阻生恒牙的影像学调查分析  

Investigation of permanent impacted teeth except the third molar through an X-ray study

作　　者：侯锐[1] 孔亮[1] 敖建华[1] 刘桂才[1] 周宏志[1] 秦瑞峰[1] 胡开进[1] 

机构地区：[1]第四军医大学口腔医学院口腔颌面外科,陕西西安710032

出　　处：《中国口腔颌面外科杂志》2010年第4期304-308,共5页China Journal of Oral and Maxillofacial Surgery

摘　　要：目的:对患者除第三磨牙之外其他恒牙的阻生情况进行影像学分析。方法:通过全口曲面断层片,研究548例阻生牙的阻生情况,记录患者的性别、年龄、阻生牙位以及阻生类型,分析导致恒牙阻生的局部因素。结果:除第三磨牙外的恒牙阻生的发生率是6.15%,女性发生率高于男性,上颌牙阻生发生率高于下颌牙。尖牙阻生发生率最高,占所有阻生牙的28.10%。垂直阻生最多(49.09%)。发生阻生的最常见的局部因素是间隙不足(49.64%)。结论:所有恒牙均有可能发生阻生。口腔科医师在制定治疗计划前首先要有一个全面的评估。PURPOSE：To investigate the incidence and the local factors of permanent impacted teeth except the third molar through an X-ray study.METHODS：Five hundred and forty-eight permanent impacted teeth from the panoramic radiographs were studied and recorded according to the patients＇ gender and age,the tooth position and the classification of impaction.Local factors contributing to permanent ihundredmpacted tooth were also investigated.RESULTS：The incidence of permanent impacted teeth was 6.15% in the study.The impacted tooth had a predilection for females,and was more common in the maxilla.The impaction of canine had the highest occurrence,accounting for 28.10% of all impacted teeth.The vertical impaction accounted for the most part（49.09%）.The chief local factor of impacted teeth was lack of interdental space（49.64%）.CONCLUSION：All the permanent teeth may occur with impaction in Chinese population.The dentists should give a thorough evaluation before planning the suitable treatment.

关 键 词：恒牙 牙阻生 全口曲面断层片 X线影像 

分 类 号：R783.5[医药卫生—口腔医学]