题目内容
该牙经处理后出现上述剧烈疼痛，最可能的原因是
2021-11-10
A.根尖周的细菌感染
B.药物对根尖周的化学性刺激
C.磨牙时的振动对根尖周的创伤
D.器械超出根尖孔所致
E.封洞太严密
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