At the beginning of gum recession, you will feel that your teeth have become longer, the gap between your teeth has increased, the most obvious feeling is that you feel that you have more problems with congestion, and that when you brush your teeth, your sensitivity to hot and cold is increased, especially when you brush your teeth with cold water, and you feel that your teeth ache. Some people with protruding teeth may feel that their teeth are protruding even more after gum recession. The fundamental reason for gum recession is because natural teeth grow in the alveolar bone, the alveolar bone has resorption, the gums will be in the original height of the decline, manifested in oral gum recession. Most of the patients with gum recession are suffering from periodontal disease, if accompanied by symptoms of bleeding gums, the need for timely treatment of periodontitis.