摩擦阻力在不同的正牙线和支架组合中的摩擦阻力的比较
Sonia Dubey1, Sanjeev K Tiwari2, Loveleen Kaur2
1Department of Orthodontic and Dentofacial Orthopaedics, Kalinga Institute of Dental Sciences, Bhubaneswar, Odisha, India.
Journal of pharmacy & bioallied sciences
|July 14, 2025
概括
研究发现,带有不钢线的不钢支架提供了最低的摩擦阻力,可以有效地移动正牙. 陶支架显示了高摩擦力,而自结合支架提供了平衡.
科学领域:
- 矯正牙科 矯正牙科是一種矯正牙科.
- 生物材料科学 生物材料科学
- 牙科机械 牙科机械
背景情况:
- 摩擦阻力对于有效的正牙移动至关重要.
- ортодонтика线和支架组合显著影响治疗结果.
- 了解摩擦是优化正牙器件设计的关键.
研究的目的:
- 为了比较各种正牙线和支架组合的摩擦阻力.
- 确定最佳组合,以尽量减少牙移动期间的摩擦.
- 为临床正统牙科实践提供数据驱动的建议.
主要方法:
- 测试了120个样本,根据线 (-,不钢) 和支架 (自,陶,不钢) 类型分为六组.
- 在干燥环境中模拟滑动机械,使用专门的测试设备在150g负载下进行测试.
- 使用通用测试设备以克计的摩擦阻力;用于统计分析的ANOVA (P < 0.05).
主要成果:
- 不钢支架与不钢线具有最低的平均摩擦阻力 (150g ±5g).
- 有-线的陶支架显示出最高的平均摩擦阻力 (400g ±10g).
- 对于两种电线类型,自结合支架均表现出适度的摩擦 (200-250g ±7g);所有差异均具有统计学意义 (P < 0.01).
结论:
- 建议使用不钢支架和电线组合,以最大限度地减少正牙治疗中的摩擦.
- 陶支架需要仔细考虑,因为高摩擦力.
- 自式支架在摩擦和易用性之间提供了一个实用的妥协.
相关概念视频
Bearings: Problem Solving
329
Understanding the calculations and concepts related to double-collar bearings is essential for engineers and designers to optimize the performance of these components in various applications. By analyzing the bearing under different conditions, one can ensure that it can withstand the forces and moments experienced during operation. This knowledge enables better decision-making when designing and selecting bearings for specific purposes and configurations. Consider a double-collar bearing with...
329
Types of Friction Problems
641
Friction is an essential concept in physics, engineering, and everyday life. It is the force that opposes the relative motion or tendency of such motion between two surfaces in contact. One of the most common types of friction encountered in various applications is dry friction. Dry friction problems can be broadly categorized into three types, each with unique characteristics and challenges.
The first type of dry friction problem involves situations where there is no apparent impending motion....
The first type of dry friction problem involves situations where there is no apparent impending motion....
641
Frictional Force
8.4K
When a body is in motion, it encounters resistance because the body interacts with its surroundings. This resistance is known as friction, a common yet complex force whose behavior is still not completely understood. Friction opposes relative motion between systems in contact, but also allows us to move. Friction arises in part due to the roughness of surfaces in contact. For one object to move along a surface, it must rise to where the peaks of the surface can skip along the bottom of the...
8.4K
Resistance
4.6K
When a current moves through any conductor, the conductor causes some level of difficulty for the current to flow. The measure of that difficulty is known as the resistance of the material and is represented by R. Every material has its own resistance. In the case of conductors, heat is emitted whenever a current passes through them. Resistance depends on the resistivity of the material. Resistivity is a characteristic of the material used to fabricate electrical components, whereas the...
4.6K
Magnetic Field Due to Two Straight Wires
2.9K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
2.9K
Frictional Forces on Screws
1.3K
Screws are characterized by a helical ridge known as a thread wrapped around a cylindrical shaft. They are commonly used as fasteners to hold objects together or to transmit power and motion in machines. One type of screw that is particularly useful for transmitting power is the square-threaded screw.
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...
1.3K


