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【多选题】
脓肿扩散途径:A.
穿破在颊肌下颌骨附丽以上可形成颊侧牙龈瘘；若在颊肌下颌骨附丽以下则形成面颊瘘。严重者可导致颊间隙感染。
B.
外沿下颌升支外侧面扩散，可导致咬肌间隙感染和边缘性骨髓炎。
C.
沿下颌升支内侧可扩散导致翼下颌间隙和咽旁间隙感染，或扁桃周围脓肿
D.
向下可导致颌下间隙脓肿和口底蜂窝。
E.
向下可导致颈部炎症
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