Shear bond strength of veneering porcelain to zirconia: Effect of surface treatment by CNC-milling and composite layer deposition on zirconia
Shear bond strength of veneering porcelain to zirconia: Effect of surface treatment by CNC-milling and composite layer deposition on zirconia
复制标题
贴面瓷与氧化锆的剪切结合强度：cnc铣削和复合层沉积表面处理对氧化锆的影响
DOI：
10.1016/j.jmbbm.2016.03.015
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发表时间：
2016-07-01
影响因子：
3.9
通讯作者：
Henriques, B.
中科院分区：
文献类型：
--
作者：
Santos, R. L. P.;Silva, F. S.;Henriques, B.
目的：方法：采用四种不同的氧化锆-瓷界面结构，分别为：RZ -瓷与粗糙氧化锆基体（n=16）、PZ-瓷与表面有孔氧化锆基体（n=16）、PZ-瓷与表面无孔氧化锆基体（n=16）、PZ -瓷与表面有孔氧化锆基体（n=16）RZI -在贴面瓷和粗糙氧化锆基质之间应用复合夹层（n=16）; PZI -在瓷和经CNC铣削处理的氧化锆基质之间应用复合夹层（n=16）。复合中间层由氧化锆颗粒增强瓷（30%，vol%）组成。测定了陶瓷复合材料的力学性能。使用万能试验机以0.5 mm/min进行剪切粘结强度试验。用FEG-SEM/EDS对断裂试样和未试验试样的界面进行了观察。采用Shapiro-Wilk检验对数据进行分析，以检验正态性假设。使用单向ANOVA和Tukey HSD多重比较检验比较剪切粘结强度结果（α =0.05）。结果：PZ（100 +/- 15 MPa）和RZI（96 +/- 11 MPa）样本的剪切粘结强度高于RZ（对照组）样本记录的剪切粘结强度（89 +/- 15 MPa），但不显著（p>0.05）。PZI试样的剪切粘结强度值最高（138 +/- 19 MPa），相对于RZ试样显著提高了55%（p
Objectives: The purpose of this study was to evaluate the shear bond strength of veneering feldspathic porcelain to zirconia substrates modified by CNC-milling process or by coating zirconia with a composite interlayer.Methods: Four types of zirconia-porcelain interface configurations were tested: RZ - porcelain bonded to rough zirconia substrate (n=16); PZ - porcelain bonded to zirconia substrate with surface holes (n=16); RZI - application of a composite interlayer between the veneering porcelain and the rough zirconia substrate (n=16); PZI - application of a composite interlayer between the porcelain and the zirconia substrate treated by CNC-milling (n=16). The composite interlayer was composed of zirconia particles reinforced porcelain (30%, vol%). The mechanical properties of the ceramic composite have been determined. The shear bond strength test was performed at 0.5 mm/min using a universal testing machine. The interfaces of fractured and untested specimens were examined by FEG-SEM/EDS. Data was analyzed with Shapiro-Wilk test to test the assumption of normality. The one-way ANOVA followed by Tukey HSD multiple comparison test was used to compare shear bond strength results (alpha=0.05).Results: The shear bond strength of PZ (100 +/- 15 MPa) and RZI (96 +/- 11 MPa) specimens were higher than that recorded for RZ (control group) specimens (89 +/- 15 MPa), although not significantly (p>0.05). The highest shear bond strength values were recorded for PZI specimens (138 +/- 19 MPa), yielding a significant improvement of 55% relative to RZ specimens (p