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Enrolling by invitationNCT07617480AE SBE BF BBUpdated Sep 9, 2026

Comparison of Orthodontic Bracket Bond Failure Using Acid Etching With or Without Sandblasting

An interventional study of Sandblasting with acid etching vs Acid etching alone and Acid Etching only in Dental Etching, Dental Bonding and Acid Etching, sponsored by Tanzila Rafique. Enrolling by invitation at 1 site in Bangladesh. Open to participants aged 18 Years to 64 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-09.

Sponsored by Tanzila Rafique · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
15
Allocation
Randomized
Ages
18 Years to 64 Years
Sex
All
01

Study summary

The goal of this clinical trial is to assess if sandblasting before acid etching reduce orthodontic bracket bond failure in fixed orthodontic treatment. The main question it aims to answer is:

  • What are the differences in bracket bond failure rate between acid etching with or without sandblasting method for the preparation of enamel? Researchers will compare acid etching with sandblasting method to acid etching without sandblasting method for enamel preparation to see if sandblasting prior to acid etching reduce bracket bond failure rate.

Participants will:

  • Receive sandblasting of enamel before acid etching on one side of the mouth and only acid etching on the contralateral side for enamel preparation.
  • Participants would visit at the the OPD of Hospital at 3 weeks interval for follow up and for a total duration of 4 months to assess the changes. The number of bracket bond dislodgements at each session will be recorded .
02

Conditions studied

  • Dental Etching
  • Dental Bonding
  • Acid Etching
  • Acid Etching, Dental
  • Dental Acid Etching

Keywords

  • Acid etching
  • Sandblasting
  • Orthodontic bracket
  • Enamel preparation
  • Bond failure
03

In context

Lead sponsor

Tanzila Rafique is the lead sponsor of 4 studies on the registry; 4 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 64 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  1. Participants with good general health condition and oral hygiene status.
  2. Age range of the patients will be 18 years and above.
  3. Sex of the participants will be both male and female.
  4. Patients with full permanent dentition present (excluding 3rd molar).
  5. Patients with enamel integrity, absence of traumatic or carious lesion.
  6. Participants who had no enamel pretreatment procedure performed with chemical agents.
  7. Participants with no crossbite, scissor bite or occlusal interference (to prevent any potential early bond failure).

Exclusion criteria

Exclusion Criteria:

  1. Patients who have congenital enamel defects,
  2. Patients who are in need of orthognathic surgery.
  3. Patients with craniofacial syndromes.
  4. Patients who present with partially erupted teeth with hypoplasia.
  5. Patients for whom a rapid expander or a fixed functional appliance will be planned.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
15 participants (estimated)

Study arms

  • Active comparator
    Sandblasting

    Sandblasting will be applied onto the vestibular surfaces of the teeth before applying the etchant

    Procedure: Sandblasting with acid etching vs Acid etching alone

  • Active comparator
    Acid Etching Alone

    Only acid etching will be applied onto the vestibular surfaces of the teeth for enamel preparation.

    Procedure: Acid Etching only

Interventions

  • ProcedureSandblasting with acid etching vs Acid etching alone

    Sandblasting will be applied onto the vestibular surfaces of the teeth before applying the etchant;

  • ProcedureAcid Etching only

    Acid etching will be applied onto the vestibular surfaces of the teeth for enamel preparation.

06

What researchers measure

Primary outcomes

  1. To compare the bracket bond failure rate using acid etching with or without sandblasting method for the preparation of enamel.

    Time frame: 6 months

07

Study locations

1 site
  • Bangladesh Medical University
    Dhaka, 1000, Bangladesh
08

References and documents

Study documents

  • Protocol, analysis plan and consent form · Feb 16, 2026

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No — Confidentiality and privacy will be preserved by utilizing unique identifying codes instead of personal identifiers

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 9, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07617480
Lead sponsor
Tanzila Rafique
Responsible party
Tanzila Rafique (Associate Professor, Bangladesh Medical University) — Sponsor-investigator
First posted
Jun 1, 2026
Start date
Mar 1, 2026
Primary completion
Jul 1, 2026
Completion
Sep 1, 2026 (estimated)
Last update
Sep 9, 2026

Study contacts

Mahmood Sajedeen, BDS, FCPS
study director · Bangladesh Medical University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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No contact was published for this record. The registry link below has the sponsor’s details.

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