What is periodontal disease? Periodontal disease is a chronic, destructive disease that occurs in the supporting tissues of the teeth (gums, periodontium, alveolar bone) and is one of the most common oral diseases. In China, the prevalence is up to 70% or more in adults, and it is the main cause of loss of function of the chewing organ. Self-detection of periodontal disease 1. Blood on the bristles when brushing teeth recently and blood on food when biting objects indicates the beginning of gingivitis. 2.The teeth are not loose, but the gums are red and swollen and bleed when touched, indicating gingivitis. 3.The teeth have different degrees of looseness, weakness in biting, and exposed roots, indicating the development of periodontitis. If these symptoms are not well treated and controlled, it will cause loose and lost teeth, which will directly affect chewing, pronunciation and aesthetics. How to prevent periodontal disease? 1, develop good oral hygiene habits, apply the correct brushing method to effectively brush teeth, and advocate the use of dental floss to remove plaque between teeth. 2, regular oral health examination. It is better to do it once every six months. 3, regular cleaning, every six months to a year to do oral cleaning (commonly known as scaling) to maintain healthy gums and solid teeth, effective prevention of periodontitis. 4, reasonable diet, strengthen physical exercise, improve the body resistance.