Journal Article

Shear bond strength of fibre-reinforced composite nets using two different adhesive systems

Maria Francesca Sfondrini, Vittorio Cacciafesta and Andrea Scribante

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 33, issue 1, pages 66-70
Published in print February 2011 | ISSN: 0141-5387
Published online June 2010 | e-ISSN: 1460-2210 | DOI: http://dx.doi.org/10.1093/ejo/cjq030
Shear bond strength of fibre-reinforced composite nets using two different adhesive systems

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The purpose of this study was to evaluate the effect of two different adhesive systems (Tetric Flow and Transbond XT) in combination with fibre-reinforced composites (FRC) net (Ever Stick) on the shear bond strength (SBS) of orthodontic brackets.

Eighty bovine permanent mandibular incisors were randomly divided into four equal groups. Stainless steel maxillary central incisor brackets with a 0.018 inch slot (DB Leone) were bonded to the teeth using the two different adhesive systems. Fifty per cent of the brackets were bonded without and 50 per cent with a FRC net under the bracket base. After bonding, all samples were stored in distilled water at room temperature for 24 hours and subsequently tested for SBS.

Analysis of variance indicated significant differences among the various groups. Brackets bonded with FRC nets under the base showed a significantly lower SBS than those bonded without nets (P < 0.05). Moreover, teeth bonded with Transbond XT showed a significantly higher SBS than the other groups. Additionally, significant differences in debond locations [adhesive remnant index (ARI) score] were found among the various groups. Transbond XT can successfully be used for direct bonding of FRC nets, thus improving their SBS values.

Journal Article.  2607 words.  Illustrated.

Subjects: Restorative Dentistry and Orthodontics

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