尹某某，女，２３岁。因左上后牙持续性疼痛３天就诊。检查：｜７远中面洞，深而大，可见髓室底，探痛（－），叩痛（＋），龈不红肿。诊断为：｜７急性根尖周炎。处理：｜７根管扩大，３％双氧水和生理盐水交替冲洗，干燥，置樟脑酚棉捻。第２天上午复诊，自述治疗当天... Yin Moumou, female, 23 years old. 3 days due to persistent pain in upper left posterior teeth. Check: | 7 far Zhongxian face hole, deep and large, visible pith chamber, pain (-), percussion pain (+), gingival swelling. Diagnosis is: | 7 acute apical periodontitis. Treatment: 7 root canal expansion, 3% hydrogen peroxide and saline alternating wash, dry, home camphor phenol cotton twist. Second morning visit, readme day of treatment ...