Journal Article

Effects of a fluoride-containing casein phosphopeptide–amorphous calcium phosphate complex on the shear bond strength of orthodontic brackets

Sevi Burçak Çehreli, Çağla Şar, Ömür Polat-Özsoy, Bahtiyar Ünver and Serhat Özsoy

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 34, issue 2, pages 193-197
Published in print April 2012 | ISSN: 0141-5387
Published online February 2011 | e-ISSN: 1460-2210 | DOI: http://dx.doi.org/10.1093/ejo/cjq183
Effects of a fluoride-containing casein phosphopeptide–amorphous calcium phosphate complex on the shear bond strength of orthodontic brackets

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The purpose of this study was to investigate the effects of enamel pre-treatment with a new fluoride-containing casein phosphopeptide–amorphous calcium phosphate (CPP–ACP) complex on the shear bond strength (SBS) of brackets bonded with etch-and-rinse or self-etching adhesive systems.

The material comprised 66 extracted human premolars randomly divided into six equal groups with respect to the enamel pre-treatment and adhesive system employed: 1. No pre-treatment and brackets bonded with the etch-and-rinse adhesive system (Transbond XT). 2. Pre-treatment with fluoride-containing CPP–ACP paste (MI Paste Plus) and Transbond XT. 3. Pre-treatment with non-fluoride CPP–ACP paste (MI Paste) and Transbond XT.4. No pre-treatment and brackets bonded with the self-etching adhesive system (Transbond Plus). 5 and 6. Enamel pre-treated as for groups 2 and 3, respectively, and the Transbond Plus. Bonded specimens were subjected to thermal cycling (×1000) before SBS testing. The residual adhesive on the enamel surface was evaluated after debonding with the adhesive remnant index (ARI). Data evaluation was made using one-way analysis of variance and Tukey test for SBS results, and Kruskal–Wallis test for ARI results.

The results showed that enamel pre-treatment with either fluoride or non-fluoride CPP–ACP paste had no significant effect on the SBS of the self-etching adhesive system (P > 0.05). Enamel pre-treatment with non-fluoride CPP–ACP in group 3 significantly reduced the SBS of the etch-and-rinse adhesive (P < 0.001), while pre-treatment with fluoride-containing CPP–ACP paste (groups 2 and 5) did not affect debonding values (P > 0.05). The fluoride-containing CPP–ACP did not compromise the SBS of brackets bonded with the tested etch-and-rinse and self-etching systems, but its non-fluoride version significantly decreased the SBS of the etch-and-rinse adhesive system.

Journal Article.  2980 words. 

Subjects: Restorative Dentistry and Orthodontics

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