There are many reasons for large gaps in teeth, some people are born with large gaps, and some are caused by acquired pathological reasons. For the repair of gaps, it is recommended that the decision be based on the cause of the problem. Currently, orthodontics, crowns or braces are the three methods usually used in clinical practice. These three methods can ensure the aesthetic appearance of the teeth. If the gap is relatively large and is caused by congenital dysplasia, it can be treated by orthodontic correction. Orthodontic orthodontic methods are less suitable for use in older patients. For older patients, it is recommended to restore the gap by making porcelain crowns; for younger patients, such as children, it is usually recommended not to repair the gap, which may be reduced after tooth replacement, and if the gap is still large after tooth replacement, orthodontics and all-porcelain teeth are recommended to treat it. If the gap is caused by caries, it is recommended to repair the tooth by filling or crown restoration, and the stability and aesthetics of the tooth can be guaranteed. Usually periodontal disease causes large gaps in the teeth, and the gaps at the roots of the teeth increase due to gum recession. This condition mainly relies on prevention and usually requires timely treatment of periodontal diseases, including periodontitis and these problems. Actively clean the teeth for treatment and remove the calculus. Patients with large gaps in their teeth are advised to take the appropriate treatment plan according to their situation.