正确使用局部和全身的氟化物，导致大量减少龋齿(蛀牙)和其相关的残疾。
The proper use of topical and systemic fluoride has resulted in major reductions in dental caries (tooth decay) and its associated disability.
正确使用局部和全身的氟化物，导致大量减少龋齿(蛀牙)和其相关的残疾。
The proper use of topical and systemic fluoride has resulted in major reductions in dental caries (tooth decay) and its associated disability.
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