A.氟片B.氟化飲水C.氟滴劑D.氟化食鹽E.氟化牛奶
A.患齲率B.無齲率C.齲病發(fā)病率D.齲均E.齲面均
A.釉質(zhì)表層B.牙骨質(zhì)C.牙本質(zhì)D.釉質(zhì)牙骨質(zhì)界E.釉質(zhì)深層