Related Experiment Video
Updated: Mar 30, 2026

08:46
Force System with Vertical V-Bends: A 3D In Vitro Assessment of Elastic and Rigid Rectangular Archwires
Published on: July 24, 2018
11.4K
Multistranded wire bonded retainers: from start to success
1Professor emeritus, Department of Orthodontics, University of Oslo, Oslo, Norway.
Summary
This article discusses multistranded fixed retainers used in orthodontics. The author recommends a 5-stranded, 0.0215-inch wire based on extensive clinical experience.
Area of Science:
- Orthodontics
- Dental Materials Science
Background:
- Fixed or bonded retainers are standard post-orthodontic treatment appliances.
- Various wire types and sizes exist for labial or lingual bonding.
Purpose of the Study:
- To present the background and evolution of multistranded fixed retainers.
- To provide clinical recommendations for their application.
Main Methods:
- Review of the evolution of multistranded fixed retainers.
- Clinical experience over 20 years informing recommendations.
Main Results:
- Discussion of the historical development of fixed retainers.
- A specific recommendation for retainer wire selection.
Conclusions:
- Multistranded fixed retainers are crucial in orthodontic retention.
- A 5-stranded, 0.0215-inch diameter wire is recommended for optimal clinical outcomes.
Related Concept Videos
Bonding and Strength of Aggregate
943
The bond between aggregate particles and the cement matrix is significantly influenced by the shape and surface texture of the aggregates. High-strength concretes benefit from a rougher texture, which leads to stronger bonding due to greater adhesion. Angular aggregates with larger surface areas also enhance this bond. The bonding quality, however, is complex to assess as no universally accepted test exists. Good bonding is indicated when a crushed concrete specimen shows some aggregate...
943
Bonding in Metals
56.0K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”.
56.0K
Posttensioned Masonry Walls
588
Post-tensioned masonry walls use high-strength steel rods or flexible tendons to enhance the strength and efficiency of masonry structures. These elements are securely anchored to the foundation and extend vertically either within the cores of the masonry units or between the masonry wythes. The construction process involves building the wall with these tensioning elements in place and allowing the mortar to fully cure.
Following the curing process, the tensioning begins. Steel rods are...
588
Ionic Bonds
135.7K
Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
135.7K
Ionic Bonds
10.8K
10.8K
Reinforced Brick Masonry
2.3K
Reinforced brick masonry is an advanced construction technique that enhances the structural integrity of brick walls by incorporating steel reinforcements. These reinforcements are either placed within the hollow cores of bricks or sandwiched between two layers of masonry, known as wythes, and are then secured in place with grout. Grout is a fluid mixture composed of Portland cement, aggregate, and water, providing the necessary bonding agent for the steel and brick.
To fortify brick walls...
To fortify brick walls...
2.3K

