Gold-plated versus stainless-steel fixed retainers for lower front teeth

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 randomized, single-center trial will allocate post-orthodontic patients 1:1 to receive a 0.0195-inch multistranded gold-plated mandibular fixed retainer or an identical-gauge stainless-steel retainer. Eligible participants are aged 15–30 with well-aligned mandibular anterior teeth, healthy periodontium, and no prior bonded retainer, and they will be followed for six months with scheduled clinical visits. The primary outcomes are change in Little's Irregularity Index to quantify anterior alignment and retainer failure metrics such as time to first failure and tooth-level failure events. Secondary measures include periodontal health indices and microbiological plaque sampling to explore differences in tissue response or biofilm formation.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Age: 15-30 years.
* Patients who have completed comprehensive orthodontic treatment ,with well-aligned mandibular anterior teeth (Little's Irregularity Index ≤ 0.5 mm) at debond; both extraction and non-extraction cases are eligible.
* Patients with good oral hygiene and healthy periodontium at baseline; no previous bonded retainer.
* All mandibular anterior teeth present (canine-canine), with sound lingual enamel suitable for bonding.

Exclusion Criteria:

* Patients with a history of rapid maxillary expansion (RME) or surgically assisted RME (SARME).
* Patients with a cleft lip / and or palate (craniofacial anomalies).
* Patients with marked deep overbite and/or parafunctional habits (e.g., bruxism, clenching).
* Patients with conditions precluding reliable bonding in the mandibular anterior segment (active caries, extensive restorations, enamel fractures) or missing teeth from canine to canine.
* Patients with medical/periodontal conditions likely to affect gingival health (e.g., active periodontitis, uncontrolled systemic disease).

Where it's running

• College of Dentistry, University of Baghdad - Orthodontic Clinics
  Baghdad, Baghdad Governorate, Iraq Recruiting

Study contacts

• Principal investigator: Noor Noor, Bds — noor sattar
• Study coordinator: NOOR Raheem, BDS
• Email: Noor.sattar2403@codental.uobaghdad.edu.iq
• Phone: +9647704514927

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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.