大鼠磨牙牙根根端组织异体移植实验

Allograft of the apical tissue of rat molar

目的:探讨大鼠磨牙牙根根端组织发育牙根和牙周组织的能力。方法:选择出生后25d的SD大鼠,切取下颌第一磨牙牙根端组织,移植于成年大鼠肾被膜下,4周后取材,组织学观察。结果:大鼠磨牙牙根端组织发育出根尖样组织结构。结论:牙根根端组织具有发育牙根和牙周组织的能力。

Objective：To evaluate the capability of the apical tissue of rat molar to grow tooth mot and periodontal tissue. Method： The apical tissue of the mandibular first molar root of PN 25d rat was isolated and implanted into the renal capsule of adult rat. After growing for 4w, the implants were harvested and analyzed histologically. Result：The apical tissue of rat molar root grew tooth root tip-like structure. Conclusion： The apical tissue of tooth root has the capability of forming tooth root and periodontal tissue.