Department of Prosthodontics, Faculty of Dentistry, Necmettin Erbakan University, 42090 Konya, Türkiye.
Faculty of Dentistry, Necmettin Erbakan University, 42090 Konya, Türkiye.
Medicina (Kaunas). 2024 Sep 6;60(9):1463. doi: 10.3390/medicina60091463.
: This study uses finite element analysis to evaluate the impact of abutment angulation, types, and framework materials on the stress distribution and fatigue performance of dental implant systems. : Three-dimensional models of maxillary three-unit fixed implant-supported prostheses were analyzed. Abutments with different angles and types were used. Two different framework materials were used. Conducted on implants, a force of 150 N was applied obliquely, directed from the palatal to the buccal aspect, at a specific angle of 30 degrees. The distribution of stress and fatigue performance were then assessed, considering the types of restoration frameworks used and the angles of the abutments in three distinct locations. The simulation aspect of the research was carried out utilizing Abaqus Software (ABAQUS 2020, Dassault Systems Simulation Corp., Johnston, RT, USA). : In all models, fatigue strengths in the premolar region were higher than in the molar region. Maximum stress levels were seen in models with angled implants. In almost all models with the zirconia framework, fatigue performance was slightly lower. : According to the findings of this study, it was concluded that the use of metal-framework multi-unit restorations with minimum angulation has significant positive effects on the biomechanics and long-term success of implant treatments.
本研究采用有限元分析，评估基台角度、类型和支架材料对牙种植体系统的应力分布和疲劳性能的影响。分析了上颌三个单位固定种植体支持式修复体的三维模型。使用了不同角度和类型的基台。使用了两种不同的支架材料。在种植体上施加 150 N 的斜向力，从腭侧指向颊侧，角度为 30 度。然后评估了在三种不同位置考虑修复体框架类型和基台角度时的应力分布和疲劳性能。研究的模拟方面利用 Abaqus 软件（ABAQUS 2020， Dassault Systems Simulation Corp.，Johnston，RT，USA）进行。在所有模型中，前磨牙区域的疲劳强度均高于磨牙区域。在带有角度植入物的模型中观察到最大的应力水平。在几乎所有带有氧化锆框架的模型中，疲劳性能略低。根据本研究的结果，得出结论，使用最小角度的金属框架多单位修复体对种植体治疗的生物力学和长期成功具有显著的积极影响。
