The effect of different surface treatments on roughnessand bond strength in low fusing ceramics
The effect of different surface treatments on roughnessand bond strength in low fusing ceramics
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DOI：
10.1007/s10103-010-0806-9
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发表时间：
2011-09-01
影响因子：
2.1
通讯作者：
Ozturk, Bora
中科院分区：
文献类型：
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作者：
Kara, Haluk Baris;Ozturk, A. Nilgun;Ozturk, Bora
本研究的目的是评估不同表面处理（空气磨损、酸蚀刻和激光照射）对低熔点陶瓷表面粗糙度和结合强度的影响。根据制造商的说明制备了 36 个低熔点陶瓷圆盘（Finesse，Ceramco）（直径 10 毫米，厚度 2 毫米）。将样品分为三组（n = 12），并进行以下处理：用氧化铝颗粒（50μm）空气磨蚀，用5％HF酸蚀和Nd：YAG激光照射（距离：1mm，100mJ，20Hz，2W和141.54J/cm（2））。通过轮廓测定法测定表面粗糙度 (R-a) 后，用扫描电子显微镜 (SEM) 检查样品。使用聚四氟乙烯管将粘合水泥（Clearfil Esthetic Cement）粘合到陶瓷样本上。水储存24 h后，使用万能试验机以十字头速度1 mm/min进行剪切粘结强度测试。使用双向方差分析 (ANOVA) 和 Tukey HSD 检验 (alpha = .05) 对数据进行分析。双向方差分析表明表面粗糙度受到表面处理的显着影响 (p < .001)。 Tukey 诚实显着差异 (HSD) 表明，空气磨损组的平均值显着高于其他组 (p < .05)。剪切粘合强度受表面处理的显着影响 (p < .001)。 Tukey HSD 表明空气磨损组的平均值显着高于其他组 (p < .05)。酸蚀刻组和激光照射组之间没有发现显着差异 (p > .05)。与其他组的图像相比，激光照射表面的SEM图像显得相对平滑。与酸蚀和激光照射方法相比，低熔瓷表面的空气磨损可有效提高粘合强度。
The aim of this study was to evaluate the influence of different surface treatments (air abrasion, acid etching, and laser irradiation) on the surface roughness and bond strength of a low fusing ceramic. Thirty-six discs of low fusing ceramic (Finesse, Ceramco) were prepared (10 mm in diameter and 2 mm in thickness) according to the manufacturer's instructions. Specimens were divided into three groups (n = 12), and the following treatments were performed: Air abrasion with alumina particles (50 mu m), acid etching with 5% HF and Nd:YAG laser irradiation (distance: 1 mm, 100 mJ, 20 Hz, 2 W, and 141.54 J/cm(2)). Following determination of surface roughness (R-a) by profilometry, specimens were examined with scanning electron microscopy (SEM). The luting cement (Clearfil Esthetic Cement) was bonded to the ceramic specimens using Teflon tubes. After 24 h of water storage, shear bond strength test was performed using a universal testing machine at a crosshead speed of 1 mm/min. The data were analyzed with two-way analysis of variance (ANOVA) and Tukey HSD tests (alpha = .05). Two-way ANOVA indicated that surface roughness was significantly affected by surface treatments (p < .001). Tukey honestly significant difference (HSD) indicated that the air abrasion group had a significantly higher mean value (p < .05) than the other groups. Shear bond strength was significantly affected by surface treatments (p < .001). Tukey HSD indicated that the air abrasion group had a significantly higher mean value (p < .05) than the other groups. No significant difference was found between the acid-etching and laser-irradiation groups (p > .05). The SEM image of the laser irradiation surface appeared to be relatively smooth as compared to the images of other the groups. Air abrasion of low-fusing porcelain surfaces was effective in improving the bond strength as compared to the acid-etching and laser-irradiation methods.