磁共振成像——用于牙种植体术后评估的诊断工具：病例报告
Magnetic resonance imaging-a diagnostic tool for postoperative evaluation of dental implants: a case report.
作者信息
Wanner Laura, Ludwig Ute, Hövener Jan-Bernd, Nelson Katja, Flügge Tabea
机构信息
Department of Oral and Maxillofacial Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Department of Radiology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany.
出版信息
Oral Surg Oral Med Oral Pathol Oral Radiol. 2018 Apr;125(4):e103-e107. doi: 10.1016/j.oooo.2018.01.005. Epub 2018 Jan 31.
OBJECTIVE
Compared with cone beam computed tomography (CBCT), magnetic resonance imaging (MRI) might be superior for the diagnosis of nerve lesions associated with implant placement.
STUDY DESIGN
A patient presented with unilateral pain associated with dysesthesia in the region of the right lower lip and chin after implant placement. Conventional orthopantomography could not identify an association between the position of the inferior alveolar nerve and the implant. For 3-dimensional display of the implant in relation to the surrounding anatomy, CBCT was compared with MRI.
RESULTS
MRI enabled the precise depiction of the implant position and its spatial relation to the inferior alveolar nerve, whereas the nerve position and its exact course within the mandible could not be directly displayed in CBCT.
CONCLUSION
MRI may be a valuable, radiation-free diagnostic tool for the visualization of intraoral hard and soft tissues, offering an objective assessment of nerve injuries by a direct visualization of the inferior alveolar neurovascular bundle.
目的
与锥形束计算机断层扫描（CBCT）相比，磁共振成像（MRI）在诊断与种植体植入相关的神经病变方面可能更具优势。
研究设计
一名患者在种植体植入后出现右下唇和下巴区域单侧疼痛并伴有感觉异常。传统曲面断层摄影术无法确定下牙槽神经位置与种植体之间的关联。为了三维显示种植体与周围解剖结构的关系，对CBCT和MRI进行了比较。
结果
MRI能够精确描绘种植体位置及其与下牙槽神经的空间关系，而CBCT无法直接显示神经在下颌骨内的位置及其确切走行。
结论
MRI可能是一种有价值的、无辐射的诊断工具，用于可视化口腔内软硬组织，通过直接观察下牙槽神经血管束对神经损伤进行客观评估。
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