世纪口腔预防医学对人类最大的贡献之一就是发现氟化物能够预防龋病。
Fluoride could prevent dental caries which is one of the maximum dedication to human beings of oral preventive medicine in 20 Centuries.
世纪口腔预防医学对人类最大的贡献之一就是发现氟化物能够预防龋病。
Fluoride could prevent dental caries which is one of the maximum dedication to human beings of oral preventive medicine in 20 Centuries.
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