Mehdizadeh Mojdeh, Ahmadi Navid, Jamshidi Mahsa
Associate Professor, Department of Oral and Maxillofacial Radiology, School of Dentistry, Torabinejad Dental Research Center; Dental Implants Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
Student, Department of Dentistry, University of Medical Sciences Isfahan, Iran, Phone: +989131093769, e-mail:
J Contemp Dent Pract. 2014 Nov 1;15(6):740-5. doi: 10.5005/jp-journals-10024-1609.
Exact location of the inferior alveolar nerve (IAN) bundle is very important. The aim of this study is to evaluate the relationship between the mandibular third molar and the mandibular canal by cone-beam computed tomography.
This was a cross-sectional study with convenience sampling. 94 mandibular CBCTs performed with CSANEX 3D machine (Soredex, Finland) and 3D system chosen. Vertical and horizontal relationship between the mandibular canal and the third molar depicted by 3D, panoramic reformat view of CBCT and cross-sectional view. Cross-sectional view was our gold standard and other view evaluated by it.
There were significant differences between the vertical and horizontal relation of nerve and tooth in all views (p < 0.001).
The results showed differences in the position of the inferior alveolar nerve with different views of CBCT, so CBCT images are not quite reliable and have possibility of error.
下牙槽神经（IAN）束的精确位置非常重要。本研究的目的是通过锥形束计算机断层扫描评估下颌第三磨牙与下颌管之间的关系。
这是一项采用便利抽样的横断面研究。使用CSANEX 3D机器（芬兰索雷得克斯公司）进行了94例下颌锥形束计算机断层扫描（CBCT），并选择了3D系统。通过CBCT的3D、全景重组视图和横断面视图描绘下颌管与第三磨牙之间的垂直和水平关系。横断面视图是我们的金标准，其他视图通过它进行评估。
在所有视图中，神经与牙齿的垂直和水平关系均存在显著差异（p < 0.001）。
结果显示，CBCT不同视图下下牙槽神经的位置存在差异，因此CBCT图像不太可靠，存在误差可能性。
