智齿阻生虽为临床常见疾患,完全倒置阻生则为少见,现介绍3例。例1:唐×,女,31岁,农民。因左下后牙区反复肿痛溢脓4个月就诊,先后经瘘管刮治,抗感染治疗多次无效。口腔检查:张口近3横指,8未见萌出,左下颌角前2cm处见一皮肤瘘口,有嗅味的脓性分泌物外溢。摄X线左下颌骨侧位片显示:8区见第 Wisdom tooth implants Although clinical common diseases, complete inversion of the resistance is rare, are introduced in 3 cases. Example 1: Don ×, female, 31 years old, farmer. Because of the lower left posterior teeth area repeatedly swelling pain pus 4 months treatment, has been cured by fistula, anti-infective treatment repeatedly invalid. Oral examination: Zhang mouth nearly 3 horizontal means, 8 no eruption, the left mandibular angle in front of 2cm to see a skin fistula, smell of purulent discharge of secretions. Photograph of the left lateral mandibular radiographs showed: 8 District see the first