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1·Impacted tooth frequently appears in upper cuspid and upper central incisors(except of the third molar) .

较常见的是尖牙和上颌切牙的埋伏阻生（第三磨牙除外）。

2·Methods Fifty-nine patients with impacted tooth were taken transverse tomography by SIEMENS panoramic machine.

方法对59例上颌前部埋伏牙患者，通过SIEMENS全景机拍摄横断体层片。

3·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.

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。

4·The X-ray photographs of 400 cases of mandbular impacted third molar were observed and the impacted molar types and relations between impacted types and complications of impacted tooth were analysed.

通过400例下第三磨牙的X 线片观察，分析了阻生齿的阻生类型，阻生类型与阻生齿并发症的关系。

5·Purpose to explore effect of complex radiography in impacted malposed tooth therapy and appraise its value.

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。

6·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。

7·And it analyzed that hob tooth height and tooth top pour round radius impacted on gear tooth root crooked stress.

分析了滚刀齿高和齿顶倒圆半径对所切齿轮齿根弯曲应力的影响。

8·An impacted wisdom tooth is one that fails to completely rise through the gums — the term is erupt.

智慧人的牙齿的影响未完全起来的——这个术语爆发。

9·Objective: To improve retention of complete lower denture with impacted wisdom tooth as abutment.

目的：利用阻生智齿增加下颌单颌总义齿固位力。

10·Objective to evaluate the effect of autotransplantation of impacted anterior tooth and premolar.

目的评价自体牙移植的临床效果。