There is a gap between the teeth multiple teeth can be corrected, single teeth with large gaps can be crown repair, periodontitis caused by large gaps in the teeth, the need for periodontal treatment. 1. Multiple teeth in the teeth gap between teeth can be closed by orthodontic methods to close the gap, bracket fixed orthodontic appliances have the best effect, short time, fast results. It is necessary to wear a retainer with the end of orthodontic treatment. 2. Single tooth or 2~3 teeth gap is big, can be through the veneer or crown restoration to close the gap, the disadvantage is that there is damage to the teeth, the advantage is aesthetic, short time can improve the gap problem. 3. When periodontitis leads to large gaps in the teeth, gum recession and alveolar bone resorption are usually seen seriously, it is recommended to carry out periodontal treatment first, and it is not recommended to close the gap by means of restorative or orthopedic means, due to periodontitis on the alveolar bone and gums is irreversible, the alveolar bone and the gums are difficult to repair, it is recommended to treat conservatively, and to maintain a good oral hygiene can be. It is recommended to consult with your doctor and choose a suitable restoration according to the doctor’s advice.