Heins P J, Wieder S M
J Dent Res. 1986 Jun;65(6):948-51. doi: 10.1177/00220345860650061901.
Serial sections of jaw segments from a human post mortem population of 29 individuals providing 116 posterior interproximal sites were examined at the light microscopic level. Minimum inter-root distances at the locale of closest proximity ranged from more than 4 mm to less than 0.1 mm. They were located in the coronal third of pre-molars and mandibular first and second molars and the middle third of maxillary first molars and second molar interproximal spaces. Cancellous bone flanked by lamina dura was found between 89.6% of the teeth examined and was observed where inter-root distances exceeded 0.5 mm. At sites of less than 0.5 mm, cancellous bone was not observed, and, instead, adjacent laminae durae appeared fused (7.7%). Bone was not observed between root surfaces which were less than 0.3 mm apart, but in these instances the roots were connected by a periodontal ligament.
对来自29名个体的人类尸检样本的颌骨节段连续切片进行了光学显微镜检查，这些样本提供了116个后牙邻面部位。最接近部位的最小牙根间距范围从超过4毫米到小于0.1毫米。它们位于前磨牙以及下颌第一和第二磨牙的冠三分之一处，以及上颌第一磨牙和第二磨牙邻间隙的中三分之一处。在89.6%的检查牙齿之间发现了由硬骨板包绕的松质骨，并且在牙根间距超过0.5毫米的地方观察到了松质骨。在间距小于0.5毫米的部位未观察到松质骨，相反，相邻的硬骨板似乎融合在一起（7.7%）。在牙根表面间距小于0.3毫米的部位未观察到骨质，但在这些情况下，牙根由牙周膜相连。
