acute necrotizing ulcerative gingivitis

例句：

1. 1. The patient hada severe case of acute necrotizing ulcerative gingivitis.
   这位病人患有严重的急性坏死性溃疡性牙龈炎。
2. 2. The dentist performed an emergencyroot canal treatment on the patient withacute necrotizing ulcerative gingivitis.
   牙医对患有急性坏死性溃疡性牙龈炎的病人进行了紧急根管治疗。
3. 3. The condition ischaracterized by pain, swelling, and bleedinggums in patients with acute necrotizing ulcerative gingivitis.
   在患有急性坏死性溃疡性牙龈炎的患者中，这种状况表现为疼痛、肿胀和出血的牙龈。