Effect of high-power-laser with and without graphite coating on bonding of resin cement to lithium disilicate ceramic

Abstract The present study evaluated the effect of different high-power-laser surface treatments on the bond strength between resin cement and disilicate ceramic. Lithium disilicate ceramic specimens with truncated cones shape were prepared and divided into 5 groups: HF (hydrofluoric acid-etching),...

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Autores principales:	Fernanda A. Feitosa, Rodrigo M. de Araújo, Franklin R. Tay, Lina Niu, César R. Pucci
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1855e5d8d69e4846b617e277cb360014
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spelling	oai:doaj.org-article:1855e5d8d69e4846b617e277cb3600142021-12-02T15:04:58ZEffect of high-power-laser with and without graphite coating on bonding of resin cement to lithium disilicate ceramic10.1038/s41598-017-17808-x2045-2322https://doaj.org/article/1855e5d8d69e4846b617e277cb3600142017-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-17808-xhttps://doaj.org/toc/2045-2322Abstract The present study evaluated the effect of different high-power-laser surface treatments on the bond strength between resin cement and disilicate ceramic. Lithium disilicate ceramic specimens with truncated cones shape were prepared and divided into 5 groups: HF (hydrofluoric acid-etching), Er:YAG laser + HF, Graphite + Er:YAG laser + HF, Nd:YAG laser + HF, and Graphite + Nd:YAG laser + HF. The treated ceramic surfaces were characterized with scanning electron microscopy and surface roughness measurement. Hourglasses-shaped ceramic- resin bond specimens were prepared, thermomechanically cycled and stressed to failure under tension. The results showed that for both the factors “laser” and “graphite”, statistically significant differences were observed (p < 0.05). Multiple-comparison tests performed on the “laser” factor were in the order: Er:YAG > Nd:YAG (p < 0.05), and on the “graphite” factor were in the order: graphite coating < without coating (p < 0.05). The Dunnett test showed that Er:YAG + HF had significantly higher tensile strength (p = 0.00). Higher surface roughness was achieved after Er:YAG laser treatment. Thus Er:YAG laser treatment produces higher bond strength to resin cement than other surface treatment protocols. Surface-coating with graphite does not improve bonding of the laser-treated lithium disilicate ceramic to resin cement.Fernanda A. FeitosaRodrigo M. de AraújoFranklin R. TayLina NiuCésar R. PucciNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Fernanda A. Feitosa Rodrigo M. de Araújo Franklin R. Tay Lina Niu César R. Pucci Effect of high-power-laser with and without graphite coating on bonding of resin cement to lithium disilicate ceramic
description	Abstract The present study evaluated the effect of different high-power-laser surface treatments on the bond strength between resin cement and disilicate ceramic. Lithium disilicate ceramic specimens with truncated cones shape were prepared and divided into 5 groups: HF (hydrofluoric acid-etching), Er:YAG laser + HF, Graphite + Er:YAG laser + HF, Nd:YAG laser + HF, and Graphite + Nd:YAG laser + HF. The treated ceramic surfaces were characterized with scanning electron microscopy and surface roughness measurement. Hourglasses-shaped ceramic- resin bond specimens were prepared, thermomechanically cycled and stressed to failure under tension. The results showed that for both the factors “laser” and “graphite”, statistically significant differences were observed (p < 0.05). Multiple-comparison tests performed on the “laser” factor were in the order: Er:YAG > Nd:YAG (p < 0.05), and on the “graphite” factor were in the order: graphite coating < without coating (p < 0.05). The Dunnett test showed that Er:YAG + HF had significantly higher tensile strength (p = 0.00). Higher surface roughness was achieved after Er:YAG laser treatment. Thus Er:YAG laser treatment produces higher bond strength to resin cement than other surface treatment protocols. Surface-coating with graphite does not improve bonding of the laser-treated lithium disilicate ceramic to resin cement.
format	article
author	Fernanda A. Feitosa Rodrigo M. de Araújo Franklin R. Tay Lina Niu César R. Pucci
author_facet	Fernanda A. Feitosa Rodrigo M. de Araújo Franklin R. Tay Lina Niu César R. Pucci
author_sort	Fernanda A. Feitosa
title	Effect of high-power-laser with and without graphite coating on bonding of resin cement to lithium disilicate ceramic
title_short	Effect of high-power-laser with and without graphite coating on bonding of resin cement to lithium disilicate ceramic
title_full	Effect of high-power-laser with and without graphite coating on bonding of resin cement to lithium disilicate ceramic
title_fullStr	Effect of high-power-laser with and without graphite coating on bonding of resin cement to lithium disilicate ceramic
title_full_unstemmed	Effect of high-power-laser with and without graphite coating on bonding of resin cement to lithium disilicate ceramic
title_sort	effect of high-power-laser with and without graphite coating on bonding of resin cement to lithium disilicate ceramic
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/1855e5d8d69e4846b617e277cb360014
work_keys_str_mv	AT fernandaafeitosa effectofhighpowerlaserwithandwithoutgraphitecoatingonbondingofresincementtolithiumdisilicateceramic AT rodrigomdearaujo effectofhighpowerlaserwithandwithoutgraphitecoatingonbondingofresincementtolithiumdisilicateceramic AT franklinrtay effectofhighpowerlaserwithandwithoutgraphitecoatingonbondingofresincementtolithiumdisilicateceramic AT linaniu effectofhighpowerlaserwithandwithoutgraphitecoatingonbondingofresincementtolithiumdisilicateceramic AT cesarrpucci effectofhighpowerlaserwithandwithoutgraphitecoatingonbondingofresincementtolithiumdisilicateceramic
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Effect of high-power-laser with and without graphite coating on bonding of resin cement to lithium disilicate ceramic

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