Fluoride release from and tensile bond strength of Ketac-Fil and Ketac-Silver to enamel and dentin.
Fluoride release from and tensile bond strength of Ketac-Fil and Ketac-Silver to enamel and dentin.
复制标题
Ketac-Fil 和 Ketac-Silver 与牙釉质和牙本质的氟化物释放量以及拉伸粘合强度。
DOI：
10.1016/s0109-5641(86)80035-5
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
Bradley,EL
中科院分区：
文献类型：
--
作者：
Thornton,JB;Retief,DH;Bradley,EL
银增强玻璃离子水门汀最近已上市。本研究的目的是分别测定Ketac-Fil（一种传统的）和Ketac-Silver（一种银增强玻璃离子粘固剂）与牙釉质和牙本质的氟化物（F）释放和拉伸粘结强度（TBS）。为了测定F释放，从每种材料制备6个直径为20 mm、厚为1.5 mm的圆盘，并将其悬浮在50 ml玻璃蒸馏水中24小时。用50 ml TISAB洗涤圆盘，并用电测量法测定氟化物浓度。这些程序连续重复14天。分别测定Ketac-Fil对牙釉质（A）和牙本质（B）的TBS以及Ketac-Silver对牙釉质（C）和牙本质（D）的TBS。每个程序制备15个试样。将试样在37°C的水中储存24小时。然后将试样安装在Instron机器中，并以0.02英寸的十字头速度经受拉伸载荷。分钟-1。计算结合强度并以MN.m−2表示。在5%的显著性水平下，通过ANOVA和邓肯多重范围检验分析数据。Ketac-Fil仅释放显著更多的F（μg F）。mm-2，在前7天内比Ketac-Silver高。获得以下拉伸粘合强度（MN.m−2）：A：2.3±1.6; B：2.0 ±2.3; C：1.2±1.7; D：0.5±1.3。D组的粘结强度显著低于A组和B组，但与C组无显著差异。在玻璃离子水门汀中加入银会降低氟化物的释放量和与牙本质的粘结强度。
Silver-reinforced glass ionomer cements have recently become commercially available. The purpose of this study was to determine the fluoride (F) release from, and the tensile bond strength (TBS) of Ketac-Fil, a conventional, and Ketac-Silver, a silver-reinforced glass ionomer cement, to enamel and dentin, respectively. To determine F release, 6 discs, 20 mm in diameter and 1.5 mm thick, were prepared from each material, and suspended in 50 ml glass distilled water for 24 h. The discs were washed with 50 ml TISAB and the fluoride concentrations determined electrometrically. These procedures were repeated for 14 consecutive days. The TBS of Ketac-Fil to enamel (A) and dentin (B) and of Ketac-Silver to enamel (C) and dentin (D), respectively, were determined. Fifteen test specimens were prepared with each procedure. The test specimens were stored in water at 37°C for 24 h. The test specimens were then mounted in an Instron machine and subjected to a tensile load at a cross-head speed of 0.02 inch. min−1. The bond strengths were calculated and expressed in MN.m−2. The data were analyzed by ANOVA and Duncan's multiple range test at the 5% level of significance. Ketac-Fil only released significantly more F (μg F. mm−2 during the first 7 days than Ketac-Silver. The following tensile bond strengths (MN.m−2) were obtained: A: 2.3±1.6; B: 2.0 ±2.3; C: 1.2±1.7; D: 0.5±1.3. The bond strengths of D were significantly lower than those of A and B but not significantly different from C. The addition of silver to a glass ionomer cement reduced the fluoride release and the bond strength to dentin.