becomes larger after tooth replacement, due to the number of teeth becomes less or the width of the tooth body becomes smaller; 2, when the teeth are arranged neatly without gaps when young, the occurrence of periodontal disease and other conditions, the gap between the teeth is easy to form, and more and more large, more middle-aged and elderly patients have such problems, with the age of the gap is getting larger and larger, through periodontal treatment and orthodontics to solve the problem; 3, congenital gap larger patients, through orthodontic methods to close the gap, the width of the teeth is too small, can be adjusted through the gap, as well as by increasing the teeth such as veneers or full porcelain crown method to restore the normal tooth size to solve the problem.