Official Journal of The Academy of Osseointegration
Dentin Bond Strength: Influence of Er:YAG and Nd:YAG Lasers
Carolina Ferraz Ribeiro, DDS, MS/Sérgio Eduardo de Paiva Gonçalves, DDS, MS, PhD/Karen Cristina Kazue Yui, DDS, MS, PhD/Alessandra Bühler Borges, DDS, MS, PhD/Daphne Câmara Barcellos, DDS, MS/Ricardo Brayner, DDS
PMID: 23593631
DOI: 10.11607/prd.1096
The aim of this study was to investigate the effects of Er:YAG and Nd:YAG lasers on the shear bond strength of composite resin to dentin. The coronal portion of 56 human molars was divided into three parts, and the dentin thickness was standardized at 2 mm. A 3-mm hole was marked in the center of each tooth with sealing tape paper. The specimens (n = 14) were then divided into four groups: (1) acid etching + Single Bond (SB) (control), (2) acid etching + SB + Nd:YAG laser irradiation (before adhesive curing), (3) thermal etching with the Er:YAG laser + SB, and (4) thermal etching with the Er:YAG laser + SB + Nd:YAG laser irradiation (before adhesive curing). A composite resin cylinder was built into the delimited area for conducting the shear bond strength test on the universal testing machine. The means ± standard deviations were: group 1, 17.05 ± 4.15 MPa; group 2, 16.90 ± 3.36 MPa; group 3, 12.12 ± 3.85 MPa; and group 4, 12.92 ± 2.73 MPa. Groups 1 and 2 presented significantly higher values than groups 3 and 4. It was concluded that conventional etching with 37% phosphoric acid yielded significantly higher bond strength values compared to thermal etching with the Er:YAG laser. The Nd:YAG laser did not significantly influence the bond strength. (Int J Periodontics Restorative Dent 2013;33:373–377. doi: 10.11607/prd.1096)
© 2020 Quintessence Publishing Co, Inc |
PRD Home Current Issue Ahead of Print Archive Author Guidelines About |
Submission Form Submit Reprints Permission Advertising |
Quintessence Home Terms of Use Privacy Policy About Us Contact Us Help |