Could rubber bands replace jaw surgery for underbites?

NCT ID NCT04911400

Ongoing Disease control Sponsor: Sydney Local Health District Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at whether adding rubber bands (elastics) to standard clear plastic retainers helps keep an underbite correction stable after orthodontic treatment. Researchers want to see if this simple addition can reduce the need for future jaw surgery. The trial involves 42 people who have already completed treatment for a skeletal underbite.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: Class III elastics (rubber bands) added to clear plastic retainers
What this could lead to: If it works, this could offer a non-surgical way to maintain underbite correction and reduce the need for jaw surgery.
What could go wrong: This is a small, early-stage study with only 42 participants. The results may not apply to everyone, and the elastics may not prevent relapse or surgery.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

autosomal dominant prognathism

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

CLASS III MALOCCLUSION UNDERBITE

Contacts and locations

Locations

Chatswood Orthodontics

Chatswood, New South Wales, 2067, Australia
Sydney Dental Hospital

Surry Hills, New South Wales, 2010, Australia

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