Clear aligner edge design may influence gum bacteria

NCT ID NCT07533058

Completed Knowledge-focused Sponsor: George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Targu Mures Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Aug 11, 2026 · Updated 3 times

Summary

This study tests whether the way a clear aligner's edge meets the gumline changes the types of bacteria living in the gum pocket. 36 people in the finishing phase of orthodontic treatment wore aligners with two different edge designs at the same time—one covering a bit of gum, the other following the gumline exactly. Researchers measured levels of seven gum-disease-related bacteria after 4 and 8 weeks to see if one design promotes more harmful bacteria.

What this could mean

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

Active substance: CA Pro tri-layer finishing clear aligner (SCHEU-DENTAL GmbH)
What this could lead to: If it works, this could help orthodontists choose aligner designs that reduce the risk of gum disease during treatment.
What could go wrong: This is a small, early-stage study (36 people) looking only at bacterial levels, not actual gum disease. Results may not apply to everyone or predict long-term outcomes.

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Conditions

The condition(s) this trial relates to.

Malocclusion periodontal disorder

As listed by the trial registrant

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

MALOCCLUSION ORAL HEALTH PERIODONTAL DISEASES

Contacts and locations

Locations

Aorys Clinic

Sibiu, Sibiu County, 550027, Romania

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