title: Effects of erbium:yttrium-aluminum-garnet and neodymium:yttrium-aluminum-garnet laser hypersensitivity treatment parameters on the bond strength of self-etch adhesives.
abstract: 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.
authors.affiliation: Department of Conservative Dentistry, Hacettepe University, School of Dentistry, Ankara, Turkey. esra.yazici@hacettepe.edu.tr
authors.forename: E
authors.initials: E
authors.lastname: Yazici
authors.forename: S
authors.initials: S
authors.lastname: Gurgan
authors.forename: N
authors.initials: N
authors.lastname: Gutknecht
authors.forename: S
authors.initials: S
authors.lastname: Imazato
mesh_terms: D003481:Cuspid; D001840:Dental Bonding; D003807:Dentin Sensitivity / Q000628:therapy*; D017220:Dentin-Bonding Agents; D006801:Humans; D066298:In Vitro Techniques; D053844:Lasers, Solid-State; D014092:Tooth Root
chemical_list: D017220:Dentin-Bonding Agents