The third national oral health epidemiological survey data show that: the prevalence of periodontal disease among adults in China is as high as 85%, and the periodontal health rate of middle-aged and elderly people is less than 20%, along with the growth of age, the prevalence of periodontal disease has increased sharply, becoming an important killer of oral health. Periodontal disease directly leads to red and swollen gums, bad breath, bleeding, loose teeth, shifting, tilting, chewing weakness and even pain, general discomfort, and eventually leads to tooth loss or forced extraction, as the saying goes, tooth decay will only break a tooth, but periodontal disease will lead to a row of teeth loss. Periodontal disease is easy to be ignored. Early periodontal disease is manifested as gingivitis, gum bleeding, bad breath and calculus formation. Gingivitis progresses deeper, directly destroying the periodontal membrane and alveolar bone, separating the flesh of the teeth from the roots, and by this time it has developed from gingivitis to chronic periodontitis. Chronic periodontitis leads to the destruction and atrophy of the periodontal membrane and alveolar bone, and the speed of its destruction depends mainly on the degree of inflammation and time, the longer the inflammation, the heavier the destruction of the alveolar bone, which will inevitably lead to the loosening of teeth, and if allowed to develop, will lead to tooth loss or extraction as a last resort. The root of the tooth is the root of the tooth, “if the skin does not exist, how will the hair be attached”! Periodontitis can also have a negative impact on your general health. Scientists calculate that a person with moderate chronic periodontal disease has periodontal tissue ulcers that add up to the size of an adult’s hand, which is quite serious. How can periodontitis be treated? Periodontal disease focuses on prevention and early treatment, and a thorough treatment plan is formulated by a periodontist according to the condition. This includes oral hygiene instruction, scaling, root scaling, bite adjustment, fixed loose teeth and other basic treatments. Since the presence of plaque and metabolic products around the teeth causes continuous irritation to the periodontal tissues and causes inflammation, the doctor will use special instruments to remove tartar and tartar to remove the irritants and help the wound to heal. At the same time, depending on the condition, we will decide whether to use systemic medication and whether to do the appropriate periodontal surgery and endodontic treatment. The patient’s cooperation is very important! Periodontal disease treatment should be recognized as a long-term complex necessity that requires close cooperation and lifelong maintenance. It is important to maintain oral hygiene and learn the correct method of brushing: 1. Choose a small-headed soft-bristled toothbrush, point the toothbrush at an angle of 45° to the long axis of the tooth in the direction of the root tip (maxillary teeth upward, mandibular teeth downward), press the gum-tooth junction area, make part of the bristles enter the gingival sulcus, part lay on the gingival margin, and reach into the adjacent space as far as possible, and use gentle pressure to make the bristles in situ for a short distance of horizontal fluttering in the anterior-posterior direction 10 times. The toothbrush moves only about 1 mm during the fluttering, brushing 2 to 3 teeth at a time. When moving the toothbrush to the next group of teeth, pay attention to the overlapping placement. 2, anterior teeth lingual palatal side such as narrow arch can be vertical toothbrush, pressure bristles into the gingival sulcus and adjacent gap about 45 ° angle, against the long axis of the teeth for short tremors. The brushing action of the occlusal surface is to press the bristles tightly on the jaw surface, so that the bristle end is deep into the gap, for the front and back teeth direction of the quiver. 3, brushing time and frequency, in order to ensure that each tooth surface have enough brushing time, each brushing time is not less than 10 minutes. To control plaque and maintain oral hygiene and fresh breath, brush your teeth at least 3 times a day. 4.Clean the gap with dental floss after eating to remove the possible embedded food residue and plaque. 5, regular review is the key. Prevention of periodontal disease: 1, good oral hygiene habits. 2, the correct method of brushing and sufficient time to ensure that the experimental evidence, brushing ten minutes, the dental surface cleaning rate of up to 75%, which is an effective indicator of the prevention of cavity disease. 3, regular dental cleaning and oral health examination, early treatment of disease, prevention before it happens.