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

Abstract

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.

Effect of different preventive agents on bracket shear bond strength: in vitro study

“…In addition, Park et al [24] reached a similar conclusion regardless of the adhesive system used for bond brackets on the teeth. Furthermore, Çehreli et al [25] reported that the application of CPP-ACPF before acid-etching has no effect on bracket SBS when using self-etching systems, but when applying its non-fluoride version CPP-ACP, significant decrease in bracket SBS was evident. Contradictory to our result, Kecik et al [28] observed that the application of CPP-ACP alone or combined with acidulated phosphate fluoride (APF) has shown significant increase in the SBS of orthodontic brackets.…”

Effect of remineralizing agents on bond strength of orthodontic brackets: an in vitro study

“…Recently, many authors have advocated CPP-ACP and CPP-ACP-F as the preventive agents for white spot lesions occurring during orthodontic treatment [19,20]. In present literature, many studies have evaluated the effect of CPP-ACP on the SBS of orthodontic brackets, but very limited studies are conducted to evaluate the effect of combination of these two agents on the SBS of orthodontic brackets [13,14,17,21]. So, this study was conducted to evaluate the effect of CPP-ACP and CPP-ACP-F on the SBS of orthodontic brackets bonded with two different adhesive systems.…”

Effects of Different Demineralization‐Inhibiting Methods on the Shear Bond Strength of Glass‐Ceramics

“…The effect of WSL treatment on the SBS of orthodontic brackets bonded to demineralized human enamel has been extensively investigated . The efficacy of such preventive methods should also be tested against the negative effects of WSLs on glass‐ceramic bonding.…”

“…The effect of WSL treatment on the SBS of orthodontic brackets bonded to demineralized human enamel has been extensively investigated. 8,31,33,34 The efficacy of such preventive methods should also be tested against the negative effects of WSLs on glass-ceramic bonding. Within the limitations of this in vitro study, the null hypothesis was rejected because the demineralization-inhibiting methods affected the SBS of porce-lain discs bonded to demineralized enamel.…”