A.20s B.30s C.40s D.50s E.60s
A.1 B.2 C.3 D.4 E.5
A.Ⅰ類洞的充填 B.Ⅱ類洞的充填 C.經(jīng)完善牙髓治療的后牙的組織缺損修復(fù) D.缺損面積大的無髓牙全冠修復(fù)前的充填 E.Ⅲ類洞的充填