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1、國際愛牙日英語翻譯為International tooth-friendly day。

2、國際愛牙日簡介：In 1989, the ministry of health, education and other ministries and commissions jointly signed, the annual September 20 as the National Day of loving teeth. The aim is to mobilize the power of the society to prevent and protect dental diseases and popularize dental knowledge among the public through tooth day activities, enhance oral health concept and self-awareness of oral health, and establish oral health behavior, so as to improve the oral health level of the whole nation.（1989年，由衛(wèi)生部、教委等部委聯(lián)合簽署，確定每年的9月20日為全國愛牙日。宗旨是通過愛牙日活動，廣泛動員社會的力量，在群眾中進(jìn)行牙病預(yù)防、保護(hù)牙齒知識的普及教育，增強(qiáng)口腔健康觀念和自我口腔保健的意識，建立口腔保健行為，從而提高全民族的口腔健康水平。）