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

NCT07617480 | Enrolling By Invitation DMC

• 1 other identifier: BMU/2026/1641
• Study Type: interventional
• Target: 15
• Locations: 1 country
• Sites: 1

Brief 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 .

Conditions

Dental Etching; Dental Bonding; Acid Etching; Acid Etching, Dental; Dental Acid Etching

Keywords

Acid etching; Sandblasting; Orthodontic bracket; Enamel preparation; Bond failure

Outcome Measures

Primary Outcomes (1)

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

  6 months

Study Arms (2)

Sandblasting

ACTIVE COMPARATOR

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

Procedure: Sandblasting with acid etching vs Acid etching alone

Acid Etching Alone

ACTIVE COMPARATOR

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

Procedure: Acid Etching only

Interventions

Sandblasting with acid etching vs Acid etching alone PROCEDURE

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

Sandblasting

Acid Etching only PROCEDURE

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

Acid Etching Alone

Eligibility Criteria

• Age: 18 Years - 64 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

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

You may not qualify if:

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

Sponsors & Collaborators

• Tanzila Rafique: lead

Study Sites (1)

Bangladesh Medical University

Dhaka, 1000, Bangladesh

Location

Study Officials

• Mahmood Sajedeen, BDS, FCPS

  Bangladesh Medical University

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Associate Professor

Model Details: Split mouth design.

Study Record Dates

• First Submitted: May 18, 2026
• First Posted: June 1, 2026
• Study Start: March 1, 2026
• Primary Completion (Estimated): July 1, 2026
• Study Completion (Estimated): September 1, 2026
• Last Updated: June 1, 2026

Record last verified: 2026-05

Data Sharing

• IPD Sharing: Will not share

Locations

BA (1)