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A.牙髓炎時由于根尖孔狹小不易引起根尖炎
B.由于牙髓組織松軟，感染容易擴散到全牙髓
C.牙髓炎時血管擴張，滲出液聚集，壓迫神經(jīng)產(chǎn)生劇烈疼痛
D.牙髓炎時開髓減壓可以緩解劇痛
E.為了順利而成功地進(jìn)行牙髓炎治療，必須熟悉每個牙的髓腔形態(tài)

A.鼻腭神經(jīng)+腭前神經(jīng)+上牙槽前神經(jīng)
B.上牙槽后神經(jīng)+腭前神經(jīng)
C.下牙槽神經(jīng)+舌神經(jīng)
D.上牙槽中神經(jīng)+上牙槽后神經(jīng)+腭前神經(jīng)
E.下牙槽神經(jīng)+舌神經(jīng)+頰長神經(jīng)拔除下列牙時應(yīng)麻醉哪組神經(jīng)