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3D-Printed vs Conventional Fixed Retainers After Orthodontic Treatment
Sponsor: Minia University
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.
Official title: Comparison Between Three-Dimensionally Printed Fixed Retainers Versus Conventional Multistranded Stainless Steel Fixed Retainers: Randomized Clinical Trial
Key Details
Gender
All
Age Range
21 Years - 35 Years
Study Type
INTERVENTIONAL
Enrollment
36
Start Date
2026-08-01
Completion Date
2027-09-01
Last Updated
2026-07-31
Healthy Volunteers
Yes
Conditions
Interventions
Conventional Multistranded Stainless Steel Fixed Retainer
Conventional 0.0215-inch six-stranded stainless steel bonded fixed retainer.
3D-Printed Cobalt-Chromium Fixed Retainer
Customized 3D-printed cobalt-chromium bonded fixed retainer fabricated from intraoral scans.
3D-Printed Titanium Fixed Retainer
Customized 3D-printed titanium (Ti-6Al-4V) bonded fixed retainer fabricated from intraoral scans.