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首页> 外文期刊>Journal of Dentistry >Evaluation of Infraorbital Canal in Cone Beam Computed Tomography of Maxillary Sinus
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Evaluation of Infraorbital Canal in Cone Beam Computed Tomography of Maxillary Sinus

机译：上颌窦锥体束计算机断层扫描技术评价眶下管

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Statement of the Problem: Ignoring anatomic variations may lead to iatrogenic injuries by surgeons.Purpose: The aim of this study was to examine the relationship between the course of infraorbital canal and maxillary sinus using cone beam computed tomography scans (CBCT).Materials and Method: One hundred and ninety two CBCT scans were reviewed for 384 infraorbital canals. The anatomic variants of infraorbital canals were classified into three types based on the protrusion degree of the infraorbital nerve from the maxillary roof into the sinus. Measurements were made on infraorbital canal as vertical distance from the infraorbital rim to the infraorbital foramen, the maximum horizontal distance from the infraorbital canal to the canine root, the maximum diagonal length of the nerve protruded in sinus, the maximum vertical distance from the center of the nerve to the sinus roof.Results: 26.5% of infraorbital canals were entirely contained within the sinus roof. 50.3% of infraorbital canals were located below the roof but remaining juxtaposed to it. In 23.2%, the nerve canal descended into the sinus. The prevalence of type3 of infraorbital canal significantly increased from 14.8% in cases without an ipsilateral Haller cell to 29.1% when a Haller cell was present. The average distance between the infraorbital foramen and the infraorbital rim were increased proportionally to the degree of protrusion of the nerve course into the maxillary sinus (ANOVA p 0.001).Conclusion: The infraorbital canal protrusion into the sinus is a common variation that must be considered during surgical procedures to avoid iatrogenic injury.
机译：问题陈述：忽略解剖变化可能会导致外科医生医源性伤害目的：本研究的目的是使用锥形束计算机X线断层扫描（CBCT）检查眶下通道与上颌窦之间的关系。 ：对384颗眶下管进行了92次CBCT扫描。根据眶下神经从上颌骨顶部到窦的突出程度，将眶下解剖结构分为三种类型。对眶下管进行以下测量：从眶下缘到眶下孔的垂直距离，从眶下管到犬齿根的最大水平距离，在窦内突出的神经的最大对角线长度，从鼻窦中心的最大垂直距离。结果：26.5％的眶下管完全包含在窦顶内。 50.3％的眶下管位于屋顶下方，但并列并置。神经管下降到鼻窦占23.2％。眶下3型患病率从没有同侧Haller细胞的情况下的14.8％显着增加到存在Haller细胞的情况下的29.1％。眶下孔与眶下缘之间的平均距离与神经向上颌窦的突出程度成正比（ANOVA p <0.001）。结论：眶下管向窦内突出是一个常见的变化，必须在手术过程中考虑避免医源性伤害。

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