1, vigilant root surface caries after middle age, due to the periodontium began to be exposed, the hardness of these parts of the crown is lower, poor caries resistance, easy to appear caries, clinically known as root surface caries. One of the characteristics of root surface caries is that the location is hidden, not easy to find, and therefore most easily overlooked. Therefore, middle-aged and elderly people should have regular dental checkups to find cavities early and fill them in early to reduce pain and loss. 2, prevention and treatment of periodontitis Periodontitis is a common disease among middle-aged people, but it is not like dental caries for people to understand and pay attention to. Many people who suffer from periodontitis think that it is “false fire rising, periodontal inflammation, take some medicine will be fine”. Unbeknownst to them, periodontitis is often easy to recur, damaging the health of the periodontium, resulting in loose teeth. Against periodontitis, only by taking medicine can not solve the problem, should do local periodontal treatment, such as periodontal scaling, periodontal rinsing medicine or caries scraping under the caries, flap surgery root treatment. Then with the systemic medication, there will be a satisfactory therapeutic effect. 3, repair missing teeth Some people think that the age, missing a few teeth is normal. Missing teeth and do not want to set dentures, afraid of trouble, missing let it vacant. This is a lot of harm, it will significantly reduce the ability to chew, affecting digestion and nutrient absorption; will accelerate the neighboring teeth loose off; will affect the language and appearance. Dentures can help you eliminate defects, restore dental function. 4, warm water brushing teeth after middle age, due to wear and tear of the tooth surface and periodontal atrophy, dentin exposure, teeth are prone to sensitivities, cold, hot, sour, sweet, feel the teeth sore. This repeated cold and hot stimulation will lead to pulpitis and damage the health of the teeth. Folk have “warm water teeth, cold water surface, hot water feet”. Use warm water to rinse and brush your teeth, avoiding too cold, too hot stimulation, can reduce the occurrence of pulpal inflammation. 5, dental health life is movement, teeth also need to exercise. Three meals a day, although the teeth are also in motion, but as limbs every day in the activities can not be completely replaced by health care campaigns, three meals and chewing action is not enough, the teeth also need their own exercise. The methods are: knocking teeth, daily morning and evening empty mouth, upper and lower teeth repeatedly hit each 200 times; massage gums, in the case of teeth without soft dirt, calculus, inflammation, rinse your mouth with a clean forefinger or thumb gently massage gums, three times a day, preferably after meals, each time up and down 10 or 15 times, you can also turn the tongue massage. 6, the teeth can be cleaned and mashed garlic, add a little water into a paste, on the gums, each time for about 10 minutes, or with spicy fresh radish instead, both sterilization, protection of the dental bed, the prevention of periodontal disease, but also to promote the regeneration of the gums. In addition, it should also be noted that usually less toothpicks picking teeth, the use of strong tea gargle naturally off the residue of food debris in the teeth; pay attention to frequent and thorough cleaning of the teeth, cultivate good habits, do not smoke, regularly ask the doctor to check the teeth; the use of fluoride toothpaste; defecation bite tightly, and so on.