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OpenTrials
Active, Not Recruiting

NCT Number: NCT07552155

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

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

Active, Not Recruiting

This study is active but is not currently recruiting participants.

Key information

Conditions

Bond Pair Behavior Behavior, Animal Consummatory Behavior Pair Bond Sexual Behavior, Animal

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Faculty of dentistry

Cairo, Egypt

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

Resin fixed retainer

Device

Resin wire as key modification

Conventional fixed retainer

Device

Conventional fixed retainer

Primary outcomes

  1. Bond failure

    Time frame: Baseline to 12 months

    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

Secondary outcomes

  1. Chairside time

    Time frame: During 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)

  2. Plaque accumilation

    Time frame: Every 3 month

    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

  3. Wire breakage

    Time frame: Every 3 month till 12 month

    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

  4. Posttreatment relapse

    Time frame: After 12 month

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

Sponsors and collaborators

Lead sponsor

Raghda Alaa

Other

Registry information

Official study title

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

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Apr 27, 2026
Registry last updated
Apr 27, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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