Regional variation in root dentinal tubule infection by Streptococcus gordonii
Regional variation in root dentinal tubule infection by Streptococcus gordonii
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DOI：
10.1016/s0099-2399(96)80261-5
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发表时间：
1996-06-01
影响因子：
4.2
通讯作者：
Love, RM
中科院分区：
文献类型：
--
作者：
Love, RM
本研究的目的是探讨细菌对人牙根不同部位牙本质小管的侵袭模式。从以标准方式制备其根管的单根牙齿获得样本，然后通过根管纵向切片根，并对所得样本进行化学处理以去除玷污层，将样本浸入戈登链球菌悬浮液中3周，然后制备用于组织学分析，检查来自颈、根中和根尖区域的切片，颈部和根中部区域的细菌感染模式相似，其特征为细菌穿透深度达200 μ m的重度感染。根尖牙本质的侵入有显著差异，轻度感染，最大渗透为60 μ m。
The purpose of this study was to investigate the pattern of bacterial invasion of dentinal tubules at different regions in human roots. Specimens were obtained from single-rooted teeth that had their root canals prepared in a standard manner, Roots were then sectioned longitudinally through the canals and the resulting specimens chemically treated to remove the smear layers, Specimens were immersed in a suspension of Streptococcus gordonii for 3 weeks and then prepared for histological analysis, Sections from the cervical, midroot, and apical areas were examined, The pattern of bacterial infection of the cervical and midroot areas was similar, characterized as a heavy infection with bacteria penetrating as deep as 200 mu m. Invasion of the apical dentin was significantly different, with a mild infection and maximum penetration of 60 mu m.