DENTIN PERMEABILITY - EFFECTS OF SMEAR LAYER REMOVAL
DENTIN PERMEABILITY - EFFECTS OF SMEAR LAYER REMOVAL
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DOI：
10.1016/0022-3913(81)90243-2
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发表时间：
1981-01-01
影响因子：
4.6
通讯作者：
KEHL, T
中科院分区：
文献类型：
--
作者：
PASHLEY, DH;MICHELICH, V;KEHL, T
这项研究的结果得出以下结论： 1. 在很短的时间间隔内使用稀（6%）柠檬酸可以连续去除人牙本质上的污迹层。 2. 酸蚀仅需 5 秒即可去除大部分污迹层并暴露牙本质小管的孔口。 3.用6%柠檬酸酸蚀时牙本质渗透性迅速增加，仅酸蚀15秒后就达到最大值。 4. 在修复过程中，牙本质上会产生涂抹层，从而建立起保护性扩散屏障。通过酸蚀去除污迹层会增加牙本质的渗透性，在某些情况下，这必须被视为一种不利因素。
The results of this study permit the following conclusions: 1. The use of dilute (6%) citric acid for very short time intervals permits sequential removal of the smear layer on human dentin. 2. Acid-etching for as little as 5 seconds removes much of the smear layer and exposes the orifices of dentinal tubules. 3. Dentin permeability increased rapidly during acid-etching with 6% citric acid, reaching a maximum value after only 15 seconds of etching. 4. The production of a smear layer on dentin during restorative procedures establishes a protective diffusion barrier. Removal of the smear layer by acid-etching increases the permeability of dentin which, under some conditions, must be regarded as a liability.