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Experimental study of brackets adhesion with a novel enamel-protective material compared with conventional etching
Alberto-Carlos Cruz-González1,2,3, Edgar Delgado-Mejía4,5
1DDS, Universidad de Cartagena, Colombia.
The Saudi Dental Journal
|January 11, 2020
Summary
A new enamel conditioning material shows promise for orthodontic bracket adhesion, offering improved bond strength without the damage caused by traditional phosphoric acid etching. This remineralizing approach enhances adhesion while preserving enamel integrity.
Area of Science:
- Biomaterials science
- Dental materials science
- Orthodontic materials
Background:
- Reliable adhesion is crucial for orthodontic treatment success.
- Current adhesion preparation methods, like phosphoric acid etching, can damage enamel and cause loss during bracket removal.
- Novel materials are needed to improve adhesion while minimizing iatrogenic damage.
Purpose of the Study:
- To compare the shear bond strength of metallic brackets bonded to enamel using a new non-damaging, remineralizing material versus traditional 37% phosphoric acid etching.
- To evaluate the effectiveness of a novel enamel conditioning agent.
Main Methods:
- 75 premolars were divided into three groups: experimental (EX), phosphoric acid (PA), and no treatment (NT).
- Metallic brackets were bonded using Transbond XT adhesive and polymerized.
- Shear bond strength was measured using a universal testing machine.
Main Results:
- Significant differences in shear bond strength were observed between groups.
- Phosphoric acid etching (PA) yielded the highest bond strength (32.1 MPa), followed by the experimental method (EX) (9.7 MPa), and the no treatment group (NT) (1.4 MPa).
Conclusions:
- The experimental material forms calcium phosphate crystals on the enamel surface.
- This novel material improves bond strength compared to untreated enamel.
- The experimental material offers a potentially less damaging alternative to phosphoric acid etching for orthodontic bonding.
