33.下列那一種溶液,清除塗抹層(smear layer)的效果最好?
(A)過氧化氫(Hydrogen peroxide)
(B)窩洞清潔劑(Tubulicid)
(C)聚丙烯酸(Polyacrylic acid)
(D)過氧尿素(Carbamide peroxide)

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統計: A(38), B(68), C(185), D(11), E(0) #1035044

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