Plaque can cause gum recession, plaque is the initiating factor of periodontal disease, which will lead to chronic inflammation around the gums, alveolar bone resorption and gum recession, which will cause a series of clinical phenomena such as redness, swelling and bleeding of gums, exposure of tooth roots, and gradual loosening of teeth. For patients with gum recession caused by periodontitis, the first task in clinical treatment is to remove plaque and control the amount of plaque in the mouth, and the main treatment methods include ultrasonic scaling, periodontal scaling, periodontal rinsing and medication, and a series of treatment methods. If the plaque is not controlled, then the periodontal disease will become more and more serious, making the gum recession will gradually aggravate, there is also a part of the people’s gum recession is due to localized occlusal trauma, in this case, after lifting the occlusal trauma, the problem of gum recession will stop.