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3D-Printed vs Conventional Fixed Retainers After Orthodontic Treatment

NCT07730476 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 36

Last updated 2026-07-31

No results posted yet for this study

Summary

This randomized clinical trial aims to compare the clinical performance of two types of three-dimensionally printed fixed retainers (Cobalt-Chromium and Titanium Grade 5) with the conventional multistranded stainless steel fixed retainer following orthodontic treatment. Thirty-six participants will be randomly allocated into three parallel groups with a 1:1:1 allocation ratio. The primary outcome is post-treatment stability assessed by Little's Irregularity Index and lower arch dimensions. Secondary outcomes include bond failure rate and periodontal parameters over a 12-month follow-up period.

Conditions

  • Orthodontic Relapse
  • Malocclusion

Interventions

DEVICE

Conventional Multistranded Stainless Steel Fixed Retainer

Conventional 0.0215-inch six-stranded stainless steel bonded fixed retainer.

DEVICE

3D-Printed Cobalt-Chromium Fixed Retainer

Customized 3D-printed cobalt-chromium bonded fixed retainer fabricated from intraoral scans.

DEVICE

3D-Printed Titanium Fixed Retainer

Customized 3D-printed titanium (Ti-6Al-4V) bonded fixed retainer fabricated from intraoral scans.

Sponsors & Collaborators

  • Minia University

    lead OTHER

Principal Investigators

  • Salma A daabis, BDS · Minia University

  • Ahmed Sh Hashem, Professor · Minia University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
21 Years
Max Age
35 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2026-08-01
Primary Completion
2027-08-01
Completion
2027-09-01

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07730476 on ClinicalTrials.gov