Zhu S R, Wang X L
Department of Stomatology, Tongji Hospital, Tongji Medical University, Wuhan.
Zhonghua Kou Qiang Yi Xue Za Zhi. 1994 Jul;29(4):204-6, 254.
The dental pulpal histology was studied experimentally in rabbits after the inferior alveolar neurovascularity damage and nerve graft. The results revealed that the dental vitality was gradually repaired at different intervals after the inferior alveolar neurovascularity damage. In the early damaged period the pulpal blood vessels were reduced in number and some of them were swollen and permeable, in the late period the structure of the microvascular system became normal and abundant. The pulpal architecture was altered in the initial stage and with the tendency to repair gradually. The pulpal axon degenerated in early stage and reinnervated later. The authors indicate that there are no evident affections for dental pulpal tissues whatever the inferior alveolar neurovascularity is damaged and repaired. This has an important clinical value to define the dental pulp vitality in mandibular subapical osteotomy and tumor resection.
在兔下颌牙槽神经血管损伤及神经移植后，对牙髓组织学进行了实验研究。结果显示，在下牙槽神经血管损伤后的不同时间段，牙齿活力逐渐得到修复。在损伤早期，牙髓血管数量减少，部分血管肿胀且通透性增加；在后期，微血管系统结构恢复正常且丰富。牙髓结构在初始阶段发生改变，并逐渐有修复的趋势。牙髓轴突在早期发生退变，后期重新获得神经支配。作者指出，无论下牙槽神经血管损伤还是修复，对牙髓组织均无明显影响。这对于确定下颌根尖下截骨术和肿瘤切除术中的牙髓活力具有重要的临床价值。
