Lee Jung-Jin, Choi Jung-Yun, Seo Jae-Min
Department of Prosthodontics and Institute of Oral Bio-Science, School of Dentistry, Chonbuk National University, and Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Jeonju, Republic of Korea.
J Adv Prosthodont. 2017 Apr;9(2):130-137. doi: 10.4047/jap.2017.9.2.130. Epub 2017 Apr 6.
The purpose of this study was to evaluate the effect of nano-structured alumina surface coating on shear bond strength between Y-TZP ceramic and various dual-cured resin cements.
A total of 90 disk-shaped zirconia specimens (HASS CO., Gangneung, Korea) were divided into three groups by surface treatment method: (1) airborne particle abrasion, (2) tribochemicalsilica coating, and (3) nano-structured alumina coating. Each group was categorized into three subgroups of ten specimens and bonded with three different types of dual-cured resin cements. After thermocycling, shear bond strength was measured and failure modes were observed through FE-SEM. Two-way ANOVA and the Tukey's HSD test were performed to determine the effects of surface treatment method and type of cement on bond strength (<.05). To confirm the correlation of surface treatment and failure mode, the Chi-square test was used.
Groups treated with the nanostructured alumina coating showed significantly higher shear bond strength compared to other groups treated with airborne particle abrasion or tribochemical silica coating. Clearfil SA Luting showed a significantly higher shear bond strength compared to RelyX ARC and RelyX Unicem. The cohesive failure mode was observed to be dominant in the groups treated with nano-structured alumina coating, while the adhesive failure mode was prevalent in the groups treated with either airborne particle abrasion or tribochemical silica coating.
Nano-structured alumina coating is an effective zirconia surface treatment method for enhancing the bond strength between Y-TZP ceramic and various dual-cured resin cements.
本研究旨在评估纳米结构氧化铝表面涂层对Y-TZP陶瓷与各种双固化树脂水门汀之间剪切粘结强度的影响。
将总共90个圆盘状氧化锆标本（韩国江陵市哈斯公司）按表面处理方法分为三组：（1）空气颗粒研磨，（2）摩擦化学二氧化硅涂层，（3）纳米结构氧化铝涂层。每组分为三个亚组，每组十个标本，并与三种不同类型的双固化树脂水门汀粘结。热循环后，测量剪切粘结强度，并通过场发射扫描电子显微镜观察失效模式。进行双向方差分析和Tukey's HSD检验，以确定表面处理方法和水门汀类型对粘结强度的影响（<.05）。为了确认表面处理与失效模式的相关性，使用了卡方检验。
与采用空气颗粒研磨或摩擦化学二氧化硅涂层处理的其他组相比，采用纳米结构氧化铝涂层处理的组显示出显著更高的剪切粘结强度。Clearfil SA Luting显示出比RelyX ARC和RelyX Unicem显著更高的剪切粘结强度。在用纳米结构氧化铝涂层处理的组中，观察到内聚破坏模式占主导，而在采用空气颗粒研磨或摩擦化学二氧化硅涂层处理的组中，粘结破坏模式普遍存在。
纳米结构氧化铝涂层是一种有效的氧化锆表面处理方法，可增强Y-TZP陶瓷与各种双固化树脂水门汀之间的粘结强度。
