PULPAL CHANGES IN REPLANTED AND AUTOTRANSPLANTED APICOECTOMIZED MATURE TEETH OF DOGS
PULPAL CHANGES IN REPLANTED AND AUTOTRANSPLANTED APICOECTOMIZED MATURE TEETH OF DOGS
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DOI：
10.1016/s0300-9785(81)80020-8
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发表时间：
1981-01-01
期刊：
影响因子：
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通讯作者：
SKOGLUND, A
中科院分区：
文献类型：
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作者：
SKOGLUND, A
根尖切除术，在手术的时候进行了研究，以确定它是否影响再植和自体移植的成熟牙齿的牙髓的组织反应。该材料由来自6只成年狗的45颗牙齿组成。26颗牙在去除约1/4长度的牙根后再植或自体移植。19颗牙在没有根尖切除的情况下再植或自体移植。观察期分别为10、30和120天。将牙齿沿颊舌方向纵向切成7 μ m。切片用苏木精和伊红染色或根据货车Gieson或Brown和Brenn方法染色。再植牙与自体牙牙髓组织反应无差异。在根尖切除的牙齿，牙髓最初成为坏死，但修复发生在120天后，已达到髓角在14的15颗牙齿通过结缔组织的向内生长。术后在根管壁上形成了含细胞的硬组织，在某些牙齿中也在牙髓中心形成。19颗非根尖切除牙牙髓坏死，未发生修复。
Apicoectomy, performed at the time of the operation, was studied to determine whether it affects the tissue reactions of the pulp of replanted and autotransplanted mature teeth. The material consisted of 45 teeth from 6 adult dogs. Twenty-six teeth were replanted or autotransplanted after removal of about 1/4 of the length of the root. Nineteen teeth were replanted or autotransplanted without apicoectomy. The observation periods were 10, 30 and 120 days. The teeth were longitudinally sectioned at 7 .mu.m in a buccolingual direction. The sections were stained with hematoxylin and eosin or according to the van Gieson or Brown and Brenn methods. No difference was noted in the tissue reactions of the pulp of replanted and autotransplanted teeth. In the apicoectomized teeth the pulp initially became necrotic, but repair occurred through ingrowth of connective tissue that had reached the pulp horn in 14 of 15 teeth after 120 days. Cell-containing hard tissue had formed postoperatively on the root canal walls and in some teeth also centrally in the pulp. In the 19 nonapicoectomized teeth the pulp necrotized and repair did not occur.