Optical analysis of the behavior of sealants under mechanical, thermal and chemical stress

Abstract Regarding their resistance five sealants were tested in vitro after experiencing mechanical, thermal and chemical stress. Included for testing were two fluoride varnishes: Fluor Protector [FP] (Ivoclar Vivadent) and Protecto CaF2 Nano One-Step Seal [PN] (BonaDent) and three fluoride-composi...

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Autores principales:	Christina Erbe, Florian Deckers, Irene Schmidtmann, Julia Heider, Heinrich Wehrbein
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b3b8a0a64c40461fb81bfe308af20b45
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spelling	oai:doaj.org-article:b3b8a0a64c40461fb81bfe308af20b452021-12-02T14:21:21ZOptical analysis of the behavior of sealants under mechanical, thermal and chemical stress10.1038/s41598-021-87288-72045-2322https://doaj.org/article/b3b8a0a64c40461fb81bfe308af20b452021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87288-7https://doaj.org/toc/2045-2322Abstract Regarding their resistance five sealants were tested in vitro after experiencing mechanical, thermal and chemical stress. Included for testing were two fluoride varnishes: Fluor Protector [FP] (Ivoclar Vivadent) and Protecto CaF2 Nano One-Step Seal [PN] (BonaDent) and three fluoride-composite filled sealants (with acid etch technique): Clinpro XT Varnish [CP] (3 M Espe), Pro Seal [PS] & Light Bond [LB] (Reliance Orthodontic Products) and a positive control group [CG] Tetric EvoFlow (Ivoclar Vivadent). The sealants were applied on 180 bovine teeth (n = 10/ sealer) in a standardized manner after bracket bonding. Mechanical pressure and its effect by simulating different time points and standardized electric cleaning protocol was tested first. Followed by thermal burden due to varying thermal stress and thirdly change in pH stress imitating chemical exposure were examined separately. A digital microscope and a grid incisal and apical to the brackets (n = 32 fields) was used to standardize the optical analysis. Material loss due to mechanical stress compared to CG (score 0.00) was CP (1.2%), FP (21.5%), LB (22.2%) and PN (81.1%). No significant difference to CG presented PS. Material loss due to thermal stress was CP (0.5%), PS (2%), FP (2.6%), LB (3.1%) and PN (39.9%). Material loss due to chemical stress was FP (1.8%), PS (2.1%), LB (5.5%) and PN (39.6%). No significant difference to CG presented CP. Only PS and CP had optically provable, good resiliance to mechanical, thermal and chemical stress. Significantly poorer outcomes in particular showed PN.Christina ErbeFlorian DeckersIrene SchmidtmannJulia HeiderHeinrich WehrbeinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Christina Erbe Florian Deckers Irene Schmidtmann Julia Heider Heinrich Wehrbein Optical analysis of the behavior of sealants under mechanical, thermal and chemical stress
description	Abstract Regarding their resistance five sealants were tested in vitro after experiencing mechanical, thermal and chemical stress. Included for testing were two fluoride varnishes: Fluor Protector [FP] (Ivoclar Vivadent) and Protecto CaF2 Nano One-Step Seal [PN] (BonaDent) and three fluoride-composite filled sealants (with acid etch technique): Clinpro XT Varnish [CP] (3 M Espe), Pro Seal [PS] & Light Bond [LB] (Reliance Orthodontic Products) and a positive control group [CG] Tetric EvoFlow (Ivoclar Vivadent). The sealants were applied on 180 bovine teeth (n = 10/ sealer) in a standardized manner after bracket bonding. Mechanical pressure and its effect by simulating different time points and standardized electric cleaning protocol was tested first. Followed by thermal burden due to varying thermal stress and thirdly change in pH stress imitating chemical exposure were examined separately. A digital microscope and a grid incisal and apical to the brackets (n = 32 fields) was used to standardize the optical analysis. Material loss due to mechanical stress compared to CG (score 0.00) was CP (1.2%), FP (21.5%), LB (22.2%) and PN (81.1%). No significant difference to CG presented PS. Material loss due to thermal stress was CP (0.5%), PS (2%), FP (2.6%), LB (3.1%) and PN (39.9%). Material loss due to chemical stress was FP (1.8%), PS (2.1%), LB (5.5%) and PN (39.6%). No significant difference to CG presented CP. Only PS and CP had optically provable, good resiliance to mechanical, thermal and chemical stress. Significantly poorer outcomes in particular showed PN.
format	article
author	Christina Erbe Florian Deckers Irene Schmidtmann Julia Heider Heinrich Wehrbein
author_facet	Christina Erbe Florian Deckers Irene Schmidtmann Julia Heider Heinrich Wehrbein
author_sort	Christina Erbe
title	Optical analysis of the behavior of sealants under mechanical, thermal and chemical stress
title_short	Optical analysis of the behavior of sealants under mechanical, thermal and chemical stress
title_full	Optical analysis of the behavior of sealants under mechanical, thermal and chemical stress
title_fullStr	Optical analysis of the behavior of sealants under mechanical, thermal and chemical stress
title_full_unstemmed	Optical analysis of the behavior of sealants under mechanical, thermal and chemical stress
title_sort	optical analysis of the behavior of sealants under mechanical, thermal and chemical stress
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b3b8a0a64c40461fb81bfe308af20b45
work_keys_str_mv	AT christinaerbe opticalanalysisofthebehaviorofsealantsundermechanicalthermalandchemicalstress AT floriandeckers opticalanalysisofthebehaviorofsealantsundermechanicalthermalandchemicalstress AT ireneschmidtmann opticalanalysisofthebehaviorofsealantsundermechanicalthermalandchemicalstress AT juliaheider opticalanalysisofthebehaviorofsealantsundermechanicalthermalandchemicalstress AT heinrichwehrbein opticalanalysisofthebehaviorofsealantsundermechanicalthermalandchemicalstress
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Optical analysis of the behavior of sealants under mechanical, thermal and chemical stress

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