1. 下列敘述何者正確?
A.牙釉珠(enamel pearls )最常見於下顎大臼齒
B. 齒頸部牙釉突(cervical enamel extension )之發生率上顎大臼齒多於下顎大臼齒
C. 齒頸部牙釉突(cervical enamel extension )常造成頰側雙叉囊腫(buccal bifurcation
cysts )
D. 牙釉珠(enamel pearls )和齒頸部牙釉突(cervical enamel extension )與該部位牙周病
之形成無關