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Comparison of 3D Printed Resin Fixed Mandibular Retainer Versus Conventional Fixed Bonded Retainer

Comparison of 3D Printed Resin Fixed Mandibular Retainer Versus Conventional Fixed Bonded Retainer A Randomized Clinical Trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07552155
Enrollment
64
Registered
2026-04-27
Start date
2025-02-01
Completion date
2026-07-01
Last updated
2026-04-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bond Pair

Brief summary

Although there are many studies in the literature concerning with methods of bonding of mandibular retainers whether directly or indirectly, there is a very limited evidence regarding their chair side time and bond failure. Also there are scarce data on 3D printed fixed mandibular retainers. Choic

Interventions

DEVICEResin fixed retainer

Resin wire as key modification

Conventional fixed retainer

Sponsors

Raghda Alaa
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Healthy volunteers
Yes

Inclusion criteria

* Inclusion Criteria: * Patients with properly finished orthodontic treatment. * No sex predilection. * The presence of 4 permanent mandibular incisors and 2 permanent mandibular canines. * No active caries, restorations, fractures, or periodontal disease of previously mentioned teeth * Patients with good oral

Exclusion criteria

* Patients with no need of fixed mandibular retention. * Enamel hypoplasia or hypocalcification of mandibular anterior teeth. * Abnormal morphology of mandibular anterior teeth * Periodontal disease that contraindicates fixed orthodontic retention. * No or poor patient's compliance \& bad oral hygiene. * Psychological problems.

Design outcomes

Primary

MeasureTime frameDescription
Bond failureBaseline to 12 monthsPrimary Outcome Bond Failure Measured by number of debonded teeth using clinical examination and during follow ups Time Frame: Immediately after bonding (baseline visit) till 12 months

Secondary

MeasureTime frameDescription
Chairside timeDuring bonding procedure (baseline visit)Measure: Time required for bonding the fixed retainer Measurement Tool: Digital stopwatch Unit: Seconds Time Frame: During bonding procedure (single visit, baseline)
Plaque accumilationEvery 3 monthMeasure: Plaque score around mandibular anterior teeth Measurement Tool: Silness and Löe Plaque Index Unit: Numerical score Time Frame: Baseline ,3 month 6 months and 12 months follow-up
Wire breakageEvery 3 month till 12 monthMeasure: Presence or absence of retainer wire fracture Measurement Tool: Clinical examination Unit: Binary (Yes/No) Time Frame: During 3 month ,6-month and 12 months follow-up period
Posttreatment relapseAfter 12 monthMeasure: Alignment changes of mandibular anterior teeth Measurement Tool: Little's Irregularity Index Unit: Millimeters (mm) Time Frame: Baseline and12 months follow-up

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 28, 2026