In the middle-aged people into the future, there are two types of the disease is the most easy and the obvious: First, the hair, and the other is teeth. The hair on people, young people set off when he was young, and when you step “heaven” of the year, it will bully you so that you, “was the old,” however, in addition to decorative appearance and help metabolic heat conduction, almost no practical function. The tooth is not, the more you are older, the more need for strong teeth-teeth. But in real life, there are some errors in the concept is a confused elderly friends. Mistakes one: the elderly teeth loose shedding is a natural phenomenon and also prevent unwanted, is also no good governance .In fact, a host of facts have proven that the majority of elderly people’s teeth loose shedding is due to “gum disease”, “root caries”, osteoporosis and other diseases caused by, as long as these are the prevention and treatment of disease, and longevity of the elderly can keep A healthy teeth, loss of life would be at least postponed. Mistakes 2: human teeth with rat tooth, the more solid the more grinding, chew on hard things, okay .In fact, the teeth and mouse’s teeth were very different, the rodent teeth grow too fast and if it does not wear short of the teeth, dental unlimited long, it Chi Bule things, will be starved to death; But different people , The teeth slower growth, in particular the tooth enamel, the outer package is limited, excessive wear will be destroyed by the enemy; enamel damage, exposed deep dentin, pulp lose the protection of nerve endings, not only Yizhi dentin hypersensitivity ( Inverted teeth), will trigger serious dental caries; tooth wear, will not only cause tooth Lianxing change or shift forward, in the old, also cause ear of the TMJ of long-term pain caused by improper bite. The elderly people’s teeth should, in particular to avoid wear and tear. Do not betel nut chewing, eating sugar cane, Ke hazelnut, melon seeds, eating fried peanuts, can not be used more teeth open caps, Needle, bite nails, etc., when the teeth with pliers; even toothbrush hair can not be too hard to prevent tooth wear. Mistakes three: do not brush their teeth only mouthwash, which is passed down the family .Many old has not brushing habits, especially in rural areas see more of the elderly. They said that for generations is the case, as long as the meal Shu mouthwash on the line, so why use brushes to get chaotic. Even more absurd theory that “more teeth is that the tick dilute, the more the more brittle brush”, so he still refuses to accept modern oral hygiene habits. In fact, mouthwash no substitute for brushing teeth. The correct brushing both the mechanical brushing toothbrush, toothpaste have chemical decontamination and disinfection of sterilization. To be effective in preventing the formation of plaque and calculus. In fact, the elderly should develop brushing habits. Mistakes four: As long as adhere to brush their teeth, there is no need to “Xiya” .In fact, the brush can not completely replace the Xiya, because eating all kinds of food left in the tooth surface traces, formed by bacterial plaque alone, a day early