RecruitingNot ApplicableNCT07098325

Biological Reaction of Direct 3d Printed Retainers

Evaluation of Biological Reaction of Direct Three Dimensional Printed Retainers

Sponsor

Al-Azhar University

Enrollment

26 participants

Start Date

Oct 1, 2025

Study Type

INTERVENTIONAL

Conditions

Orthodontic Retainers

Summary

The aim of this study will be to evaluate the biological reaction of direct three dimensional printed retainers. Primary objective is to evaluate bacterial growth and color stability between different thicknesses of 3d printed material used as a retainer . Secondary objective is to determine the optimal thickness for use in clear aligner fabrication based on biological performance.

Eligibility

Inclusion Criteria3

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 Criteria5

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

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Interventions

DEVICEretainer with .5 mm thickness

direct 3d printed retainer with .5 mm thickness

DEVICEretainer with 1 mm thickness

direct 3d printed retainer with 1 mm thickness,

Locations(1)

Faculty of Dental Medicine , Al-Azhar University

Asyut, Egypt

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NCT07098325