1892年，康涅狄格州的华盛顿.设菲尔德医生首次制成软管牙膏：设菲尔德医生乳剂牙膏。
因此，这类生物来源二氧化硅颗粒令人惊讶地赋予洁齿剂组合物有益的性能。
1·The prevalence of dental fluorosis of the children drinking low fluorine water was no difference no matter whether using fluoride dentifrice or not.
饮用低氟水的儿童无论是否使用含氟牙膏，其氟斑牙患病率间没有差别。
2·Time like hardly using up dentifrice, as long as you crush it, it must have a little!
时间就像快用完的牙膏，只要你去挤，总还有一点。
1·He invented the dentifrice called WuDi and founded the Family Industry Manufactory in 1918. Since then he chooses his way as a industrialist.
1918年陈蝶仙成立家庭工业社，研制出一种名叫无敌牌的牙粉，从此走上实业家的道路。