Header

UZH-Logo

Maintenance Infos

Influence of light-curing mode on the erosion preventive effect of three different resin-based surface sealants


Wegehaupt, Florian J; Tauböck, Tobias T; Sener, Beatrice; Attin, Thomas (2012). Influence of light-curing mode on the erosion preventive effect of three different resin-based surface sealants. International Journal of Dentistry, 2012:874359.

Abstract

Objectives. To investigate if reducing the light-curing time (while maintaining similar energy density) of resin-based surface sealants influences their erosion-preventive potential and mechanical stability after thermomechanical loading. Methods. Dentine samples were treated as follows: group 1-untreated, groups 2-4-Seal&Protect, groups 5-7-experimental sealer, and groups 8-10-Syntac Classic system. Groups 2, 5 and 8 were light-cured for 10 s (1000 mW/cm(2)), groups 3, 6 and 9 for 7 s (1400 mW/cm(2)), and groups 4, 7, and 10 for 3 s (3200 mW/cm(2)). After water storage (7 d), first measurement was performed to evaluate baseline permeability of the sealants. After a thermomechanical loading (5000 cycles, 50/5°C, 12000 brushing strokes) a second evaluation of permeability was conducted (measurement 2). Permeability was tested by storing the samples in HCl (pH 2.3; 24 h) and measuring the dentine calcium release by atomic absorption spectroscopy. Results. For the first and second measurements, no influence of light-exposure time on permeability was observed (ANOVA: P > 0.05). No significant difference in the stability of the respective sealants was observed when light-cured for different durations. Conclusion. Shortening the light-curing time, while maintaining energy density constant, has no influence on permeability and stability of the investigated sealants.

Abstract

Objectives. To investigate if reducing the light-curing time (while maintaining similar energy density) of resin-based surface sealants influences their erosion-preventive potential and mechanical stability after thermomechanical loading. Methods. Dentine samples were treated as follows: group 1-untreated, groups 2-4-Seal&Protect, groups 5-7-experimental sealer, and groups 8-10-Syntac Classic system. Groups 2, 5 and 8 were light-cured for 10 s (1000 mW/cm(2)), groups 3, 6 and 9 for 7 s (1400 mW/cm(2)), and groups 4, 7, and 10 for 3 s (3200 mW/cm(2)). After water storage (7 d), first measurement was performed to evaluate baseline permeability of the sealants. After a thermomechanical loading (5000 cycles, 50/5°C, 12000 brushing strokes) a second evaluation of permeability was conducted (measurement 2). Permeability was tested by storing the samples in HCl (pH 2.3; 24 h) and measuring the dentine calcium release by atomic absorption spectroscopy. Results. For the first and second measurements, no influence of light-exposure time on permeability was observed (ANOVA: P > 0.05). No significant difference in the stability of the respective sealants was observed when light-cured for different durations. Conclusion. Shortening the light-curing time, while maintaining energy density constant, has no influence on permeability and stability of the investigated sealants.

Statistics

Citations

Dimensions.ai Metrics

Altmetrics

Downloads

68 downloads since deposited on 27 Oct 2014
7 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic of Conservative and Preventive Dentistry
Dewey Decimal Classification:610 Medicine & health
Scopus Subject Areas:Health Sciences > General Dentistry
Language:English
Date:2012
Deposited On:27 Oct 2014 12:22
Last Modified:06 Oct 2022 12:38
Publisher:Hindawi Publishing Corporation
ISSN:1687-8728
OA Status:Gold
Free access at:PubMed ID. An embargo period may apply.
Publisher DOI:https://doi.org/10.1155/2012/874359
PubMed ID:22991513