Older diabetics are accompanied by varying degrees of gingivitis and periodontitis. When these toxins enter the bloodstream, they cause the islet receptors on the surface of the body’s cells to become insensitive, meaning that the insulin in the bloodstream does not work as well on the cells, eventually leading to an increase in blood sugar. Diabetes can often lead to dystrophic lesions in a variety of organs, and in the mouth diabetic gingivitis and periodontitis can occur. The gums are dark red, swollen, bleed easily or exfoliate, and even periodontal abscesses occur, and they often recur; tartar can form rapidly in a short period of time, and periodontal tissue is damaged due to the deposition of calculus, and periodontal pockets are quickly formed. This makes it easy for food debris to be embedded in the periodontal pockets, which is conducive to microbial growth and aggravates the destruction of periodontal tissues; due to the fear of gum bleeding when brushing, the quality of brushing decreases, and teeth can soon appear loose, weak and a series of symptoms. In addition, diabetic patients are less effective in periodontal treatment due to their decreased immunity. When diabetic patients have oral inflammation, especially with septic inflammation, blood sugar tends to be elevated and is more difficult to control within the normal range. Therefore, if blood sugar is not well controlled, it is worthwhile to check the oral cavity to eliminate inflammation of the gums and periodontium. Dental cleaning (scaling) is usually performed every six months to effectively remove harmful bacteria from the mouth.