NCT07552155

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

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
64

participants targeted

Target at P50-P75 for not_applicable

Timeline
0mo left

Started Feb 2025

Geographic Reach
1 country

1 active site

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress97%
Feb 2025Jul 2026

Study Start

First participant enrolled

February 1, 2025

Completed
1.2 years until next milestone

First Submitted

Initial submission to the registry

April 8, 2026

Completed
19 days until next milestone

First Posted

Study publicly available on registry

April 27, 2026

Completed
4 days until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 1, 2026

Completed
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2026

Expected
Last Updated

April 27, 2026

Status Verified

April 1, 2026

Enrollment Period

1.2 years

First QC Date

April 8, 2026

Last Update Submit

April 20, 2026

Conditions

Bond Pair

Outcome Measures

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

    Baseline to 12 months

Secondary Outcomes (4)

  • Chairside time

    During bonding procedure (baseline visit)

  • Plaque accumilation

    Every 3 month

  • Wire breakage

    Every 3 month till 12 month

  • Posttreatment relapse

    After 12 month

Study Arms (2)

Conventional fixed retainer

ACTIVE COMPARATOR

Conventional fixed retainer

Device: Conventional fixed retainer

3d printed resin retainer

EXPERIMENTAL
Device: Resin fixed retainer

Interventions

Resin fixed retainerDEVICE

Resin wire as key modification

3d printed resin retainer
Conventional fixed retainerDEVICE

Conventional fixed retainer

Conventional fixed retainer

Eligibility Criteria

Sexall
Healthy VolunteersYes
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

  • 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

You may not qualify if:

  • 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.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Faculty of dentistry

Cairo, Egypt

Location

MeSH Terms

Conditions

Pair Bond

Condition Hierarchy (Ancestors)

Sexual Behavior, AnimalConsummatory BehaviorBehavior, AnimalBehavior

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
OTHER
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Phd candidate

Study Record Dates

First Submitted

April 8, 2026

First Posted

April 27, 2026

Study Start

February 1, 2025

Primary Completion

May 1, 2026

Study Completion (Estimated)

July 1, 2026

Last Updated

April 27, 2026

Record last verified: 2026-04

Locations

EG(1)