Department of Conservative Dentistry, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia.
Oral Health Department, Faculty of Dentistry, Universidad Nacional de Colombia, Bogotá, Colombia.
F1000Res. 2022 Jul 18;11:798. doi: 10.12688/f1000research.122108.1. eCollection 2022.
Polymer infiltrated ceramic networks, or hybrid ceramics, are a combination of infiltrating polymerizable organic monomers into a pre-sintered porous ceramic matrix. In addition to having good mechanical properties, the polymer infiltrated ceramic network must comply with the possibility of adequate bonding to the resinous cement. The surface conditioning of this hybrid material must be carefully considered due to its organic composition and ceramic network. The purpose of this research is to evaluate the effect of hydrofluoric acid and a self-etching ceramic primer, under two different application times, on the bond strength of a polymer infiltrated ceramic network. Blocks of a polymer infiltrated ceramic network were cut to obtain sheets, and these were randomized into five groups. For the group termed AAS, airborne-particle abrasion with Al O (aluminum oxide) of 50µm was used. For groups HF2 and HF6, hydrofluoric acid was used for 20 and 60 seconds respectively, and for the groups MB2 and MB6, a self-etch ceramic primer was applied for 20 and 60 seconds respectively. A silane was applied to the groups AAS, HF2, and HF6 after the treatment. After 24-hour storage in distilled water, a micro-shear bond strength test was performed using a universal mechanical testing machine. All samples were evaluated in a stereomicroscope at 40x and 50x to determine the type of failure. The highest and lowest values of bond strength were reported by groups MB6 and AAS, respectively. Groups HF2, HF6, MB6, and MB2 did not report statistically significant differences. The predominant failure pattern was a mixed failure. With the limitations of the present investigation, the treatments of self-etching ceramic primer and hydrofluoric acid followed by silane were reported to be statistically equal at 20 and 60 seconds.
聚合物渗透陶瓷网络，或称为混合陶瓷，是将可聚合的有机单体渗透到预烧结的多孔陶瓷基质中的一种组合。除了具有良好的机械性能外，聚合物渗透陶瓷网络还必须符合与树脂水泥充分结合的可能性。由于其有机成分和陶瓷网络，这种混合材料的表面处理必须仔细考虑。本研究的目的是评估氢氟酸和自酸蚀陶瓷底漆在两种不同应用时间下对聚合物渗透陶瓷网络结合强度的影响。 将聚合物渗透陶瓷网络的块切割成薄片，并将其随机分为五组。对于 AAS 组，使用粒径为 50µm 的氧化铝进行空气喷砂处理。对于 HF2 和 HF6 组，分别使用氢氟酸处理 20 秒和 60 秒，对于 MB2 和 MB6 组，分别使用自酸蚀陶瓷底漆处理 20 秒和 60 秒。AAS、HF2 和 HF6 组在处理后涂覆硅烷。在蒸馏水中储存 24 小时后，使用万能机械试验机进行微剪切结合强度测试。所有样品在立体显微镜下以 40x 和 50x 进行评估，以确定失效类型。 结合强度的最高和最低值分别由 MB6 和 AAS 组报告。HF2、HF6、MB6 和 MB2 组之间没有统计学差异。主要失效模式为混合失效。 在本研究的限制范围内，报告表明自酸蚀陶瓷底漆和氢氟酸处理后再用硅烷处理在 20 秒和 60 秒时具有统计学等效性。
