Effects of pre- or post-application of calcium chloride on occluding ability of potassium oxalate for the treatment of dentin hypersensitivity.
Effects of pre- or post-application of calcium chloride on occluding ability of potassium oxalate for the treatment of dentin hypersensitivity.
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发表时间：
2005-04
影响因子：
1.4
通讯作者：
T. Suge;A. Kawasaki;K. Ishikawa;T. Matsuo;S. Ebisu
中科院分区：
文献类型：
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作者：
T. Suge;A. Kawasaki;K. Ishikawa;T. Matsuo;S. Ebisu
目的观察30%草酸钾处理牙本质小管时，用1-6 mol/L CaCl2溶液补钙是否能增强牙本质小管的闭塞能力。方法应用30%草酸钾溶液前后分别用氯化钙溶液（1 ~ 6 mol/L）涂抹牙本质盘。采用扫描电镜（SEM）观察和牙本质通透性测定评价草酸钾处理后牙本质的咬合能力。此外，用粉末x射线衍射仪（XRD）分析了草酸钾与氯化钙混合形成的沉淀物的组成。结果扫描电镜观察发现，草酸钾处理前后氯化钙溶液均能使牙本质小管完全均匀地被沉淀物堵塞。然而，在草酸钾预处理之前，用氯化钙预处理牙本质小管的沉淀深度较浅。虽然两组牙本质的渗透性都大大降低，但使用氯化钙和未使用氯化钙的样品之间没有明显差异。
PURPOSE To evaluate whether calcium ion supply using 1-6 mol/L CaCl2 solution could enhance the occluding ability of dentin tubules with 30% potassium oxalate treatment. METHODS Calcium chloride solution (1-6 mol/L) was applied to dentin disks before or after application of 30% potassium oxalate solution. Occluding ability after potassium oxalate treatment was evaluated with scanning electron microscopic (SEM) observation and measurement of dentin permeability. In addition, the composition of the precipitate formed when mixing potassium oxalate and calcium chloride was analyzed with a powder x-ray diffractometer (XRD). RESULTS SEM observations revealed that the dentin tubules were occluded homogeneously and completely with the precipitate when calcium chloride solution was applied before or after potassium oxalate treatment. However, the depth of the precipitate in dentin tubules from the dentin surface became shallower when pre-treated with calcium chloride before potassium oxalate. Although dentin permeability was greatly reduced in both groups, no significant difference could be observed between samples with and without calcium chloride application.