Effect of root surface alterations on periodontal healing. I. Surgical denudation.
Effect of root surface alterations on periodontal healing. I. Surgical denudation.
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牙根表面改变对牙周愈合的影响。
DOI：
10.1111/j.1600-051x.1982.tb02104.x
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发表时间：
1982
影响因子：
6.7
通讯作者：
A. Polson
中科院分区：
文献类型：
--
作者：
M. Proye;A. Polson
本研究旨在探讨根面剥脱对牙周愈合的影响。取4只松鼠猴的12颗牙齿，通过根面刨平术剥除冠状面的结缔组织纤维和牙骨质后再植。再植时间表在再植后1、3、7和21天提供了3颗牙进行组织学分析。再植后1天，在牙根表面和附着于牙槽骨的剩余牙周纤维之间插入了一个纤维蛋白缠结红细胞和炎性细胞的区域。上皮细胞沿着裸露的牙根迅速迁移，3天时已到达牙槽嵴，7天时已进入韧带间隙。在21天，上皮细胞在根器械的顶端极限，这对应于根表面上附着的结缔组织纤维的水平。在裸露的牙根表面上没有观察到新的结缔组织附着的证据。结论：根面纤维缺失导致上皮细胞向根尖迁移，阻碍了新结缔组织附着的形成。
The present study was undertaken to evaluate the effect of root surface denudation on periodontal healing. Twelve teeth, distributed in four squirrel monkeys, were extracted and reimplanted after surgically denuding the coronal root surface of connective tissue fibers and cementum by root planing. The reimplantation schedule provided three teeth for histologic analysis at 1, 3, 7 and 21 days after reimplantation. One day after reimplantation a zone of fibrin enmeshing erythrocytes and inflammatory cells was interposed between th root surface and the remaining periodontal fibers attached to the alveolar bone. Epithelium migrated rapidly along the denuded root, had reached the alveolar crest at 3 days, and was within the ligament space at 7 days. At 21 days, the epithelium was at the apical limit of root instrumentation, which corresponded to the level of attached connective tissue fibers on the root surface. No evidence of new connective tissue attachment was observed on the denuded root surface. It was concluded that the absence of fibers on the root surface resulted in apical migration of the epithelium, and precluded formation of new connective tissue attachment.