题目内容：
导致根尖周病的主要感染途径是（ ）。
A．感染根管 B．邻牙病波及
C．深牙周袋
D．血行感染
E．以上都不是
参考答案：
答案解析：
单选题：导致根尖周病的主要感染途径是（ ）。
- 题目分类：口腔助理医师
- 题目类型：单选题
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B．邻牙病波及
C．深牙周袋
D．血行感染
E．以上都不是
B．邻牙病波及
C．深牙周袋
D．血行感染
E．以上都不是
The attitude of the author towards the research project is
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