52.藉由牙冠增長術(crown-lengthening procedures)來增加牙齒的長度,主要的考量為何?
(A)邊緣整體性(marginal integrity)
(B)保存牙齒結構(preservation of tooth structure)
(C)修復體固位(retention)
(D)增長生物寬度(biologic width)

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統計: A(17), B(11), C(117), D(42), E(0) #1042200