The battle of the retainers: which one holds the line?

NCT ID NCT04828096

Ongoing Disease control Sponsor: Region Örebro County Source: ClinicalTrials.gov ↗

First seen Aug 13, 2026 · Last updated Aug 14, 2026 · Updated 1 time

Summary

This trial compares three types of bonded retainers—Penta-one, Ortho-Flextech, and Memotain—to see which is most effective at keeping teeth in their corrected position after braces. Over five years, researchers will track failure rates, complications, and cost-effectiveness in 324 patients. The goal is to find the most reliable retainer to prevent teeth from shifting back.

What this could mean

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

Active substance: Three types of bonded orthodontic retainers: Penta-one, Ortho-Flextech, and Memotain
What this could lead to: If one retainer proves more durable and effective, it could become the preferred choice for keeping teeth straight after braces, reducing the need for repairs.
What could go wrong: This is a long-term trial, and results may vary. Retainers can break or cause gum irritation, and the best option may depend on individual patient factors.

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Conditions

The condition(s) this trial relates to.

Malocclusion

As listed by the trial registrant

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

DENTAL MALOCCLUSION STABILITY

Contacts and locations

Locations

Postgraduate Dental Education Center

Örebro, Örebro County, SE-70111, Sweden
Universitat Internacional de Catalunya, Department of Orthodontics

Barcelona, Catalonia, Spain

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