空气颗粒喷砂处理方案和底涂剂对高透光性氧化锆陶瓷表面形貌和粘结强度的影响。

Effect of Air-Particle Abrasion Protocol and Primer on The Topography and Bond Strength of a High-Translucent Zirconia Ceramic.

机构信息

Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan.

Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation, School of Dentistry, Asahi University, Japan.

出版信息

J Prosthodont. 2022 Mar;31(3):228-238. doi: 10.1111/jopr.13372. Epub 2021 May 12.

DOI:10.1111/jopr.13372

PMID:33909938

Abstract

PURPOSE

To evaluate effect of air-particle abrasion protocol and primer on surface topography and bond strength of resin cement to high-translucent zirconia ceramics.

MATERIALS AND METHODS

Two hundred disk-shaped high-translucent zirconia specimens of 5Y-PSZ were prepared. The specimens were assigned to 5 groups in terms of particle type and air-particle abrasion pressure: (1) control, (2) alumina with 0.2 MPa-air pressure [AB-0.2], (3) alumina with 0.4 MPa-air pressure [AB-0.4], (4) glass beads with 0.2 MPa-air pressure [GB-0.2], and (5) glass beads with 0.4 MPa-air pressure [GB-0.4]. Two different primers 1% MDP (Experimental) and MDP-silane primer (Clearfil Ceramic Primer Plus) was also tested. Stainless steel rods were bonded to the 5Y-PSZ specimens with PANAVIA V5. For each group, the tensile bond strength (TBS) was measured after 24-hour water storage (n = 10) and after 5000 thermal-cycling (n = 10) at crosshead speed of 2 mm/min. The data were statistically analyzed using Weibull analysis. Surface roughness (Sa) was measured using a 3D-Laser Scanning Confocal Microscope (n = 5) and analyzed by t-test with Bonferroni correction. Surface topography using scanning electron microscopy (SEM) and surface elemental analysis using energy dispersion spectroscopy (EDX), and cross-section SEM at the interface with composite cement were also investigated.

RESULTS

In MDP-silane groups, the highest TBS was observed in AB-0.4 after 24 hours and GB-0.4 after thermal-cycling (p < 0.05). In MDP groups, AB groups resulted in the significantly higher TBS than GB groups (p < 0.05). AB-0.4 group showed the highest Sa value compared to all groups (p < 0.005), meanwhile GB groups did not show different Sa compared to control (p > 0.005).

CONCLUSION

Air-abrasion with different particle and blasting pressure can improve bonding to zirconia with proper primer selection. Particularly, glass beads abrasion followed by MDP-silane primer and alumina abrasion followed by MDP primer alone provided stable bond strength of resin cement to high-translucent zirconia after aging. High-translucent zirconia abraded with glass beads achieves a desirable bonding performance without creating surface microcracks which may hinder zirconia's mechanical properties.

摘要

目的

评估空气颗粒喷砂protocol 和 primer 对高透光性氧化锆陶瓷的树脂水泥表面形貌和结合强度的影响。

材料与方法

制备 200 个 5Y-PSZ 圆盘状高透光性氧化锆试件。根据颗粒类型和空气颗粒喷砂压力，将试件分为 5 组：（1）对照组，（2）0.2 MPa 空气压力下的氧化铝 [AB-0.2]，（3）0.4 MPa 空气压力下的氧化铝 [AB-0.4]，（4）0.2 MPa 空气压力下的玻璃珠 [GB-0.2]，和（5）0.4 MPa 空气压力下的玻璃珠 [GB-0.4]。还测试了两种不同的 primer 1% MDP（实验）和 MDP-硅烷 primer（Clearfil Ceramic Primer Plus）。用 PANAVIA V5 将不锈钢棒粘结到 5Y-PSZ 试件上。对于每组，在 24 小时水储存后（n = 10）和 5000 次热循环后（n = 10）以 2mm/min 的十字头速度测量拉伸结合强度（TBS）。使用 Weibull 分析对数据进行了统计分析。使用三维激光共聚焦显微镜（n = 5）测量表面粗糙度（Sa），并用具有 Bonferroni 校正的 t 检验进行分析。使用扫描电子显微镜（SEM）进行表面形貌观察，使用能量色散光谱法（EDX）进行表面元素分析，并在复合材料水泥界面处进行横截面 SEM 观察。

结果

在 MDP-硅烷组中，24 小时后 AB-0.4 和热循环后 GB-0.4 观察到最高的 TBS（p < 0.05）。在 MDP 组中，AB 组的 TBS 明显高于 GB 组（p < 0.05）。与所有组相比，AB-0.4 组的 Sa 值最高（p < 0.005），而 GB 组与对照组的 Sa 值没有差异（p > 0.005）。

结论

选择合适的 primer 进行不同颗粒和喷砂压力的空气喷砂可以改善氧化锆的粘结性能。特别是，玻璃珠喷砂后用 MDP-硅烷 primer，氧化铝喷砂后只用 MDP primer 可以为高透光性氧化锆提供稳定的树脂水泥结合强度，经过老化处理后也是如此。用玻璃珠喷砂处理高透光性氧化锆可以获得理想的粘结性能，而不会产生可能影响氧化锆机械性能的表面微裂纹。