18 April 2016 Short-pulse Er:YAG laser increases bond strength of composite resin to sound and eroded dentin
Author Affiliations +
Abstract
This study evaluated the influence of the irradiation with a short-pulse Er:YAG laser on the adhesion of composite resin to sound and eroded dentin (SD and ED). Forty-six samples of occlusal dentine, obtained from human molars, had half of their surface protected, while the other half was submitted to erosive cycles. Afterward, 23 samples were irradiated with Er:YAG laser, resulting in four experimental groups: SD, sound irradiated dentine (SID—Er:YAG, 50  μs, 2 Hz, 80 mJ, and 12.6  J/cm2), ED, and eroded irradiated dentin (EID—erosion + Er:YAG laser). A self-etching adhesive system was used, and then cylinders of composite resin were prepared. A microshear bond strength test was performed after 24 h storage (n=20). The morphology of SD and ED, with or without Er:YAG laser irradiation, was evaluated under scanning electron microscopy (n=3). Bond strength values (MPa) were subjected to analysis of variance followed by Tukey’s test. Statistically significant differences were found among the experimental groups: SD (9.76±3.39  B), SID (12.77±5.09 A), ED (5.12±1.72 D), and EID (7.62±3.39 C). Even though erosion reduces the adhesion to dentin, the surface irradiation with a short-pulse Er:YAG laser increases adhesion to both ED and SD.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Maria Cecília Pereira Cersosimo, Maria Cecília Pereira Cersosimo, Adriana Bona Matos, Adriana Bona Matos, Roberta Souza D’Almeida Couto, Roberta Souza D’Almeida Couto, Márcia Martins Marques, Márcia Martins Marques, Patricia Moreira de Freitas, Patricia Moreira de Freitas, } "Short-pulse Er:YAG laser increases bond strength of composite resin to sound and eroded dentin," Journal of Biomedical Optics 21(4), 048001 (18 April 2016). https://doi.org/10.1117/1.JBO.21.4.048001 . Submission:
JOURNAL ARTICLE
6 PAGES


SHARE
RELATED CONTENT

How to bond to root canal dentin
Proceedings of SPIE (January 13 2014)
Raman study of human dentin irradiated with Er:YAG laser
Proceedings of SPIE (September 09 2004)

Back to Top