患者.男.28岁。右侧面部肿胀不适1年，服“消炎药”后好转.停药几天即复发，反复发作多次。此次复发来我院就诊，检查见：右颊部肿胀，鼻唇沟变浅，皮肤红，压痛明显。牙齿无龋坏、松动、叩痛。右上磨牙区前庭沟肿胀消失。X片发现红颊向低位阻生。诊断为：引阻生、冠周脓肿。治 Patient, male, 28 years old. The right side of the facial swelling and discomfort for 1 year, after taking “anti-inflammatory drugs” improved after stopping a few days that relapse, repeated episodes many times. The recurrence to our hospital, check see: right cheek swelling, shallow nasolabial fold, red skin, tenderness significantly. Caries-free teeth, loose, percussion pain. Upper right molar area vestibular swelling disappears. X-ray found red buccal impaction to the lower. Diagnosed as: lead to impose, crown weeks abscess. rule