50.以金屬鑄造體進行第二類窩洞復形時,在鄰接盒處進行二級外展(secondary flare)的修形時,使用下列何種鑽針較為合適?
(A)
long pear-shape carbide bur
(B)
round carbide bur
(C)
pointed football diamond bur
(D)
inverted cone diamond bur
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統計: A(98), B(12), C(433), D(81), E(0) #1379508
統計: A(98), B(12), C(433), D(81), E(0) #1379508