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Effects of erbium:yttrium-aluminum-garnet and neodymium:yttrium-aluminum-garnet laser hypersensitivity treatment parameters on the bond strength of self-etch adhesives



Effects of erbium:yttrium-aluminum-garnet and neodymium:yttrium-aluminum-garnet laser hypersensitivity treatment parameters on the bond strength of self-etch adhesives



Lasers in Medical Science 25(4): 511-516



This in vitro study evaluated the shear bond strength (SBS) of two self-etch adhesives to coronal and root dentin treated with erbium:yttrium-aluminum-garnet (Er:YAG) or neodymium:yttrium-aluminum-garnet (Nd:YAG) lasers for dentin hypersensitivity. The coronal and root dentin surfaces of 60 extracted human cuspids were divided into three groups (n = 20): (1) control (without treatment); (2) treated with Er:YAG; (3) treated with Nd:YAG laser and a one-step (S3) or two-step self-etch adhesive (SE). A nano-composite was applied and SBS tests were performed. The mean SBS values were calculated, failure modes were determined, and data were subjected to statistical analysis (P = 0.05). Control/SE exhibited higher values than did control/S3 and Nd:YAG/S3 on coronal dentin (P < 0.05). No significant differences were observed between the SE and S3 groups in root dentin (P > 0.05). Comparisons of two dentin substrates did not show any difference except control/SE (P < 0.05). The failure modes were mainly adhesive. The SBSs of self-etch adhesives to Er:YAG or Nd:YAG laser-treated surfaces were comparable with control for both coronal and root dentin.

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Accession: 052865560

Download citation: RISBibTeXText

PMID: 19475475

DOI: 10.1007/s10103-009-0682-3


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