Publication: Influence of food-simulating liquids on bond strength of brackets bonded with a HEMA-free and HEMA-containing self-etching primer
Authors
Vicente Hernández, Ascensión ; Molina, Sara ; Ortiz Ruiz, Antonio José ; Bravo González, Luis Alberto
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Publisher
EH Angle Education Research Foundation, Inc.
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DOI
https://doi.org/10.2319/032711-216.1
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info:eu-repo/semantics/article
Description
© 2012 by The EH Angle Education and Research Foundation, Inc. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. This document is the Published version of a Published Work that appeared in final form in Angle Orthodontist. To access the final edited and published work see https://doi.org/10.2319/032711-216.1
Abstract
Objective: To evaluate the effect of food-simulating liquids on bond strengths of brackets bonded with a HEMA-free and a HEMA-containing self-etching primer. Materials and Methods: Brackets were bonded to 280 bovine incisors that were divided into two groups: (1) Adper Prompt-L-Pop (Adper PLP)/Transbond-XT and (2) Transbond Plus self-etching primer (TSEP, HEMA-free)/Transbond-XT. Each group was evaluated under different storage conditions: 24 hours in water, thermocycling (T), T/12 weeks in water, T/12 weeks in 10% ethanol, T/12 weeks in 50% ethanol, T/12 weeks in 3% acetic acid, and T/12 weeks in olive oil. Shear bond strength was measured with a universal test machine. Results: TSEP and Adper PLP showed a significantly higher bond strength at 24 hours than at T/12 weeks in 50% ethanol (P = .000). For Adper PLP, the bond strength at 24 hours was significantly higher than T/12 weeks in water (P = .000). Significant differences were not detected between the two bonding procedures for the different storage conditions (P > .05). Conclusion: Owing to its hydrophilic nature, the bond strength produced by Adper PLP (a HEMA-containing self-etching primer) decreased significantly after T/12 weeks in water. Brackets bonded with both TSEP and Adper PLP showed significantly higher bond strengths at 24 hours than at T/12 weeks in 50% ethanol, probably due to the effect of ethanol at 50% on Transbond-XT.
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Citation
The Angle Orthodontist (2012) 82 (2): 346–350
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