本篇病例报告是一个在上颚前牙区有三颗阻生牙之病例。
This case report here presents a child with 3 impacted teeth in right anterior maxilla.
目的：探讨防止埋伏阻生牙矫治过程中各种并发症的措施。
Objective:To investigate the measure for avoiding the complication during the process of impacted teeth treatment.
目的探讨综合摄片法在矫治错位阻生牙中的作用及价值评价。
Purpose to explore effect of complex radiography in impacted malposed tooth therapy and appraise its value.
结论：正畸病人埋伏阻生牙能通过治疗恢复牙列美观与功能。
Conclusion The impacted teeth can restor the functions and beauty .
结果14例患者取得明确定位，1例因阻生牙与参照牙距离过近而失败。
Results 14 patients were localized successfully, and one patient was failing because the distance between the impacted tooth and the reference tooth is too close to differentiate.
方法：应用固定正畸技术对16例埋伏阻生牙采用助萌法或导萌法矫治。
Methods: 16 patients with impacted anterior maxillary teeth were treated with fixed orthodontic technique.
模型显示列楔状缺损、龋齿、根尖脓肿、根尖肉芽肿、阻生牙齿及神经、动脉和静脉等。
Model showsingwedge-shaped defects, dental caries, periapical abscess, periapical granuloma, impacted teeth and nerves, arteries and veins.
智齿在生长的过程中通常会影响到其他牙齿，成为阻生牙或异位，这时候通常要拔除智齿。
Wisdom teeth commonly affect other teeth as they develop, becoming impacted or "coming in sideways". They are often extracted when this occurs.
目的：探讨高速涡轮机在辅助拔牙，特别是在下颌近中低位及水平位阻生牙的拔除中的优越性。
Objective:To investigate the superiority by using high speed air turbine drill in extraction of impacted mandibular teeth, especially in low mesioangular impaction and horizontal impaction.
不能依靠曲面断层片上阻生牙牙冠与邻牙牙根的重叠范围来判断是否存在切牙的牙根吸收及吸收程度。
The overlap range of impacted canine and the root of incisors can't be used as an indicator of the extent of the incisor root resorption.
结果：上颌骨内埋伏阻生牙33颗，均能准确无误地显示出埋伏牙的方向、形态、数目、唇腭侧骨质厚度。
RESULTS: It was found that the number, size, shape, location, Angle between crown and root of all the 33 impacted teeth could be displayed accurately.
结果翻瓣术式后固定矫正器经12 ~18个月，开窗术式后固定矫正器8 ~ 12个月使倒置埋伏阻生牙进入牙弓排齐。
Results after flap operation, the inversely impacted teeth was aligned by using fixed appliance for 12 ~ 18 months. And after fenestration it needs 8 ~ 12 months.
结论DCT可以为牙种植、肿瘤与囊肿、埋伏阻生牙、炎症的诊断提供足够有效的信息，并为其治疗方案和手术方式的选择提供依据。
Conclusion DCT could provide sufficiently valuable evidences in diagnose and surgical therapy of dental implantation, tumor and cyst, impacted and embedded tooth, inflammatory diseases.
结论DCT可以为牙种植、肿瘤与囊肿、埋伏阻生牙、炎症的诊断提供足够有效的信息，并为其治疗方案和手术方式的选择提供依据。
Conclusion DCT could provide sufficiently valuable evidences in diagnose and surgical therapy of dental implantation, tumor and cyst, impacted and embedded tooth, inflammatory diseases.
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