插座屏蔽技术:压力分布分析
Ricardo Guimarães Neves1, Priscilla Cardoso Lazari-Carvalho2, Marco Aurélio Carvalho2
1Private Practice, Goiânia, GO, Brazil.
Journal of Indian Society of Periodontology
|August 18, 2023
概括
与其他方法相比,用于牙脱落的口盾 (SS) 技术在骨组织中显示出更高的压力. 这种技术导致植入物周围的最大压力度.
科学领域:
- 生物材料科学是生物材料的科学.
- 牙科植入物学 牙科植入物学
- 生物力学 生物力学
背景情况:
- 有限元分析 (FEA) 用于评估牙科植入物学中的应力分布.
- 套口盾 (SS) 技术是治疗牙损失的一种方法.
- 将SS技术与其他方法进行比较对于理解植入物成功至关重要.
研究的目的:
- 使用FEA分析植入周围骨组织,植入物和假肢部件的应力分布.
- 将SS技术与异构骨移植 (HBG) 和控制 (C) 方法进行比较.
- 评估不同植入物放置策略的生物力学影响.
主要方法:
- 创建了一个高级中央切口植入物的3D FEA模型.
- 模拟了三个条件:SS,HBG和控制 (完全嵌入植入物).
- 应用了模拟最大间和突起的斜负荷.
主要成果:
- 与对照组相比,SS和HBG的骨组织压力值较高.
- 这种SS技术在周围植入物组织中表现出最高的应力度.
- 在根碎片,骨移植,植入物和假肢部件中观察到压力的最小差异.
结论:
- 这种SS技术导致植入周围骨组织的应力度增加.
- FEA为不同的植入技术的生物力学性能提供了宝贵的见解.
- 进一步的研究可能会探索SS技术的修改,以减轻压力.
相关概念视频
Stress Concentrations in Circular Shafts
200
Consider the elastic torsion formula, which applies to a circular shaft with a consistent cross-section. This formula assumes that the shaft's ends are loaded with rigid plates firmly attached. However, in many cases, torques are applied to the shaft through mechanisms like flange couplings or gears, which are connected by keys inserted into keyways. This application method modifies the stress distribution near the point of torque application, causing it to deviate from the distributions...
200
Design of Transmission Shafts - Stress Analysis
398
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...
398
Stress Concentrations
354
Stress concentration is when stress intensifies near discontinuities such as holes or abrupt cross-sectional changes in a structural member. This localized stress can often surpass the average stress within the member. The stress distribution in flat bars, either with a circular hole or varying widths connected by fillets, can be determined experimentally using a photoelastic method. The results are based on ratios of geometric parameters like the ratio of the hole's radius to the smaller...
354
Applications of Stress
366
Consider a structure made of a boom and a rod designed to support a load. These two components are connected by a pin and stabilized by brackets and pins. The boom and the rod are detached from their supports to assess the different stresses imposed on this structure, and a free-body diagram is drawn. Then, all the forces applied, including the load acting on the structure, are identified. The reaction forces exerted on both the boom and the rod are computed using the equilibrium equations.
The...
The...
366
Components of Stress
242
Stress analysis under multiple loading conditions is intricate, necessitating a comprehensive grasp of normal and shearing stresses. Consider a small cube at point O, subjected to stress on all six faces, visible or not. Normal stress components σx, σy, σz act perpendicularly to the x, y, and z axes. Shearing stress components τxy and τxz are exerted on faces perpendicular to these axes.
Interestingly, the hidden cube faces also experience these stresses, equal and...
Interestingly, the hidden cube faces also experience these stresses, equal and...
242
Stress: General Loading Conditions
335
To grasp the intricacy of real-world conditions where multiple loads are applied simultaneously to a structure, one might visualize a section passing through a specific point within a body, aligned parallel to the xy plane. This section is subjected to various forces, including original loads, normal forces, and shearing forces.
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes....
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes....
335


