【名词&注释】
漱口水(rinse solution)、使用方法(using method)、发生率、氟化钠(sodium fluoride)、学龄儿童(school children)、氟牙症(dental fluorosis)、具体情况(concrete conditions)
[单选题]窝钩封闭中乳牙的酸蚀时间为()
A. 20s
B. 40s
C. 10s
D. 60s
E. 2min
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学习资料:
[单选题]某学龄儿童采用0.05%NAF漱口水预防龋齿,其使用方法应为()
A. 每月含漱1次,每次10ml,含漱1min
B. 每周含漱1次,每次10ml,含漱1min
C. 每天含漱1次,每次10ml,含漱1min
D. 隔周含漱1次,每次10ml,含漱1min
E. 隔天含漱1次,每次10ml,含漱1min
[单选题]水氟浓度在多少时,患龋率和龋均最低,氟牙症(dental fluorosis)发生率也较低()
A. 0.2~0.4
B. 0.4~0.6
C. 0.6~0.8
D. 0.8~1.0
E. 1.0~1.2
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