Bond PairNCT07552155
Comparison of 3D Printed Resin Fixed Mandibular Retainer Versus Conventional Fixed Bonded Retainer
A study testing Resin fixed retainer and Conventional fixed retainer in people with Bond Pair, run by Raghda Alaa at 1 site in Egypt.
Trial 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 Read more about this study
- Who is it for?
- Any ageHealthy volunteers can take part
- Conditions the study is for
- Bond Pair
- What is being tested?
- Resin fixed retainer and Conventional fixed retainer
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 64 participants
- Where
- 1 siteEgypt
- Study dates
- 1 Feb 2025to 1 Jul 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- Healthy volunteers accepted
- Child, Adult, Older adult
Who may be able to join
- 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
Who cannot join
- 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.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Comparison of 3D Printed Resin Fixed Mandibular Retainer Versus Conventional Fixed Bonded Retainer A Randomized Clinical Trial
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
- Conditions
- Bond Pair
- Being tested
- Resin fixed retainer, Conventional fixed retainer
- Medical subject headings
- Pair Bond
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Resin fixed retainerDevice
Resin wire as key modification
Conventional fixed retainerDevice
Conventional fixed retainer
| Study group | Role | What they receive |
|---|---|---|
| Conventional fixed retainer | Active comparator | Conventional fixed retainer Receives: Device: Conventional fixed retainer |
| 3d printed resin retainer | Experimental | Not described Receives: Device: Resin fixed retainer |
What is being measured
The primary outcome is the main question the study is designed to answer.
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
Measured: Baseline to 12 months
Secondary outcomes (4)
Chairside time
Measure: Time required for bonding the fixed retainer Measurement Tool: Digital stopwatch Unit: Seconds Time Frame: During bonding procedure (single visit, baseline)
Measured: During bonding procedure (baseline visit)
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
Measured: Every 3 month
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
Measured: Every 3 month till 12 month
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
Measured: After 12 month
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 Apr 2026
- Study start1 Feb 2025
- Primary completion1 May 2026 (estimated)
- Study completion1 Jul 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Bond PairStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 64 participants (actual)
Sponsor and investigators
- Lead sponsor
- Raghda Alaa
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, Raghda Alaa, Cairo University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07552155
- Sponsor's protocol ID
- Orth332
- Status last verified
- Apr 2026
- First submitted
- 8 Apr 2026
- Last updated
- 27 Apr 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 27 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparison of 3D Printed Resin Fixed Mandibular Retainer Versus Conventional Fixed Bonded Retainer A Randomized Clinical Trial
- ClinicalTrials.gov ID
- NCT07552155
- Acronym / sponsor ID
- Orth332
- Conditions
- Bond Pair
- Study type
- Interventional
- Recruitment status
- Active, not recruiting
- Enrolment
- 64 participants (actual)
- Lead sponsor
- Raghda AlaaUniversity, hospital or other
- Study start
- 1 Feb 2025 (actual)
- Primary completion
- 1 May 2026 (estimated)
- Study completion
- 1 Jul 2026 (estimated)
- First posted
- 27 Apr 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Conventional fixed retainer | Active comparator | Device: Conventional fixed retainerConventional fixed retainer |
| 3d printed resin retainer | Experimental | Device: Resin fixed retainer |
Who may qualify
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (5 listed)
Key exclusion criteria (6 listed)
- 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.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Resin fixed retainerResin wire as key modification | Device | 3d printed resin retainer |
| Conventional fixed retainerConventional fixed retainer | Device | Conventional fixed retainer |
Primary outcome
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
4 secondary outcomes
Chairside time
Time frame: During bonding procedure (baseline visit)
Plaque accumilation
Time frame: Every 3 month
Wire breakage
Time frame: Every 3 month till 12 month
Posttreatment relapse
Time frame: After 12 month
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 Apr 2026.
- Individual participant dataSharing planned: Undecided
Related trials for Bond Pair
Active, not recruiting
Comparison of Perforated 3D Printed Versus Conventional Metal Fixed Bonded Retainer
Bond, Pair
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Resin fixed retainer and Conventional fixed retainer in people with Bond Pair, run by Raghda Alaa at 1 site in Egypt.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: under way, not looking for participants, as of the sponsor's last update on 27 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Egypt. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Bond failure (time frame: Baseline to 12 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Apr 2026.