Erdoğdu Meryem, Demirel Mehmet Gökberkkaan, Mohammadi Reza, Güntekin Neslihan
Department of Prosthodontics Dental Therapy, Faculty of Dentistry, Necmettin Erbakan University, 42090 Konya, Turkey.
Faculty of Dentistry, Necmettin Erbakan University, 42090 Konya, Turkey.
J Pers Med. 2024 Sep 28;14(10):1040. doi: 10.3390/jpm14101040.
The aim of this study was to evaluate the influence of abutment angulation, types, and bone quality on fatigue performance in dental implant systems.
Three-dimensional models of maxillary 3-unit fixed implant-supported prostheses were analyzed. Abutments with different angles and types were used. Healthy bone (Hb) and resorbed bone (Rb) 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 stress distribution and fatigue performance were then evaluated considering the types of bone used and the angles of the three different abutments. The simulation aspect of the research was carried out utilizing Abaqus 2020 software.
In all models, fatigue strengths in healthy bone were higher than in resorbed bone. Maximum stress levels were seen in models with angled implants. In almost all models with resorbed bone, fatigue performances were slightly lower.
Increasing the abutment angle has been shown to increase stress levels and decrease fatigue performance in the adjacent bone and along the implant-abutment interface. In general, implants applied to healthy bone were found to have a higher success rate. It has also been suggested that multiunit abutments have beneficial effects on stress distribution and fatigue performance compared to resin cemented abutments. The type or angle of abutment and the quality of the bone can lead to biomechanical changes that affect the force distribution within the bone structure surrounding the implant. Clinicians can influence the biomechanical environment of the implant site by varying the abutment angle and type to suit the condition of bone health, potentially affecting the long-term success of implant treatment.
本研究旨在评估基台角度、类型及骨质对牙种植系统疲劳性能的影响。
分析上颌3单位种植固定修复体的三维模型。使用不同角度和类型的基台。采用健康骨（Hb）和吸收骨（Rb）。在种植体上以30度的特定角度从腭侧向颊侧斜向施加150 N的力。然后考虑所使用的骨类型和三种不同基台的角度评估应力分布和疲劳性能。利用Abaqus 2020软件进行研究的模拟方面。
在所有模型中，健康骨中的疲劳强度高于吸收骨。有角度种植体的模型中观察到最大应力水平。在几乎所有吸收骨模型中，疲劳性能略低。
已表明增加基台角度会增加相邻骨和种植体 - 基台界面处的应力水平并降低疲劳性能。一般来说，应用于健康骨的种植体成功率更高。还表明与树脂粘结基台相比，多单位基台对应力分布和疲劳性能有有益影响。基台的类型或角度以及骨质量可导致生物力学变化，从而影响种植体周围骨结构内的力分布。临床医生可通过改变基台角度和类型以适应骨健康状况来影响种植体部位的生物力学环境，这可能会影响种植治疗的长期成功率。
