患者，男，l9岁。右上前牙受伤，但未折断。半年后，该牙逐渐变色，变色的原因是（　　）。 -题库考试答案搜索网

患者，男，l9岁。右上前牙受伤，但未折断。半年后，该牙逐渐变色，变色的原因是（　　）。

单选题

2021-07-17 21:24

A、患牙失去血液供应
B、细菌分解产物进入牙本质小管
C、脓性分泌物进入牙本质小管
D、胆固醇结晶进入牙本质小管
E、血红蛋白的分解产物进入牙本质小管

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正确答案

E

试题解析

标签：医药卫生类执业医师口腔执业医师口腔临床医学综合精选真题及详解（1）

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