拔除下颌第三磨牙,特别是低位水平阻生误入翼颌间隙者,临床上并不少见,但误入的牙体逆行向上移位,高达髁状突平面确属罕见,笔者现将所遇一例病例报道如下: 患者秦××,女,19岁,住院号2799,于1990年3月5日,在我院门诊行“18低位水平阻生牙”拔除术。术中致牙体穿破该牙舌侧骨板误入翼颌间隙,下颌骨侧位片显示牙位于左下颌角前下方,次 Removal of the mandibular third molars, especially in the low level of impaction into the wing of the jaw space, is not uncommon clinical, but the stray retrograde upward displacement of the retrograde up to the condylar plane is indeed rare, I now encounter A case was reported as follows: Patients Qin × ×, female, 19 years old, hospital number 2799, on March 5, 1990, in our hospital outpatient “18 low level impacted tooth” removal. During surgery, the tooth body pierced the lingual bone plate into the space of the maxillary jaw. The mandibular lateral radiograph showed that the tooth was located in front of the left mandibular angle.