并加入蔗糖和氟化物两个外在因素，观察菌斑中细菌代谢引起的氨基酸含量的变化，进一步探讨氨基酸与龋易感性的关系。
Along with two other factors of saccharose and fluoride, the change of amino acids contents was observed, which would help to discover the association between amino acid and caries susceptibility.
目的观察三种氟化物处理后的乳牙釉质表面抵抗软饮料酸蚀及促进受损牙釉质再矿化的能力。
Objective To study the effect of several fluorides on resistance to erosion of beverage on enamel and remineralization of etched enamel .
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