摘要
目的：回顾性分析锥形束CT（CBCT）在上颌埋伏阻生中切牙诊断及定位中的价值。方法：经CBCT确诊为上颌埋伏阻生中切牙的56例患者的58颗中切牙为研究对象,分析上颌埋伏阻生中切牙的阻生特点及其邻近组织情况。结果：56例患者年龄7~42岁,男女比例为1.67：1,其中54例（96.43%）为单侧阻生,2例（3.57%）为双侧阻生;39颗（67.24%）牙为唇侧阻生,其中倒置阻生21颗（53.85%）,水平阻生6颗（15.38%）,倾斜阻生12颗（30.77%）;17颗（29.31%）为腭侧阻生,其中水平阻生5颗（29.41%）,倾斜阻生12颗（70.59%）;2颗（3.45%）为垂直阻生。埋伏阻生上颌中切牙及其邻近组织常伴有各种异常。结论：上颌中切牙阻生情况复杂,埋伏中切牙及其邻近组织常存在各种异常。CBCT能精确直观地显示上颌埋伏阻生中切牙及其邻近组织情况,对埋伏阻生上颌中切牙的诊断和定位具有重要的指导意义。
Objective： To evaluate the value of cone-beam CT（CBCT） in the diagnosis and orientation of maxillary impacted central incisors. Methods： 58 maxillary impacted central incisors of 56 patients were included,which were examined by CBCT. The characteristics of impacted central incisors and the situation of its neighboring tissues were analyzed. Results： Among 56 patients（58 teeth）, aged 7 to 42, males∶females 1.67∶1, 54 patients were unilaterally impacted（96.43%） and 2 patients were bilaterally impacted（3.57%）. 39 teeth were located labially, including 21 inverted impacted teeth, 6 horizontally impacted teeth, and 12 inclined teeth. 17 teeth were located in the palatal side, including 5 horizontally impacted teeth and 12 inclined teeth. 2 teeth were within the bone. Conclusion： The condition of impacted maxillary central incisors is complicated, and its surrounding tissue often presents a variety of abnormalities. CBCT imaging yields accurate 3-dimensional pictures of impacted maxillary central incisors and their local dental and bony structures,which is helpful for the diagnosis and orientation of impacted maxillary central incisors.
出处
《泸州医学院学报》
2014年第5期500-503,共4页
Journal of Luzhou Medical College
关键词
上颌埋伏中切牙
锥形束CT
三维成像
Maxillary impacted central incisor
Cone-beam CT
3-dimensional imaging
