患者,女,25岁。近中颊大面积银汞充填,根充完善,最佳的修复设计是()
A.全瓷嵌体
B.3/4冠
C.塑料全冠
D.金属烤瓷冠
E.金合金全冠
参考答案:D
牙槽窝的游离缘为
A.牙槽骨 B.牙槽窝 C.牙槽嵴 D.牙槽间隔 E.牙根间隔
He tried to () (解释), but she wouldn't listen.