Evaluation of microleakage in Class II composite restorations: Bonded-base and bulk-fill techniques

Background: This study compared microleakage of Class II cavities restored using bonded-base and bulk-fill techniques with different bases.Materials and Methods: In this in vitro study, in 60 extracted human molars, standardized (4 mm × 2 mm × 8 mm) Class II cavities were prepared, such that the gin...

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Autores principales:	Atiyeh Feiz, Marzieh Sajedi, Niloufar Jafari, Edward J. Swift
Formato:	article
Lenguaje:	EN
Publicado:	Wolters Kluwer Medknow Publications 2021
Materias:	composite resin dental leakage flowable composite liner resin-modified glass ionomer bulk-fill composite resin Dentistry RK1-715
Acceso en línea:	https://doaj.org/article/6b29c72c60cd4519a5e732af22bcc209
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spelling	oai:doaj.org-article:6b29c72c60cd4519a5e732af22bcc2092021-11-12T10:10:18ZEvaluation of microleakage in Class II composite restorations: Bonded-base and bulk-fill techniques1735-33272008-025510.4103/1735-3327.328757https://doaj.org/article/6b29c72c60cd4519a5e732af22bcc2092021-01-01T00:00:00Zhttp://www.drjjournal.net/article.asp?issn=1735-3327;year=2021;volume=18;issue=1;spage=89;epage=89;aulast=Feizhttps://doaj.org/toc/1735-3327https://doaj.org/toc/2008-0255Background: This study compared microleakage of Class II cavities restored using bonded-base and bulk-fill techniques with different bases.Materials and Methods: In this in vitro study, in 60 extracted human molars, standardized (4 mm × 2 mm × 8 mm) Class II cavities were prepared, such that the gingival floor was located 1 mm below the CEJ. The teeth were randomly divided into five groups and filled with: (1) Fuji II LC + x-tra fil, (2) Ionoseal + x-tra fil, (3) x-tra base + x-tra fil, (4) Grandio Flow + x-tra fil, and (5) x-tra fil only [control group]; in open-sandwich technique, the base thickness was 1 mm. The bases were coated all gingival floor. Except for the first group, where dentin conditioner was used, the Clearfil SE bond was applied before application of the bases and restorative materials as a bonding agent. After 500 thermocycles between 5°C and 55°C, the specimens were immersed in 0.5% basic fuchsine solution for 24 h. The restored teeth were sectioned, and the dye penetration in gingival floor was observed by a stereomicroscope at ×32. The data were analyzed using Kruskal–Wallis and Mann–Whitney tests in SPSS software. The significance was determined at 0.05 confidence interval.Results: The statistical analysis revealed a significant difference in microleakage among the study groups (P < 0.001). The Ionoseal group followed by the control group (x-tra fil composite) had the greatest microleakage. Except for the Ionoseal group, all other groups had significantly less microleakage than the control group.Conclusion: The use of bonded-base techniques could reduce microleakage, including those in bulk-fill composite restorations.Atiyeh FeizMarzieh SajediNiloufar JafariEdward J. SwiftWolters Kluwer Medknow Publicationsarticlecomposite resindental leakageflowable composite linerresin-modified glass ionomerbulk-fill composite resinDentistryRK1-715ENDental Research Journal, Vol 18, Iss 1, Pp 89-89 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	composite resin dental leakage flowable composite liner resin-modified glass ionomer bulk-fill composite resin Dentistry RK1-715
spellingShingle	composite resin dental leakage flowable composite liner resin-modified glass ionomer bulk-fill composite resin Dentistry RK1-715 Atiyeh Feiz Marzieh Sajedi Niloufar Jafari Edward J. Swift Evaluation of microleakage in Class II composite restorations: Bonded-base and bulk-fill techniques
description	Background: This study compared microleakage of Class II cavities restored using bonded-base and bulk-fill techniques with different bases.Materials and Methods: In this in vitro study, in 60 extracted human molars, standardized (4 mm × 2 mm × 8 mm) Class II cavities were prepared, such that the gingival floor was located 1 mm below the CEJ. The teeth were randomly divided into five groups and filled with: (1) Fuji II LC + x-tra fil, (2) Ionoseal + x-tra fil, (3) x-tra base + x-tra fil, (4) Grandio Flow + x-tra fil, and (5) x-tra fil only [control group]; in open-sandwich technique, the base thickness was 1 mm. The bases were coated all gingival floor. Except for the first group, where dentin conditioner was used, the Clearfil SE bond was applied before application of the bases and restorative materials as a bonding agent. After 500 thermocycles between 5°C and 55°C, the specimens were immersed in 0.5% basic fuchsine solution for 24 h. The restored teeth were sectioned, and the dye penetration in gingival floor was observed by a stereomicroscope at ×32. The data were analyzed using Kruskal–Wallis and Mann–Whitney tests in SPSS software. The significance was determined at 0.05 confidence interval.Results: The statistical analysis revealed a significant difference in microleakage among the study groups (P < 0.001). The Ionoseal group followed by the control group (x-tra fil composite) had the greatest microleakage. Except for the Ionoseal group, all other groups had significantly less microleakage than the control group.Conclusion: The use of bonded-base techniques could reduce microleakage, including those in bulk-fill composite restorations.
format	article
author	Atiyeh Feiz Marzieh Sajedi Niloufar Jafari Edward J. Swift
author_facet	Atiyeh Feiz Marzieh Sajedi Niloufar Jafari Edward J. Swift
author_sort	Atiyeh Feiz
title	Evaluation of microleakage in Class II composite restorations: Bonded-base and bulk-fill techniques
title_short	Evaluation of microleakage in Class II composite restorations: Bonded-base and bulk-fill techniques
title_full	Evaluation of microleakage in Class II composite restorations: Bonded-base and bulk-fill techniques
title_fullStr	Evaluation of microleakage in Class II composite restorations: Bonded-base and bulk-fill techniques
title_full_unstemmed	Evaluation of microleakage in Class II composite restorations: Bonded-base and bulk-fill techniques
title_sort	evaluation of microleakage in class ii composite restorations: bonded-base and bulk-fill techniques
publisher	Wolters Kluwer Medknow Publications
publishDate	2021
url	https://doaj.org/article/6b29c72c60cd4519a5e732af22bcc209
work_keys_str_mv	AT atiyehfeiz evaluationofmicroleakageinclassiicompositerestorationsbondedbaseandbulkfilltechniques AT marziehsajedi evaluationofmicroleakageinclassiicompositerestorationsbondedbaseandbulkfilltechniques AT niloufarjafari evaluationofmicroleakageinclassiicompositerestorationsbondedbaseandbulkfilltechniques AT edwardjswift evaluationofmicroleakageinclassiicompositerestorationsbondedbaseandbulkfilltechniques
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Evaluation of microleakage in Class II composite restorations: Bonded-base and bulk-fill techniques

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