Many people think that "aging" is a natural law, and it seems that it is normal for people to lose their teeth when they are old. But in fact, many times the tooth loss is not because of "old", but because...
10-27
According to the results of a sampling survey of oral health epidemiology conducted in Beijing in 2010, the prevalence of caries in middle-aged people in Beijing reached 65.9%, and the prevalence of gingivitis reached 58.7%....
10-27
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