Micro-abrasive Blasting vs Acid Etching of Orthodontic Bracket Bases

Micro-abrasive Blasting vs Acid Etching of Orthodontic Bracket Bases: A Scanning Electron Microscope Study and an Eighteen Month Randomized Clinical Control

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04456114

Enrollment

340

Registered

2020-07-02

Start date

2018-06-01

Completion date

2020-01-31

Last updated

2020-07-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Orthodontic Appliances

Brief summary

To describe a method of acid etching the base of a bracket, and to compare the bond failures between micro-abrasive blasted (sandblasted) brackets and acid etched brackets over an eighteen month period

Detailed description

The aims of this randomized control trial are: 1. To describe a method to chemically etch the bases of stainless steel orthodontic brackets. 2. To observe the changes in the micro-structure of the brackets with sandblasted bases and acid-etched bases under an electron microscope. 3. To compare the failure of orthodontic brackets with a chemical etched base versus a sandblasted base bonded with composite using the conventional acid etch technique, over a follow-up of 18 months

Interventions

DEVICEAcid etched brackets

The brackets will be bonded to the teeth with composite on the same patient in a split mouth design and observed for bracket debonding for 18 months

DEVICESandblasted brackets

The brackets will be bonded to the teeth with composite on the same patient in a split mouth design and observed for bracket debonding for 18 months

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Intervention model description

parallel-group, split mouth, triple blinded, randomized control trial

Eligibility

Sex/Gender

ALL

Healthy volunteers

Yes

Inclusion criteria

* Patients about to undergo fixed orthodontic therapy

Exclusion criteria

* Patients with cavities, history of fixed orthodontic therapy, recent bleaching

Design outcomes

Primary

Measure	Time frame	Description
Bond Failure Rate	18 months after placement of brackets on the teeth	To compare the bond failure rates between acid etched and sandblasted brackets. Done by calculating and comparing the percentages of bracket breakages between the acid etched and sandblasted bracket quadrants.

Countries

Pakistan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026