Biological response to directly 3D-printed orthodontic retainers

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This interventional study will fit patients who completed fixed orthodontic treatment with directly 3D-printed clear retainers manufactured at two thicknesses (0.5 mm and 1.0 mm). Participants with good oral hygiene and no habits like smoking will be followed over time to measure bacterial colonization and color stability of the retainers. Primary outcomes are quantitative bacterial growth and objective color change; a secondary outcome is determining the optimal thickness for biological performance in clear aligner fabrication. Patients taking medications that affect saliva, with periodontitis, intrinsic tooth discoloration, or who cannot follow instructions will be excluded.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* -Finished fixed orthodontic therapy and seeking for retention as a part of their original treatment plan.
* Good oral hygiene.
* No habits (e.g., smoking)

Exclusion Criteria:

* Medication affecting saliva.

  * intrinsic tooth discoloration.
  * Uncooperative patients.
  * Patient with periodontitis.
  * Learning difficulties and inability to read written instructions.

Where it's running

• Faculty of Dental Medicine , Al-Azhar University
  Asyut, Egypt Recruiting

Study contacts

• Study coordinator: Norhan Ibrahim Eldsokee Master's Candidate, B.D.S
• Email: noureldsokee@gmail.com
• Phone: +20 01559921144

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.