The gap between teeth may be caused by receding gums, which can be treated by orthodontic treatment, crown restoration and veneer treatment, which can effectively close its clinical state as follows: 1.Orthodontic treatment: It may be caused by too small teeth and too large bone during growth and development, which can be treated symptomatically by orthodontic treatment and with braces, which can 2.Crown restoration: For individual teeth with large gaps, the possibility of dental caries should be excluded, and timely filling treatment is needed to alleviate the problem. 3.Veneer treatment: If it is caused by incisors, porcelain veneers or resin veneers can be used for restoration, which can effectively avoid the aesthetic problems caused by large gaps, and even the problems of food embedment and tooth displacement. This can avoid the aesthetic problems caused by large gaps and even food ingrowth and tooth displacement. Therefore, the above methods can usually be taken to deal with.