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1964年,美国牙科协会牙科治疗学委员会对牙膏所下的定义是:同牙刷一起使用来清洁牙面的物质。它的功能有:一、美容作用,即清洁和抛光牙面,并给予清新气味,二、美容及防治作用,即物理性地清除牙菌斑,三、防治的药理学作用;即输送药物到牙齿表面上或牙齿周围环境中,通过药物的化学和药理作用减少牙菌斑、牙结石、牙龈炎或龋齿。具有第三方面功能的牙膏叫药物牙膏。1945年生产出氟化钠牙膏,但由于磨料不合适,实际上没有防龋作用。1954年改用
In 1964, the Dental Association of the American Dental Association dental toothpaste under the definition is: with the toothbrush to clean the teeth of the substance. Its functions are: First, the role of beauty, that is, clean and polish the teeth, and to give a fresh smell, and beauty and prevention and control of the role of physical removal of plaque, three, prevention and treatment of pharmacological effects; that is, Dental plaque, calculus, gingivitis or dental caries are reduced by the chemical and pharmacological effects of the drug on the surface of the tooth or in the vicinity of the tooth. Toothpaste with the third function is called drug toothpaste. In 1945 sodium fluoride toothpaste was produced, but because of the abrasive is not suitable, there is virtually no anti-caries effect. 1954 switch to use