A lymph node (lymphadenic node) is a peripheral organ of the human immune system. It contains lymphocytes and immune memory cells. There are many lymph nodes throughout the body, especially in the upper part of the body, on the neck, arms, legs, lungs, bronchi, and intestines. They never hurt, but if they become enlarged and inflamed, there is a risk of lymphadenitis. The main cause of lymphadenitis is infection. It can enter the lymph node in several ways, most often through the mucous membranes of the respiratory tract. The person himself can bring it there if he didn’t brush his teeth well or ate from someone else’s dishes. The second group of infectious pathogens of lymphadenitis are microorganisms localized in carious teeth. They need to be treated comprehensively. Removing the root of a tooth will only eliminate the source of infection, but the tooth itself continues to be a cause of inflammation in people who have exposed their health to stress. To remove a tooth, and subsequently install properly made dentures, cure caries on them