Teeth have a little gap gum recession may be caused by physiological reasons, may also be improper brushing, periodontitis and other reasons. Different treatments can be taken according to the different causes, such as physiological causes do not need special treatment. Pathologic causes can take general treatment, subgingival scraping, veneer repair, orthodontic treatment and so on. 1. Physiological reasons: with age, the gums will gradually shrink, the gap between the teeth will become larger, this situation does not need special treatment, maintain good oral hygiene. 2. Improper brushing: If the brushing tools are not suitable, such as hard bristles, rough toothpaste, excessive force will lead to gum recession, teeth gap, it is recommended to replace the brushing tools in time, change the brushing habits, improve the bad restorations, adjust the bite and orthodontic force. 3. Periodontitis: When periodontitis, dental calculus will compress the gums and lead to gum recession, you can choose supragingival cleaning, subgingival scraping, so that the recession of the gums gradually return to normal. If the gap between the teeth is large, you can choose veneer repair; if the teeth shift due to gum recession, orthodontic treatment can be used to improve the distance between the teeth, so that the teeth shift recovery. The symptoms of gum recession with gaps in the teeth, after excluding physiological factors, should be timely consultation, so as not to delay the condition.