H after dressing split reduction of number fade of staining of the CGRP IR nerve fibers were found in the dental pulps in the toadpoison group . But there were no obvious changes in cocaine group .

封 药4h， 蟾 毒组 牙髓 内CGRP－IR神经纤维明显断裂、数量减少、染色 变 浅，而可卡因组则无明显变化。

Methods : Dental pulp of 36 teeth in 3 dogs was exposed by operation and then direct dressing with toadpoison paste or arsenic paste was performed .

方法：3只狗36个牙暴露牙髓后直接 覆盖 蟾 毒或砷剂，在1、 2 、6 、 24h后处死狗。

The effects of toadpoison and arsenic on the ultrastructure of dental pulp in dog

蟾 毒与砷剂对狗牙髓超微结构 改变的比较研究

Objective : To observe the dynamic changes of CGRP IR nerve fibers in dog dental pulp after treatment with direct dressing of toadpoison paste .

目的：观察狗牙髓直接 封 蟾 毒后牙髓内降钙素基因相关肽 免疫 反应 阳性 （ 简称CGRP－IR）神经纤维的动态变化。