Combined effect of smear layer characteristics and hydrostatic pupal pressure on dentin bond strength of HEMA-free and HEMA-containing adhesives

Objective This study evaluated the combined effect of smear layer characteristics with hydrostatic pulpal pressure (PP) on bond strength and nanoleakage expression of HEMA-free and -containing self-etch adhesives. Methods Flat dentine surfaces were obtained from extracted human molars. Smea...

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Main Authors:	Mahdan, Mohd. Haidil Akmal, Nakajima, Masatoshi, Foxton, Richard M., Tagami, Junji
Format:	Article
Language:	English
Published:	Elsevier 2013
Subjects:	RK Dentistry
Online Access:	http://irep.iium.edu.my/44212/ http://irep.iium.edu.my/44212/ http://irep.iium.edu.my/44212/ http://irep.iium.edu.my/44212/1/published_paper.pdf

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spelling	iium-442122015-08-13T01:43:48Z http://irep.iium.edu.my/44212/ Combined effect of smear layer characteristics and hydrostatic pupal pressure on dentin bond strength of HEMA-free and HEMA-containing adhesives Mahdan, Mohd. Haidil Akmal Nakajima, Masatoshi Foxton, Richard M. Tagami, Junji RK Dentistry Objective This study evaluated the combined effect of smear layer characteristics with hydrostatic pulpal pressure (PP) on bond strength and nanoleakage expression of HEMA-free and -containing self-etch adhesives. Methods Flat dentine surfaces were obtained from extracted human molars. Smear layers were created by grinding with #180- or #600-SiC paper. Three HEMA-free adhesives (Xeno V, G Bond Plus, Beautibond Multi) and two HEMA-containing adhesives (Bond Force, Tri-S Bond) were applied to the dentine surfaces under hydrostatic PP or none. Dentine bond strengths were determined using the microtensile bond test (μTBS). Data were statistically analyzed using three- and two-way ANOVA with Tukey post hoc comparison test. Nanoleakage evaluation was carried out under a scanning electron microscope (SEM). Results Coarse smear layer preparation and hydrostatic PP negatively affected the μTBS of HEMA-free and -containing adhesives, but there were no significant differences. The combined experimental condition significantly reduced μTBS of the HEMA-free adhesives, while the HEMA-containing adhesives exhibited no significant differences. Two-way ANOVA indicated that for HEMA-free adhesives, there were significant interactions in μTBS between smear layer characteristics and pulpal pressure, while for HEMA-containing adhesives, there were no significant interactions between them. Nanoleakage formation within the adhesive layers of both adhesive systems distinctly increased in the combined experimental group. Conclusion The combined effect of coarse smear layer preparation with hydrostatic PP significantly reduced the μTBS of HEMA-free adhesives, while in HEMA-containing adhesives, these effects were not obvious. Clinical significance Smear layer characteristics and hydrostatic PP would additively compromise dentine bonding of self-etch adhesives, especially HEMA-free adhesives. Elsevier 2013 Article PeerReviewed application/pdf en http://irep.iium.edu.my/44212/1/published_paper.pdf Mahdan, Mohd. Haidil Akmal and Nakajima, Masatoshi and Foxton, Richard M. and Tagami, Junji (2013) Combined effect of smear layer characteristics and hydrostatic pupal pressure on dentin bond strength of HEMA-free and HEMA-containing adhesives. Journal of Dentistry, 41 (10). pp. 861-871. ISSN 0300-5712 http://www.sciencedirect.com/science/article/pii/S0300571213001711 10.1016/j.jdent.2013.07.002
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	RK Dentistry
spellingShingle	RK Dentistry Mahdan, Mohd. Haidil Akmal Nakajima, Masatoshi Foxton, Richard M. Tagami, Junji Combined effect of smear layer characteristics and hydrostatic pupal pressure on dentin bond strength of HEMA-free and HEMA-containing adhesives
description	Objective This study evaluated the combined effect of smear layer characteristics with hydrostatic pulpal pressure (PP) on bond strength and nanoleakage expression of HEMA-free and -containing self-etch adhesives. Methods Flat dentine surfaces were obtained from extracted human molars. Smear layers were created by grinding with #180- or #600-SiC paper. Three HEMA-free adhesives (Xeno V, G Bond Plus, Beautibond Multi) and two HEMA-containing adhesives (Bond Force, Tri-S Bond) were applied to the dentine surfaces under hydrostatic PP or none. Dentine bond strengths were determined using the microtensile bond test (μTBS). Data were statistically analyzed using three- and two-way ANOVA with Tukey post hoc comparison test. Nanoleakage evaluation was carried out under a scanning electron microscope (SEM). Results Coarse smear layer preparation and hydrostatic PP negatively affected the μTBS of HEMA-free and -containing adhesives, but there were no significant differences. The combined experimental condition significantly reduced μTBS of the HEMA-free adhesives, while the HEMA-containing adhesives exhibited no significant differences. Two-way ANOVA indicated that for HEMA-free adhesives, there were significant interactions in μTBS between smear layer characteristics and pulpal pressure, while for HEMA-containing adhesives, there were no significant interactions between them. Nanoleakage formation within the adhesive layers of both adhesive systems distinctly increased in the combined experimental group. Conclusion The combined effect of coarse smear layer preparation with hydrostatic PP significantly reduced the μTBS of HEMA-free adhesives, while in HEMA-containing adhesives, these effects were not obvious. Clinical significance Smear layer characteristics and hydrostatic PP would additively compromise dentine bonding of self-etch adhesives, especially HEMA-free adhesives.
format	Article
author	Mahdan, Mohd. Haidil Akmal Nakajima, Masatoshi Foxton, Richard M. Tagami, Junji
author_facet	Mahdan, Mohd. Haidil Akmal Nakajima, Masatoshi Foxton, Richard M. Tagami, Junji
author_sort	Mahdan, Mohd. Haidil Akmal
title	Combined effect of smear layer characteristics and hydrostatic pupal pressure on dentin bond strength of HEMA-free and HEMA-containing adhesives
title_short	Combined effect of smear layer characteristics and hydrostatic pupal pressure on dentin bond strength of HEMA-free and HEMA-containing adhesives
title_full	Combined effect of smear layer characteristics and hydrostatic pupal pressure on dentin bond strength of HEMA-free and HEMA-containing adhesives
title_fullStr	Combined effect of smear layer characteristics and hydrostatic pupal pressure on dentin bond strength of HEMA-free and HEMA-containing adhesives
title_full_unstemmed	Combined effect of smear layer characteristics and hydrostatic pupal pressure on dentin bond strength of HEMA-free and HEMA-containing adhesives
title_sort	combined effect of smear layer characteristics and hydrostatic pupal pressure on dentin bond strength of hema-free and hema-containing adhesives
publisher	Elsevier
publishDate	2013
url	http://irep.iium.edu.my/44212/ http://irep.iium.edu.my/44212/ http://irep.iium.edu.my/44212/ http://irep.iium.edu.my/44212/1/published_paper.pdf
first_indexed	2023-09-18T21:02:53Z
last_indexed	2023-09-18T21:02:53Z
_version_	1777410740719714304

Combined effect of smear layer characteristics and hydrostatic pupal pressure on dentin bond strength of HEMA-free and HEMA-containing adhesives

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