A.0.5mm B.2mm C.3.5mm D.5.5mm E.6.5mm
A.3-4歲 B.6-7歲 C.12-13歲 D.18-20歲 E.任何年齡
A.義齒修復(fù)率 B.DMFT C.患齲率 D.應(yīng)答率