Erschienen in:
28.09.2021 | Original Article
Effect of using different component combinations for orthodontic bracket bonding with self-etch primers
verfasst von:
Dr. Isabel Knaup, DDS, Eva Weber, DDS, Antonia Böddeker, DDS, Katrin Tempel, DDS, Marcia Viviane Rückbeil, MSc, Jenny Rosa Bartz, DDS, Asisa Bastian, PhD, Yvonne Wagner, DDS, PhD, Michael Wolf, DDS, PhD
Erschienen in:
Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie
|
Sonderheft 2/2023
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Abstract
Purpose
To evaluate bonding quality for orthodontic bracket bonding with different component combinations of self-etch primers in vitro.
Methods
Metallic brackets were bonded to bovine lower incisors and assigned to groups. Group 1: comparison of self-etch (Transbond™ Plus, 3M™ Unitek, Neuss, Germany, n = 30; BrackFix® primer SE, VOCO®, Cuxhaven, Germany, n = 20) and etch-and-rinse bonding systems (Transbond™ XT, n = 20; BrackFix®, n = 20); group 2: comparison of different self-etch primer (Transbond™ Plus; BrackFix® primer SE) and adhesive (Transbond™ XT, n = 20; BrackFix®, n = 20) product combinations; group 3: testing cyclic fatigue bond strength of self-etch bonding systems (Transbond™ Plus, n = 20; BrackFix® primer SE, n = 20). All teeth were tested for shear bond strength according to the DIN-13990 standard, the adhesive remnant index (ARI) and enamel fractures were determined microscopically (10 × magnification).
Results
The mean shear bond strength of the self-etch (Transbond™ Plus: 16.38 ± 3.68 MPa; BrackFix® primer SE: 16.24 ± 1.73 MPa) and etch-and-rinse bonding systems (Transbond™ XT: 18.45 ± 2.56 MPa; BrackFix®: 17 ± 5.2 MPa) were of a clinically adequate order of magnitude (≥ 6–10 MPa) and were not statistically different. The component combination BrackFix® primer SE/Transbond™ XT adhesive led to a significantly lower shear bond strength (11.99 ± 3.68 MPa). There were no significant differences between static and fatigue shear bond strengths of self-etch bonding systems. Mean ARI scores mostly ranged between 4 and 5. The combination of the self-etch primer Transbond™ Plus with the BrackFix® adhesive led to a significantly increased enamel fracture rate.
Conclusions
Based on the present findings bond strength of self-etch primers was equal to etch-and-rinse primers for bracket bonding. Combining different self-etch bonding systems might alter the clinical performance.