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Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie

Published in:

01-09-2014 | Original article

Shear bond strength of a self-adhering flowable composite when used for lingual retainer bonding

Authors: I. Veli, M. Akin, E. Kucukyilmaz, Prof. T. Uysal

Published in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie | Issue 5/2014

Abstract

Objective

The goal of this work was to assess the shear bond strength (SBS) and fracture mode of a self-adhering flowable composite when used after thermocycling for lingual retainer bonding.

Materials and methods

A total of 80 human mandibular incisor teeth were categorized into four equal groups: group 1: Vertise™ Flow (VF) without acid etching; group 2: VF with acid etching; group 3: VF with a self-etching bonding agent accompanied by an additional acid etching; group 4: Transbond LR control. Either VF or Transbond LR was applied to the lingual surface of the teeth by packing the material into cylindrical plastic matrices to simulate the lingual retainer bonding area. After all teeth were thermocycled (5000 cycles, 5 and 55 °C), fracture modes were examined under ×20 magnification. The SBS data were assessed via analysis of variance (ANOVA) and Tukey’s tests. Fracture modes were analyzed by the χ² test at a significance level of 0.05.

Results

Statistically significant differences in SBS values between groups (p < 0.001) were observed. Group 4 exhibited the highest (14.63 ± 1.36 MPa) and group 1 the lowest SBS (2.67 ± 1.35 MPa) values. Statistically significant differences were noted in fracture modes between groups 1, 3, and 4 (p < 0.001). In all the self-adhering flowable composite groups, the adhesive type (tooth–composite interface) fracture occurred more frequently than cohesive and mixed-type fractures.

Conclusion

When applied to bond lingual retainers to unetched enamel or with self-etching bonding agent accompanied by an additional acid etching, Vertise™ Flow resulted in a significant decrease in bond strength.

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Title: Shear bond strength of a self-adhering flowable composite when used for lingual retainer bonding
Authors: I. Veli
M. Akin
E. Kucukyilmaz
Prof. T. Uysal
Publication date: 01-09-2014
Publisher: Springer Berlin Heidelberg
Published in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie / Issue 5/2014
Print ISSN: 1434-5293
Electronic ISSN: 1615-6714
DOI: https://doi.org/10.1007/s00056-014-0231-y

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Shear bond strength of a self-adhering flowable composite when used for lingual retainer bonding

Abstract

Objective

Materials and methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Objective

Materials and methods

Results

Conclusion

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