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CC BY-NC-ND 4.0 · European Journal of General Dentistry 2020; 9(01): 28-32
DOI: 10.4103/ejgd.ejgd_115_19
Original Article

Effect of casein phosphopeptide-amorphous calcium phosphate and erbium:Yttrium–Aluminium–Garnet laser on shear bond strength to demineralized dentin

Horieh Moosavi
1   Department of Restorative and Cosmetic Dentistry, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
2   Dental Materials Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
,
Atefeh Nemati-Karimooy
1   Department of Restorative and Cosmetic Dentistry, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
3   Department of Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Abstract

Objective: The aim of this in vitro study was to investigate the effect of casein phosphopeptide–amorphous calcium phosphate (CPP-ACP)-containing paste (MI Paste) and erbium:yttrium–aluminum–garnet (Er:YAG) laser radiation on the shear bond strength (SBS) of an etch-and-rinse (E and R) adhesives to demineralized dentin. Materials and Methods: Forty-eight carries-free human dentin surfaces were prepared and demineralized using acidic solutions. Then, the samples were randomly divided into four groups (n = 12) receiving different surface treatments. Group A (control group): no additional treatment, Group B: 3 min application of a CPP-ACP-containing cream (MI Paste), Group C: irradiation of Er:YAG laser, and Group D: irradiation of Er:YAG laser combined with 3 min application of CPP-ACP-containing cream (MI paste). Then, a composite cylinder (Filtek™ Ultimate, 3M ESPE) bonded to the surfaces using E and R adhesives (single bond) and the SBS was measured. The SBS data were analyzed using the one-way analysis of variance test followed by Tukey post hoc by SPSS software. Results: The highest SBS to demineralized dentin was observed after the application of CPP-ACP-containing paste (MI paste) without laser radiation (17.14 ± 2.07). The second highest SBS value showed in control group (11.21 ± 1.65) in which demineralized dentin received no additional treatment. However, the application of MI paste combined with Er:YAG laser irradiation resulted in the higher SBS (8.23 ± 1.02) than laser irradiation alone (5.26 ± 1.02), even though both were lower than control group. Conclusions: The application of CPP-ACP-containing paste (MI paste) could increase the SBS of E and R adhesives to demineralized dentin. Furthermore, laser irradiation with and without CPP-ACP application has an adverse effect on SBS.

Keywords

Casein phosphopeptide–amorphous calcium phosphate - demineralized dentin - erbium:yttrium–aluminum–garnet laser - etch-and-rinse adhesives - shear bond strength

Financial support and sponsorship

Nil.




Publication History

Article published online:
01 November 2021

© 2020. European Journal of General Dentistry. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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