With the aging of the society, the oral health care of the elderly has become a worldwide issue, “to take care of the days of life” is the beautiful wish of every elderly, to achieve this wish needs good oral health care as a basis. 1995 the second national oral epidemiological survey data show that 65-74 years old, the age group of partially missing teeth is 88.40%, of which 10.51% are edentulous; the rate of caries is 64.75%, caries are 2.49; dental calculus In 1995, the second national oral epidemiological survey data showed that the age group of 65-74 years old partially lost teeth for 88.40%, of which the edentulous jaw is 10.51%; the rate of caries is 64.75%, caries are 2.49; the detection rate of dental calculus is 77.46%; the oral health knowledge of caries knowledge of the correct answer rate is only 0.14%, and the periodontal disease is zero. Many old people think, “teeth good or bad is born, treatment is useless”, “people old teeth is inevitable”, so let it be, the old people often lamented that “the sunset is good, just near the dusk! “. First, the elderly common oral problems plagued by the elderly oral diseases are mainly the following problems: periodontal disease, caries, tooth loss, tooth sensitivity and so on. 1, periodontal disease Periodontal disease is a major oral disease that jeopardizes the health of human teeth and the whole body, and is the primary cause of adult tooth loss. When the inflammation is limited to the gums, it is called gingivitis, which is manifested as bleeding gums. When the lesion develops further, it becomes periodontitis, which forms periodontal pockets, destruction of periodontal membrane, resorption of alveolar bone, and eventually leads to loosening of teeth and loss of teeth. 2, caries caries can cause dental defects, chewing difficulties, it caused by the pain symptoms of the elderly life has been greatly affected, if not treated in a timely manner, will develop into pulpitis or periapical periodontitis, resulting in severe pain, the formation of long-term foci, seriously affecting the oral cavity of the elderly and the health of the whole body. Commonly, the teeth of the elderly are prone to caries in the following areas: the neck of the teeth, adjacent surfaces, edges of fillings, denture abutments. Due to the gingival recession and root exposure in the elderly, caries can easily occur on the root surface, which is called “root surface caries”. Root surface caries develops rapidly and can easily involve dentin, leading to pulpitis and periapical periodontitis. 3.Loss of teeth The main cause of tooth loss in the elderly is periodontal disease, as well as caries, trauma and other reasons can also cause tooth loss. When the teeth are missing, the teeth located on both sides of the gap will be tilted to the gap to move, the opposing teeth will also be elongated, resulting in occlusal disorders, easy to cause food blockage, prone to dental caries or periodontal disease. Loss of teeth will also cause unclear pronunciation and have a certain impact on the temporomandibular joints, which will easily damage the joints, resulting in joint pain, limited mouth opening, joint popping, etc. In addition, teeth are important for maintaining a person’s health, so it is important for the person to be able to maintain his or her health. In addition, the teeth for the maintenance of the human face also plays an important role, when the front teeth are missing, the lower 1/3 of the human face is sunken, nasolabial folds deepen, facial wrinkles increase, appear old. 4, tooth sensitivity dentin allergy is not an independent disease, but a variety of dental diseases common symptoms, where the integrity of the enamel on the surface of the teeth is damaged, dentin exposure of various dental diseases can lead to dentin allergy, such as excessive abrasion of the teeth, sawing brushing caused by wedge-shaped defects, fracture of the dentin, caries, periodontal atrophy to the neck of the teeth exposed, and so on. However, there are some special cases, not all dentin-exposed teeth have symptoms, with the dentin exposed for a longer period of time, the restorative dentin formation, allergy symptoms can be relieved. Individual teeth with intact enamel can also produce sensitivity. 5, wedge-shaped defect The lip 郏 surface of the neck of the teeth is prone to form a kind of surface wide, bottom pointed triangular defect, like a wedge, so it is called wedge-shaped defect, the reason is the long-term use of hard bristles big head toothbrush brush, the structure of the neck of the teeth is weak, low abrasion resistance, the role of the acid, dental tissues for a long time to make fatigue, and so on. Wedge-shaped defects are one of the most important causes of dentin hypersensitivity, and it is necessary to improve the brushing method, avoid horizontal brushing, and use softer toothbrushes and toothpastes with finer abrasives. For the defects that have already appeared, timely repair. Second, oral diseases and the relationship between systemic health 1, vitamin deficiency Vitamin deficiency can lead to oral mucosal tissue lesions, according to the type of deficiency, the degree of deficiency and oral hygiene can occur in a variety of lesions, common stomatitis, lingual inflammation, gingivitis and localized ulcers, atrophy, erosion. 2, diabetes mellitus diabetic oral manifestations of gum color deep red, edema, easy to bleed, gingival margin was granulation tissue-like, easy to periodontal abscess, teeth can be loosened in a short period of time; can be formed in a short period of time a large number of tartar, oral hygiene is good, can be manifested as periodontal atrophy, neck of the tooth is exposed, the neck of the tooth dentin allergy; tongue is deep red, enlarged, the tongue side of the tooth marks, there is a dry and burning sensation, and can occur fissure grooves; thirst and dry mouth, and some patients have a ketone taste of the mouth. The patient’s mouth has ketone flavor (rotten apple flavor); occasional severe toothache, accompanied by pulpitis and pulp necrosis. 3, tooth loss and Alzheimer’s a person every day to eat, need to carry out tens of thousands of times of chewing movement, and this movement through the trigeminal nerve to the brain, as if every day for the brain to do health care campaigns. Foreign studies have shown that the elderly due to tooth loss resulting in partial or total loss of chewing ability, resulting in chewing action on the brain to form a benign stimulus disappeared, so that the elderly prone to Alzheimer’s disease. 4, oral disease and cardiovascular disease produce periodontal inflammation of bacteria in the oral temperature and humidity conditions will produce very strong toxicity, and constantly into the blood circulation system, long time easy to cause heart disease. The United States Stanford University, a recent study confirmed that in the 57-75-year-old population, the loss of teeth up to 10 to 19 people, compared to the loss of teeth less than 9 people, their common carotid artery atherosclerosis rate increased significantly, that is, they are more likely to suffer from cardiovascular diseases such as stroke. Oral health care for the elderly: the basic goal of oral health care for the elderly: at least 20 functional teeth should be maintained to maintain the most basic oral function; or through the minimum repair, as far as possible, the rehabilitation of oral function, to maintain the ability of the elderly to live independently and improve the quality of life of the elderly. 1, improve the ability of self oral health care for the elderly to choose the oral health requirements of the brush head smaller, soft and flexible bristles of the health care toothbrush, choose fluoride toothpaste, adhere to the morning and evening brushing, conditional on the use of interdental brushes, flossing and other interdental cleaning agents. Flossing can be done with a flat or wedge-shaped toothpick, sliding slowly along the two surfaces of each tooth gap, and should not be overly forceful. For the elderly who have serious chronic diseases and have difficulty in taking care of themselves, special oral care should be provided by family members or medical personnel, including brushing, cleaning and flossing. 2.Improve the nutritional status Improve the nutritional status of the elderly, rationalize the diet, maintain good eating habits, strictly limit all kinds of sweets, eat more fresh vegetables and fruits, pay attention to the intake of sufficient VitA, D, B1, B2, C, E. Abstain from smoking and alcohol, avoid eating strong stimulating food. Limit sweets, eat more vegetables and fruits, arrange reasonable meals, and maintain good dietary habits. You should also have regular oral health checkups. Generally every six months, if possible, every three months, every six months to a year cleaning. 3, rehabilitation of basic oral function of the carious teeth for filling and repair, missing teeth for denture repair to reduce the burden of the remaining teeth, rehabilitation of basic oral function. Pay attention to the protection of denture, timely revision and adjustment or replacement of denture. Modern oral preventive medicine has proved that as long as good oral health care, old age is not the law of life, only to maintain good oral health, in order to improve the quality of life. Attention to the quality of life of the elderly is more valuable than simply prolonging life, you should pay attention to oral health care, so that healthy teeth accompany you throughout your life.