A Novel Remineralizing Self-Etch Primer for Orthodontic Bracket Bonding

NCT ID: NCT07291830

Last Updated: 2026-01-05

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

NA

Total Enrollment

45 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-12-15

Study Completion Date

2026-12-30

Brief Summary

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This randomized clinical trial aims to evaluate the clinical effectiveness of a remineralizing self-etch primer used for orthodontic bracket bonding. The study compares bonding performance, enamel surface effects, and clinical outcomes between the experimental primer and the conventional bonding protocol,verify the potential remineralization effect, and examine the amount of adhesive remnants left on enamel over a period of 6 months.

Detailed Description

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To evaluate the clinical performance of a newly developed self-etch primer (M-SEP) versus P-SEP in bonding metallic orthodontic brackets to different teeth, verify the potential remineralization effect, and examine the amount of adhesive remnants left on enamel over a period of 6 months.

Objectives:

Primary; Evaluating the clinical effectiveness of enamel etching/priming with M-SEP versus P-SEP in achieving clinically adequate bond strengths throughout the assessment of bracket failure rate over a period of 6 months.

Secondary;

1. Examining the potential enamel remineralization effect of both systems via the use of Fe-SEM and Raman spectroscopy.
2. Assessing the amount of remnant adhesive left post bracket failure (for both systems) via the use of SEM and digital photography.
3. Measuring the total time required for remnant adhesive removal post bracket failure/debonding.
4. Evaluating patient perception during bracket failure/debonding and subsequent adhesive removal procedure.

Conditions

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White Spot Lesions Enamel Demineralization

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Evaluating the clinical effectiveness of enamel etching/priming with M-SEP versus P-SEP in achieving clinically adequate bond strengths throughout the assessment of bracket failure rate over a period of 6 months.
Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants
multi-center, parallel-group, single-blinded randomized clinical trial conducted in accordance with the Consolidated Standards of Reporting Trials (CONSORT) guidelines for orthodontic research.

Study Groups

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Split-mouth bonding: SEP 1 left/LR vs SEP 2 right/LL

Patients receive the same fixed MBT stainless-steel appliance and archwire sequence as Group A. In this arm, maxillary left and mandibular right incisors, canines, and premolars are etched with SEP 1, while maxillary right and mandibular left counterparts are etched with SEP 2. Bonding follows identical polishing, priming, Transbond XT application, and LED light-curing protocol as in Group A.

Group Type EXPERIMENTAL

Remineralizing self-etch primer (M-SEP, SEP 1)

Intervention Type DEVICE

Experimental self-etch primer based on Transbond Plus modified with 7% nano-hydroxyapatite. Applied to labial/buccal enamel of incisors, canines, and premolars after pumice prophylaxis; air-dried 3 s, brackets bonded with Transbond XT and LED light-cured 10 s mesial and 10 s distal.

Standard self-etch primer (P-SEP, SEP 2)

Intervention Type DEVICE

Conventional Transbond Plus self-etch primer used according to manufacturer's instructions for enamel conditioning of incisors, canines, and premolars, followed by Transbond XT adhesive and LED light-curing as above.

Split-mouth bonding: SEP 1 right/LL vs SEP 2 left/LR

Patients receive fixed MBT stainless-steel brackets bonded with two self-etch primers in a split-mouth design. Maxillary right and mandibular left incisors, canines, and premolars are etched with SEP 1; maxillary left and mandibular right counterparts are etched with SEP 2. All teeth are polished with fluoride-free pumice, brackets bonded with Transbond XT, and standard NiTi-stainless-steel archwire sequence used in both arches.

Group Type EXPERIMENTAL

Remineralizing self-etch primer (M-SEP, SEP 1)

Intervention Type DEVICE

Experimental self-etch primer based on Transbond Plus modified with 7% nano-hydroxyapatite. Applied to labial/buccal enamel of incisors, canines, and premolars after pumice prophylaxis; air-dried 3 s, brackets bonded with Transbond XT and LED light-cured 10 s mesial and 10 s distal.

Standard self-etch primer (P-SEP, SEP 2)

Intervention Type DEVICE

Conventional Transbond Plus self-etch primer used according to manufacturer's instructions for enamel conditioning of incisors, canines, and premolars, followed by Transbond XT adhesive and LED light-curing as above.

Interventions

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Remineralizing self-etch primer (M-SEP, SEP 1)

Experimental self-etch primer based on Transbond Plus modified with 7% nano-hydroxyapatite. Applied to labial/buccal enamel of incisors, canines, and premolars after pumice prophylaxis; air-dried 3 s, brackets bonded with Transbond XT and LED light-cured 10 s mesial and 10 s distal.

Intervention Type DEVICE

Standard self-etch primer (P-SEP, SEP 2)

Conventional Transbond Plus self-etch primer used according to manufacturer's instructions for enamel conditioning of incisors, canines, and premolars, followed by Transbond XT adhesive and LED light-curing as above.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Full permanent dentition including incisors, canines, premolars, and molars (excepting 3rd molars;
* Teeth with sound, non-carious buccal enamel and no pretreatment with chemical agents such as hydrogen peroxide,
* No previous orthodontic treatment with fixed appliances.

Exclusion Criteria

* Participants unable to give informed consent,
* Had craniofacial anomalies,
* Require orthognathic surgery as part of their treatment,
* Had congenital enamel defects.
Minimum Eligible Age

12 Years

Maximum Eligible Age

35 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Baghdad

OTHER

Sponsor Role lead

Responsible Party

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Ali I Ibrahim

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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College of Dentistry, University of Baghdad - Orthodontic Dept/Postgraduate Clinic

Baghdad, Baghdad Governorate, Iraq

Site Status

Countries

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Iraq

Central Contacts

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DIYAR TAHER AGHA, MSc Candidate

Role: CONTACT

009647705880686

Ali I Ibrahim, Professor

Role: CONTACT

Facility Contacts

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Diyar Taher Agha, MSc Candidate

Role: primary

009647705880686

Ali I Ibrahim, Professor

Role: backup

References

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Erbe C, Hartmann L, Schmidtmann I, Ohlendorf D, Wehrbein H. A novel method quantifying caries following orthodontic treatment. Sci Rep. 2021 Nov 1;11(1):21347. doi: 10.1038/s41598-021-00561-7.

Reference Type BACKGROUND
PMID: 34725354 (View on PubMed)

Garma NMH, Ibrahim AI. Development of a remineralizing calcium phosphate nanoparticle-containing self-etching system for orthodontic bonding. Clin Oral Investig. 2023 Apr;27(4):1483-1497. doi: 10.1007/s00784-022-04767-5. Epub 2022 Nov 2.

Reference Type BACKGROUND
PMID: 36322155 (View on PubMed)

Other Identifiers

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1102425

Identifier Type: -

Identifier Source: org_study_id

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