三个NiTi旋转系统的多模式评估:临床模拟,机械测试和有限元分析
Jesus A Aparicio1, Pedro M Mendez S2, Giulia Malvicini3
1Graduate Endodontics Program, School of Dentistry, Universidad Catolica de Santiago de Guayaquil (UCSG), Guayaquil 090615, Ecuador.
Dentistry journal
|August 27, 2025
概括
与BlueShaper Pro和Blue旋转系统相比,BlueShaper Gold的耐用性和耐疲劳性更强. 合金成分对仪器的性能产生重大影响,即使设计相同.
科学领域:
- 牙周内科
- 材料科学
背景情况:
- 尼基- (NiTi) 旋转仪器在内牙术中至关重要.
- 合金成分的变化会影响仪器的性能和寿命.
- 了解临床和机械压力下的仪器行为对于安全有效的内牙治疗至关重要.
研究的目的:
- 为了比较三个NiTi旋转系统的临床耐用性,机械性能和应力行为:BlueShaper (蓝色),BlueShaper Pro (双线) 和BlueShaper Gold (全金处理的NiTi).
- 使用多模式方法评估仪器性能,包括模拟仪器,机械测试和有限元分析 (FEA).
主要方法:
- 60个NiTi旋转仪器 (每组20个) 在3D打印的牙中进行模拟道制备,直到骨折.
- 机械测试包括扭曲和曲负荷.
- 有限元分析 (FEA) 评估了应力分布,变形,循环疲劳和接触压力.
主要成果:
- BlueShaper Gold表现出最高的性能,在断裂前平均准备了7.5个通道,具有优越的扭转阻力和疲劳寿命.
- 在机械测试中, BlueShaper Pro表现出平衡的机械行为和最长的破裂时间.
- 蓝色表现最差,疲劳寿命最短,压力度最高.
结论:
- 在经过测试的NiTi系统中, BlueShaper Gold提供了最大的机械强度和耐疲劳性.
- BlueShaper Pro提供了良好的机械性能和疲劳寿命平衡.
- 合金组成是NiTi仪器耐用性的关键决定因素,无论设计如何.
相关概念视频
Mechanical Systems
285
Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically...
285
Mechanical Efficiency of Real Machines
851
The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...
However, in reality, no machine can be truly ideal, and all of them experience some...
851
Typical Model Studies
440
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
440
Design of Transmission Shafts - Stress Analysis
498
Designing a transmission shaft requires a thorough understanding of the stresses induced by bending moments and torques, especially in systems where power is transferred through gears. These forces create force-couple systems at the centers of the shaft's cross-sections, leading to both transverse and torsional loading. Although shearing stresses from transverse loads are typically smaller than those from torques and are often overlooked, the significant normal stresses from these loads...
498


