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首页> 外文期刊>Journal of Pharmacy and Bioallied Sciences >Reliability of Cone Beam Computed Tomography in Comparison with Panoramic Radiography to Predict the Anatomical Relationship of Inferior Alveolar Nerve with Mandibular Third Molar: A Radiological and Clinical Study
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Reliability of Cone Beam Computed Tomography in Comparison with Panoramic Radiography to Predict the Anatomical Relationship of Inferior Alveolar Nerve with Mandibular Third Molar: A Radiological and Clinical Study

机译：与全景造影相比，锥形光束计算机断层扫描的可靠性预测下颌三摩尔下牙槽神经的解剖学关系：放射学和临床研究

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The purpose of the study was to assess the precision of cone beam computed tomography (CBCT) in comparison with panoramic radiography in determining the anatomical relationship of inferior alveolar nerve (IAN) with the impacted mandibular third molar.Materials and Methods:Twenty patients diagnosed with the following panoramic radiographic markers: darkening of the root, interruption of white line of mandibular canal, diversion of mandibular canal, and narrowing of the roots suggesting a close relationship of roots with the mandibular canal were selected and underwent an additional CBCT to assess the proximity of IAN to mandibular third molar roots. All patients were assessed for loss of sensation or neurosensory deficit in the chin and lower lip during postoperative period by objective and subjective methods.Results:Twenty patients with an average age of 25.4 years (21–39 years) with 21 impacted mandibular third molars were included in this sample. It was found that after the removal of impacted third molars, IAN was not visible in any of the cases and postoperative objective and subjective neurosensory tests showed no signs of neurosensory disturbances.Conclusion:The study found that CBCT had limited usefulness in neurovascular bundle exposure prediction, prior to surgical removal of impacted mandibular third molars. The accuracy of radiographic markers in conventional panoramic radiography to predict neurovascular exposure was also limited.
机译：该研究的目的是评估锥形光束计算机断层扫描（CBCT）的精度与全景造影相比，在确定下牙槽神经（IAN）与受冲击下颌第三摩尔的解剖学关系中的基础射线照相。材料和方法：诊断出来的二十名患者下列全景射线显影标记：根茎的根部变暗，下颌管的中断，下颌管转移，并缩小根部与下颌管的根源紧密关系，并进行额外的CBCT来评估接近的CBCT以评估近距离IAN到颌骨第三磨牙根。通过目标和主观方法在术后期间评估所有患者丧失下巴和下唇中的感觉或神经传感缺损。结果：25.4岁（21-39岁）的二十例患者21个受影响的下颌三臼齿包含在此样本中。结果发现，在去除受影响的第三磨牙后，IAN在任何情况下都不可见，并且术后目标和主观神经感觉测试显示无神经感扰的迹象。结论：研究发现CBCT在神经血管束暴露预测中有限的有用性。 ，在手术切除受冲击下颌三臼齿之前。传统全景造影中射线照相标记的准确性预测神经血管暴露也有限。

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