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Active, not recruitingNCT07552155Updated Apr 27, 2026

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

An interventional study of Resin fixed retainer and Conventional fixed retainer in Bond Pair, sponsored by Raghda Alaa. Active, not recruiting at 1 site in Egypt. Per ClinicalTrials.gov, last updated 2026-04-27.

Sponsored by Raghda Alaa · Not applicable, Interventional, and Other

From the registry’s dates

  • Primary completion was expected by May 2026, 5 months ago, but the record still lists the study as active, not recruiting.
  • Registered 1 year 2 months after the study started (first participant enrolled Feb 2025, registered Apr 2026).
Phase
Not applicable
Study type
Interventional
Enrollment
64
Allocation
Randomized
Sex
All
01

Study 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

02

Conditions studied

  • Bond Pair
03

In context

Lead sponsor

Raghda Alaa is the lead sponsor of 2 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
Yes

Eligibility criteria

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.
05

Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
64 participants (actual)

Study arms

  • Active comparator
    Conventional fixed retainer

    Conventional fixed retainer

    Device: Conventional fixed retainer

  • Experimental
    3d printed resin retainer

    Device: Resin fixed retainer

Interventions

  • DeviceResin fixed retainer

    Resin wire as key modification

  • DeviceConventional fixed retainer

    Conventional fixed retainer

06

What researchers measure

Primary outcomes

  1. Bond failure

    Primary 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

    Time frame: Baseline to 12 months

Secondary outcomes

  1. Chairside time

    Measure: Time required for bonding the fixed retainer Measurement Tool: Digital stopwatch Unit: Seconds Time Frame: During bonding procedure (single visit, baseline)

    Time frame: During bonding procedure (baseline visit)

  2. Plaque accumilation

    Measure: 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

    Time frame: Every 3 month

  3. Wire breakage

    Measure: 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

    Time frame: Every 3 month till 12 month

  4. Posttreatment relapse

    Measure: Alignment changes of mandibular anterior teeth Measurement Tool: Little's Irregularity Index Unit: Millimeters (mm) Time Frame: Baseline and12 months follow-up

    Time frame: After 12 month

07

Study locations

1 site
  • Faculty of dentistry
    Cairo, Egypt
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 27, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07552155
Lead sponsor
Raghda Alaa
Responsible party
Raghda Alaa (Phd candidate, Cairo University) — Sponsor-investigator
First posted
Apr 27, 2026
Start date
Feb 1, 2025
Primary completion
May 1, 2026 (estimated)
Completion
Jul 1, 2026 (estimated)
Last update
Apr 27, 2026

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Apr 2026. You cannot join it, but the record below documents what was studied.

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Discussion

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Other studies in this condition

Pair Bond

Other studies from this sponsor

Raghda Alaa

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