Gum recession cannot repair itself. Gum recession is generally divided into physiological recession and pathological recession. Physiological recession refers to the degenerative recession of the gums of the elderly as they age, and there is no way to repair it, but to pay attention to oral hygiene to slow down the recession. Pathological recession is generally caused by the formation of dental calculus due to food ingrowth, long-term smoking, bacterial aggregation, and stimulation of the gums by bad dentures, etc. In this case, the gums should be treated by removing bad dentures, scaling, periodontal correction, or even gum regeneration, but these treatments can only inhibit the gums from continuing to recede and cannot restore the gums to their original state. If you have gum recession, you should go to the dentist in time. Pay attention to oral hygiene, try to use a toothbrush with soft bristles, and rinse your mouth after meals. At the same time, do not eat spicy and hard foods, etc.