Lubauer Julia, Belli Renan, Lorey Tony, Max Stefanie, Lohbauer Ulrich, Zorzin José Ignacio
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Zahnklinik 1 - Zahnerhaltung und Parodontologie, Forschungslabor für dentale Biomaterialien, Glueckstrasse 11, 91054, Erlangen, Germany.
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Zahnklinik 1 - Zahnerhaltung und Parodontologie, Forschungslabor für dentale Biomaterialien, Glueckstrasse 11, 91054, Erlangen, Germany.
J Mech Behav Biomed Mater. 2022 Jul;131:105236. doi: 10.1016/j.jmbbm.2022.105236. Epub 2022 Apr 12.
The realization that the use of strength tests as a means to probe the bonding performance of adhesive systems to dental restorative materials suffers from inherent drawbacks has shifted efforts towards devising viable and valid fracture toughness test for that purpose. Here we introduce a new procedure to produce split-Chevron-Notched-Beam specimens that need not undergo sawing or notching after bonding, thus sparing the interface from pre-stresses. We evaluate the formal geometric factor considering the influence of the use of different materials having different elastic properties, and show that the results obtained fall within reasonable ranges measured by other established compliance calibrated methods. We demonstrate the application of this new approach for dentin-luting composite and zirconia-luting composite interfaces for different adhesive systems and pre-treatment procedures in order to probe the sensitivity of the method to different bond qualities.
认识到将强度测试作为探测粘结系统与牙科修复材料粘结性能的手段存在固有缺陷后，人们已将努力转向为此设计可行且有效的断裂韧性测试。在此，我们介绍一种生产劈裂人字形切口梁试样的新方法，该试样在粘结后无需进行锯切或切口，从而避免界面产生预应力。我们考虑了使用具有不同弹性特性的不同材料的影响来评估形式几何因子，并表明所获得的结果落在其他既定的柔度校准方法所测量的合理范围内。我们展示了这种新方法在不同粘结系统和预处理程序的牙本质粘结复合材料及氧化锆粘结复合材料界面中的应用，以探究该方法对不同粘结质量的敏感性。
