热循环和表面处理对杂化PICN陶瓷结合强度的影响。

Anggely Bayas Salinas, Alejandro Reascos Flores, Marcelo G Cascante-Calderón, Inés M Villacís Altamirano
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引用次数: 0

摘要

本研究评估了混合PICN陶瓷在经受5000次热循环前后的结合强度。picn在CAD/CAM口腔修复领域是一个很有前途的选择;然而,它们与硅烷和10-MDP等化学表面处理以及氢氟酸和喷砂等微力学处理的粘附行为尚不完全清楚。目的:比较不同表面工艺处理的杂化PICN陶瓷在热循环前后的结合强度。材料与方法:进行体外实验研究。制备了40片PICN陶瓷片,分为4组。每组接受特定的表面处理(喷砂或酸蚀)和不同的粘合技术(硅烷+粘合剂或仅粘合剂)。每片粘接直径为3mm的复合材料圆柱体,立即在万能试验机上测定抗剪强度,并在热循环一段时间后测定抗剪强度。统计学:数据采用方差分析和Tukey事后检验。所有统计数据均以95%置信区间进行分析。结果:喷砂组、硅烷组和万能胶组在立即和热循环后的附着力值最高(分别为16.3 MPa和11.2 MPa),氢氟酸蚀刻组和粘结剂组在立即和热循环后的附着力值最低(分别为8.6 MPa和5.4MPa)。结论:喷砂、硅烷和基于10- mdp的粘合剂处理的混合陶瓷的胶结确保了高的粘合值,即使在炎热潮湿的条件下老化。热循环显著降低了所有组的粘接强度,在不含硅烷的组中下降更为明显。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effect of thermocycling and surface treatments on the bond strength of a hybrid PICN ceramic.

Effect of thermocycling and surface treatments on the bond strength of a hybrid PICN ceramic.

Effect of thermocycling and surface treatments on the bond strength of a hybrid PICN ceramic.

This study evaluated the bond strength of a hybrid PICN ceramic before and after being subjected to 5000 cycles of thermocycling. PICNs are a promising alternative in the field of CAD/CAM dental restorations; however, their adhesive behavior with chemical surface treatments such as silane and 10-MDP, and micromechanical treatments such as hydrofluoric acid and sandblasting is not yet fully understood.

Aim: To compare the bond strength of a hybrid PICN ceramic treated with different surface protocols before and after a thermocycling process.

Materials and method: An in-vitro experimental study was conducted. Forty PICN ceramic slices were prepared and divided into four groups. Each group received a specific surface treatment (sandblasting or acid etching) and a different adhesive technique (silane + adhesive or adhesive only). Composite cylinders of 3 mm diameter mm were bonded to each slice, and shear strength was measured on a universal testing machine immediately, and after a period of thermocycling. Statistics: Data were analyzed by ANOVA followed by Tukey's post hoc test. All statistics were analyzed with a 95% confidence interval.

Results: The group subjected to sandblasting followed by silane and universal adhesive achieved the highest adhesion values, both immediately and after thermocycling (16.3 MPa and 11.2 MPa, respectively), and the group subjected to hydrofluoric acid etching and adhesive had the lowest values, both immediately and after thermocycling (8.6 MPa and 5.4MPa).

Conclusion: Cementation of a hybrid ceramic treated with sandblasting, silane and a 10-MDP-based adhesive ensures high bond values, even when aged under hot, humid conditions. Thermocycling significantly reduced the adhesive strength in all groups, the decrease being more noticeable in those that did not include silane.

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