口腔是呼吸道和消化道入口的大门,含有大量的致病菌,经常保持口腔清洁,对预防口腔和全身疾病有重要作用。刷牙是口腔保健的重要措施,其目的是清除口腔细菌、食物残渣、牙垢、牙石、牙面色素斑。刷牙习惯应为早晚各一次,饭后漱口。一些人 Oral cavity is the main entrance to the respiratory tract and gastrointestinal tract, contains a large number of pathogens, often keep the mouth clean, to prevent oral and systemic diseases have an important role. Brushing teeth is an important oral health care measures, its purpose is to remove oral bacteria, food debris, tartar, calculus, facial pigment spots. Brushing habits should be morning and evening, mouthwash. some people