NCT04911400

Effects of Class III Elastics on Stability of Orthopaedic Class III Correction

• Status: Enrolling By Invitation
• Phase: N/A
• Study type: Interventional
• Enrollment: 42 (estimated)
• Sponsor: Sydney Local Health District · Other Government
• Sex: All
• Age: 12 Years – 16 Years
• Healthy volunteers: Accepted

Summary

The purpose of this study is to evaluate the effects of adding elastics to orthodontic retainers on the stability of class III correction and whether it reduces the need for jaw surgery.

Detailed description

Over the years many types of appliances have been recommended for retaining Class III correction in growing children such as intermaxillary splints, class III activator, Frankel 3, Class III twin block, continued use of face-mask and chin-cup. However, currently none of these are in routine use and there is no evidence on the long term effectiveness of any retention protocol for class III correction. One of the most commonly used retainers following orthodontic treatment is clear plastic retainers. There are no studies that investigated whether using class III elastics in combination with clear plastic retainers improves the stability of class III correction and reduces the need for later jaw surgery.

Conditions

• Class III Malocclusion
• Underbite

Interventions

Type	Name	Description
OTHER	Upper-lower clear plastic retainers + Class III elastics	Addition of Class III elastics to clear plastic retainers
OTHER	Upper-lower clear plastic retainers	Upper-lower clear plastic retainers

Timeline

• Start date: 2020-07-22
• Primary completion: 2026-01-01
• Completion: 2027-01-01
• First posted: 2021-06-03
• Last updated: 2024-08-13

Locations

2 sites across 1 country: Australia