氧化锆底漆提高牙科氧化锆的抗剪粘接强度。
Zirconia Primers Improve the Shear Bond Strength of Dental Zirconia.
机构信息
University Hospital for Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, Austria.
University Hospital for Cranio-Maxillofacial and Oral Surgery, Medical University of Innsbruck, Austria.
出版信息
J Prosthodont. 2020 Jan;29(1):62-68. doi: 10.1111/jopr.13013. Epub 2019 Jan 22.
PURPOSE
Various resin cements and priming agents are available for adhesive luting of zirconia restorations. The purpose of this study was to investigate how cement type and priming protocol affect the shear bond strength on zirconia ceramics.
MATERIALS AND METHODS
Yttria-stabilized tetragonal zirconia polycrystalline ceramic cylinders were bonded to flat zirconia ceramic surfaces using 7 commercially available resin cements. Ten specimens of each cement group were pretreated with a universal primer, and 10 specimens per group were bonded without pretreatment. In addition, 10 specimens per group were pretreated with system-specific zirconia primers, which were available for 3 cements. Altogether, 170 bonded specimens were water-stored, thermal-cycled, and then submitted to shear bond strength tests. The shear bond strength and the fracture types were documented. Differences in shear bond strengths were assessed using 2-way ANOVA with post-hoc test (α = 0.05). A point-biserial correlation was run between the fracture patterns and the shear bond strengths.
RESULTS
The mean shear bond strengths of cements in the unprimed group showed large variations between 2.52 ± 3.01 (mean ± SD) MPa and 33.15 ± 7.35 MPa. Pretreating the specimens with a universal primer improved the shear bond strengths significantly in all groups (p < 0.05) with a range of 21.80 ± 12.51 to 57.20 ± 11.40 MPa. The system-specific primers also improved the shear bond strength significantly, compared to the unprimed group (p < 0.01); however, only one system-specific primer achieved a shear bond strength superior to the universal primer (p < 0.01). There was also a statistical correlation between the fracture type and the shear bond strength (p < 0.0005), with cohesively fractured specimens showing higher shear bond strengths (37.24 ± 19.87 MPa) than adhesively fractured specimens (23.10 ± 17.65 MPa) (p < 0.001).
CONCLUSION
Using universal primer can enhance the maximal shear bond strength of zirconia.
目的
有多种树脂水门汀和底涂剂可用于氧化锆修复体的黏结。本研究旨在探讨黏结剂类型和预处理方法对氧化锆陶瓷剪切黏结强度的影响。
材料与方法
使用 7 种市售树脂水门汀将钇稳定四方氧化锆多晶陶瓷圆柱体黏结到平面氧化锆陶瓷表面。每组 10 个试件用通用底漆预处理，每组 10 个试件不预处理。此外，每组 10 个试件用系统专用的氧化锆底漆预处理，该底漆适用于 3 种水门汀。共 170 个黏结试件经水储存、热循环后进行剪切黏结强度测试。记录剪切黏结强度和断裂类型。采用 2 因素方差分析（α=0.05）评估剪切黏结强度的差异。对断裂模式和剪切黏结强度进行点双序相关分析。
结果
未预处理组中各水门汀的平均剪切黏结强度差异较大，范围为 2.52±3.01（均值±标准差）MPa 至 33.15±7.35 MPa。所有组经通用底漆预处理后，剪切黏结强度均显著提高（p<0.05），范围为 21.80±12.51 MPa 至 57.20±11.40 MPa。与未预处理组相比，系统专用底漆也显著提高了剪切黏结强度（p<0.01）；然而，只有一种系统专用底漆的剪切黏结强度优于通用底漆（p<0.01）。断裂类型与剪切黏结强度之间也存在统计学相关性（p<0.0005），黏结性断裂的试件剪切黏结强度（37.24±19.87 MPa）显著高于黏附性断裂的试件（23.10±17.65 MPa）（p<0.001）。
结论
使用通用底漆可以提高氧化锆的最大剪切黏结强度。
Zotero 插件