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本文介绍了一种摄取标准颅底观(颏顶位)X线头测量片的方法,讨论了其在正颌外科诊断及治疗设计中的作用。作者在左耳杆上设计了一个可移动的垂直眶针用以定位眶耳平面,以此获得较满意和稳定的颅底上下观头测量X线片。作者设计了颅底X线片的计测标志点,并通过30例正常人和9例颅面不对称畸形患者颅底片的研究讨论了颅底X线片的中线问题。颅底片可显示上下牙弓之间及与周围骨结构的关系,颅底、上颌及下颌结构清晰可见且可描绘,并可结合常规侧位片及正位片提供三维估计。通过头影剪裁方法可模拟骨移动变化及外科疗效的预测。
This article describes a method of taking a standard X - ray head of the skull base view, discussing its role in the diagnosis and treatment of orthognathic surgery. The author designed a movable vertical orbital needle on the left ear rod to locate the orbital ear plane so as to obtain a more satisfactory and stable X-ray film. The authors designed a skull base X-ray measurement mark points, and through 30 cases of normal subjects and 9 cases of craniofacial asymmetric deformity in patients with skull films to discuss the skull base X-ray of the midline problem. The skull base shows the relationship between the upper and lower dental arch and the surrounding bone structure. The skull base, maxillary and mandibular structures are clearly visible and can be depicted, and can be combined with conventional lateral and anteroposterior films to provide three-dimensional estimation. Through the cephalometric clipping method can be simulated bone movement changes and surgical efficacy of the prediction.