Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Video

Updated: May 30, 2026

Studying Orthodontic Tooth Movement in Mice
07:17

Studying Orthodontic Tooth Movement in Mice

Published on: August 2, 2024

Mechanical behaviour of a prototype orthodontic retraction spring: a numerical-experimental study.

M A Ferreira1, R Assumpção, M A Luersen

  • 1Department of Biomedical Engineering, Technical Federal University of Parana, Brazil. regunteriato@yahoo.com.br

European Journal of Orthodontics
|July 23, 2011
PubMed
Summary

Titanium-molybdenum orthodontic delta retraction springs exhibit reliable mechanical behavior, remaining within their elastic limit even at significant activation. These springs offer clinically appropriate force levels and moment/force ratios for effective orthodontic treatment.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Morbidity associated with inhalation anesthesia in horses: The role of opioid use in a university teaching hospital.

Journal of equine veterinary science·2026
Same author

Characterization of bergamot essential oil: chemical, microbiological and colloidal aspects.

Brazilian journal of biology = Revista brasleira de biologia·2024
Same author

An expanded concept of <i>Ceratocystis manginecans</i> and five new species in the Latin American clade of <i>Ceratocystis</i>.

Mycologia·2023
Same author

A catalog of associations between rare coding variants and COVID-19 outcomes.

medRxiv : the preprint server for health sciences·2021
Same author

Grazing intensity as a management strategy in tropical grasses for beef cattle production: a meta-analysis.

Animal : an international journal of animal bioscience·2021
Same author

Genome-wide analysis in 756,646 individuals provides first genetic evidence that <i>ACE2</i> expression influences COVID-19 risk and yields genetic risk scores predictive of severe disease.

medRxiv : the preprint server for health sciences·2021

Area of Science:

  • Orthodontics
  • Biomaterials Science
  • Mechanical Engineering

Background:

  • Orthodontic treatment relies on appliances to apply controlled forces.
  • Titanium-molybdenum alloys are commonly used for orthodontic springs due to their favorable mechanical properties.

Purpose of the Study:

  • To investigate the mechanical behavior of orthodontic delta retraction springs.
  • To evaluate the force delivery and stress distribution under activation.

Main Methods:

  • Finite element (FE) analysis and experimental testing using a platform transducer.
  • Activation of twelve 0.016 × 0.022 inch titanium-molybdenum delta loops from 0 to 6 mm.
  • Statistical analysis using one-way ANOVA and Games-Howell test.

More Related Videos

Force System with Vertical V-Bends: A 3D In Vitro Assessment of Elastic and Rigid Rectangular Archwires
08:46

Force System with Vertical V-Bends: A 3D In Vitro Assessment of Elastic and Rigid Rectangular Archwires

Published on: July 24, 2018

The Establishment of a Murine Maxillary Orthodontic Model
04:11

The Establishment of a Murine Maxillary Orthodontic Model

Published on: October 27, 2023

Related Experiment Videos

Last Updated: May 30, 2026

Studying Orthodontic Tooth Movement in Mice
07:17

Studying Orthodontic Tooth Movement in Mice

Published on: August 2, 2024

Force System with Vertical V-Bends: A 3D In Vitro Assessment of Elastic and Rigid Rectangular Archwires
08:46

Force System with Vertical V-Bends: A 3D In Vitro Assessment of Elastic and Rigid Rectangular Archwires

Published on: July 24, 2018

The Establishment of a Murine Maxillary Orthodontic Model
04:11

The Establishment of a Murine Maxillary Orthodontic Model

Published on: October 27, 2023

Main Results:

  • FE analysis showed stress levels from 277 to 1273 MPa; springs remained elastic at 6.1 mm (773 MPa).
  • Experimental force levels ranged from 0.44 N at 1 mm to 2.02 N at 6 mm activation.
  • Spring rate was clinically appropriate (34 g/mm); vertical forces were minimal. Moment/force ratio decreased with activation.

Conclusions:

  • Orthodontic delta retraction springs demonstrate predictable mechanical responses within clinical activation ranges.
  • The springs can be activated up to 7 mm without exceeding their elastic limit.
  • The study validates the use of these springs in orthodontic applications.