Frankle K T, Seibel W, Dumsha T C
J Endod. 1990 Oct;16(10):480-5. doi: 10.1016/s0099-2399(07)80177-4.
In order to determine the position of the anatomical apex of the mesial roots of the first and second molars, the horizontal distance from the outer surface of the buccal cortical plate to the apex and the vertical distance from the superior border of the neurovascular bundle to the apex were examined in 33 human cadaver mandible halves. The vertical distances were compared with measurements taken from periapical radiographs between the apex of each mesial root and the superior border of the mandibular canal prior to sectioning. The means of the horizontal buccal distances of the second molar were found to be significantly greater than those of the first molar. The means of the vertical distances of the second molar were found to be significantly less than those of the first molar. A high correlation was found between the vertical anatomic and radiographic measurements. In the majority of the sections, the neurovascular bundle was found in the lingual half of the mandible.
为了确定第一和第二磨牙近中根根尖的解剖位置，在33个半侧人体尸体下颌骨中，检测了从颊侧皮质板外表面到根尖的水平距离以及从神经血管束上缘到根尖的垂直距离。在切片前，将垂直距离与从根尖片测得的每个近中根根尖与下颌管上缘之间的距离进行比较。发现第二磨牙水平颊侧距离的平均值显著大于第一磨牙。发现第二磨牙垂直距离的平均值显著小于第一磨牙。垂直解剖测量值与影像学测量值之间存在高度相关性。在大多数切片中，神经血管束位于下颌骨的舌侧半。
