APICAL DENTIN PERMEABILITY AND MICROLEAKAGE ASSOCIATED WITH ROOT END RESECTION AND RETROGRADE FILLING
APICAL DENTIN PERMEABILITY AND MICROLEAKAGE ASSOCIATED WITH ROOT END RESECTION AND RETROGRADE FILLING
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DOI：
10.1016/s0099-2399(06)80022-1
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发表时间：
1994-01-01
影响因子：
4.2
通讯作者：
TYAS, MJ
中科院分区：
文献类型：
--
作者：
GILHEANY, PA;FIGDOR, D;TYAS, MJ
本研究评估了在三个不同角度切除的根尖中放置不同深度的逆行充填物的根尖渗漏。用水力传导装置评估泄漏。根据根尖切除角度（与牙根长轴成0、30和45度）将牙齿分组，并在逆行充填深度（Ketac银）逐渐增加后确定根尖渗漏。增加逆行充填的深度显著降低根尖渗漏;随着斜面量的增加，渗漏也显著增加。根管充填材料周围的微渗漏和根管的渗透性对根管渗漏有显著影响。
This study evaluated the apical leakage associated with various depths of retrograde fillings placed in root apices which had been resected at one of three different angles. Leakage was assessed with a hydraulic conductance apparatus. Teeth were divided into groups corresponding to the angle of apical resection (0, 30, and 45 degrees to the long axis of the root) and apical leakage was determined following incremental increases in the depth of the retrograde filling (Ketac Silver). Increasing the depth of the retrograde filling significantly decreased apical leakage; there was also a significant increase in leakage as the amount of bevel increased. Both the permeability of resected apical dentin and microleakage around the retrograde filling material had a significant influence on apical leakage.