About this trial
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.
Eligibility criteria
Qualifiers
Age range 21-35 years old after finishing orthodontic treatment.
Presence of all maxillary and mandibular anterior teeth with normal shape and size.
Completion of orthodontic treatment with full fixed appliances.
Disqualifiers
Patients with cleft lip and/or palate or any other craniofacial syndrome
Patients with compromised oral hygiene or periodontal disease
Patients who had orthognathic surgery
Lingual appliance treatments
Trial design
Treatments tested in this trial
- Conventional Multistranded Stainless Steel Fixed Retainer
- 3D-Printed Cobalt-Chromium Fixed Retainer
- 3D-Printed Titanium Fixed Retainer