22 由於先天性梅毒(congenital syphilis)的侵害,正中門齒在唇側面產生螺絲起子狀(screwdriver)的 牙冠形態變異,稱之為何?
(A)釘狀門齒(peg incisor)
(B)塔隆牙阜(talon cusp)
(C)赫欽孫氏門齒(Hutchinson’s incisor)
(D)多生齒(supernumerary tooth)

答案:登入後查看
統計: A(68), B(13), C(442), D(4), E(0) #883351