Related Experiment Video
Updated: Sep 6, 2025
08:46
Force System with Vertical V-Bends: A 3D In Vitro Assessment of Elastic and Rigid Rectangular Archwires
Published on: July 24, 2018
10.8K
Comparative Evaluation of Two Bracket Systems' Kinetic Friction: Conventional and Self-Ligating
Aurel-Claudiu Vartolomei1, Dan-Cosmin Serbanoiu1, Dana-Valentina Ghiga1
1Faculty of Dental Medicine, GEP University of Medicine Pharmacy, Science and Technology of Targu Mures, 540139 Târgu Mureș, Romania.
Materials (Basel, Switzerland)
|June 24, 2022
Summary
This study compared friction in orthodontic brackets. Active self-ligating brackets showed more friction than passive ones, while passive self-ligating brackets had less friction than conventional brackets.
Area of Science:
- Orthodontics
- Biomaterials Science
- Dental Mechanics
Background:
- Friction in orthodontics is crucial for sliding mechanics.
- The debate continues on whether self-ligating brackets offer lower friction than conventional ones.
Purpose of the Study:
- To compare the frictional properties of self-ligating brackets (active and passive) with conventional brackets.
- To evaluate friction based on different bracket ligating mechanisms.
Main Methods:
- Laboratory measurements using an advanced materials testing machine.
- Assessment of tensile strength and load at maximum load to quantify frictional resistance.
- Statistical analysis of generated parameters at the archwire-bracket slot interface.
Main Results:
- Active self-ligating brackets exhibited higher friction compared to passive self-ligating brackets.
- Passive self-ligating brackets demonstrated statistically significant lower friction than conventional brackets.
- Active self-ligating brackets showed comparable friction to conventional brackets with stainless steel ligatures.
Conclusions:
- Frictional characteristics vary significantly between different self-ligating bracket types and conventional brackets.
- Passive self-ligating systems may offer reduced friction, potentially improving orthodontic treatment efficiency.
- Bracket design and ligation method are critical factors influencing frictional forces in orthodontics.
More Related Videos
07:16Author Spotlight: Development of a Novel Finite Element Analysis Model for Improved Orthognathic Surgical Techniques
Published on: October 20, 2023
1.4K
07:42Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
453
Related Concept Videos
01:05Static and Kinetic Frictional Force
16.1K
One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems, and is always in a direction that opposes the motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, kinetic friction slows a hockey puck sliding on ice.
However, if two systems are in contact and are stationary relative to one...
However, if two systems are in contact and are stationary relative to one...
16.1K
01:17Frictional 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
01:24Wedges
1.2K
A wedge is a simple machine that serves various purposes, such as adjusting the elevation of structural or mechanical parts, providing stability for heavy objects, and splitting a body into two parts. This versatile tool can amplify an applied force, making it easier to manipulate large or heavy objects.
Consider using a wedge to lift a heavy slab. Here, the wedge functions by converting the applied force into a much larger force directed almost perpendicular to the initial force. This...
Consider using a wedge to lift a heavy slab. Here, the wedge functions by converting the applied force into a much larger force directed almost perpendicular to the initial force. This...
1.2K
01:26Kinetic Friction
1.0K
Consider a truck trying to pull a stationary car. As the truck exerts a force on the car, static friction is created at the point of contact between the two surfaces. This frictional force resists the car's movement and keeps it at rest. However, when the applied force by the truck surpasses the limiting static frictional force, an interesting phenomenon occurs. The frictional force at the interface reduces to a lower value, known as the kinetic frictional force. At this point, the car...
1.0K
01:27Types of Friction Problems
631
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....
631
01:21Characteristics of Dry Friction
675
Dry friction occurs when two solid surfaces slide against each other without any lubrication or fluid present. It causes resistance when pushing objects along a surface, like a gardener pushing a wheelbarrow. The force applied to move the cart causes dry friction between the wheel and the ground.
Before the wheelbarrow starts moving, the static frictional force acts tangentially to the contact surface, opposing the force that is about to induce the motion. This frictional force prevents the...
Before the wheelbarrow starts moving, the static frictional force acts tangentially to the contact surface, opposing the force that is about to induce the motion. This frictional force prevents the...
675