18.K式根管銼針(K-type files)之橫切面設計由正方形改為菱形(K-Flex type files)之後,下列何者被明顯地提昇?
(A)抗張強度(tensile strength)
(B)堅硬度(stiffness)
(C)彈性度(elasticity)
(D)可彎曲性(flexibility)
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統計: A(59), B(25), C(82), D(441), E(0) #1379476
統計: A(59), B(25), C(82), D(441), E(0) #1379476