Evaluation of the slumping property of dental composites during modeling
Background/purpose: The aim of this study was to investigate the slumping resistance during modeling of four light-initiated composite materials before their polymerization. Materials and methods: Filtek Supreme XT (3M-ESPE, Seefeld, Germany), Enamel Plus HFO (GDF, Germany), Tetric EvoCeram (Vivaden...
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doaj-67459388a3944fbe98f7eac3ba4ce8412020-11-25T00:36:23ZengElsevierJournal of Dental Sciences1991-79022012-12-017433033510.1016/j.jds.2012.04.002Evaluation of the slumping property of dental composites during modelingTong-Mei Wang0Ming-Shu Lee1Alena Knezevic2Zrinka Tarle3Yu-Chih Chiang4Karl-Heinz Kunzelmann5School of Dentistry and Graduate Institute of Clinical Dentistry, National Taiwan University and National Taiwan University Hospital, Taipei, TaiwanDepartment of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, CroatiaDepartment of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, CroatiaDepartment of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, CroatiaSchool of Dentistry and Graduate Institute of Clinical Dentistry, National Taiwan University and National Taiwan University Hospital, Taipei, TaiwanDepartment of Restorative Dentistry and Periodontology, Dental School of the Ludwig-Maximilians University, Munich, GermanyBackground/purpose: The aim of this study was to investigate the slumping resistance during modeling of four light-initiated composite materials before their polymerization. Materials and methods: Filtek Supreme XT (3M-ESPE, Seefeld, Germany), Enamel Plus HFO (GDF, Germany), Tetric EvoCeram (Vivadent, Liechtenstein), and Synergy D6 (Coltene, Whaledent AG, Switzerland) were used to measure the shape deformation (i.e., slumping). Three different molar shapes of composites were obtained from customized silicon molds. The surface of each sample was digitized with a 3D laser scanner (400 slices, with a lateral resolution of 25 μm) every minute up to the first 4 minutes. The 3D datasets at each point in time were numerically superimposed with matching software. Differences in deformation were calculated relative to the baseline measurement. Results: We found the lowest surface change for Synergy D6 with tooth molds 1 and 2 (21–37 μm) and Tetric EvoCeram with tooth mold 3 (29–37 μm). Enamel Plus HFO had the largest surface change of all tooth molds and all observed time intervals. Significant differences (P < 0.05) in material type factors were determined among all tested composites. Synergy D6 and Tetric EvoCeram presented no significant differences with tooth mold 1. Conclusion: With this method, the handling characteristic of different composite materials can be identified. Results of this study can quantify slumping differences and help select materials for their intended use.http://www.sciencedirect.com/science/article/pii/S1991790212001675composite materialshandling characteristicsrheologic propertyslumping |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tong-Mei Wang Ming-Shu Lee Alena Knezevic Zrinka Tarle Yu-Chih Chiang Karl-Heinz Kunzelmann |
spellingShingle |
Tong-Mei Wang Ming-Shu Lee Alena Knezevic Zrinka Tarle Yu-Chih Chiang Karl-Heinz Kunzelmann Evaluation of the slumping property of dental composites during modeling Journal of Dental Sciences composite materials handling characteristics rheologic property slumping |
author_facet |
Tong-Mei Wang Ming-Shu Lee Alena Knezevic Zrinka Tarle Yu-Chih Chiang Karl-Heinz Kunzelmann |
author_sort |
Tong-Mei Wang |
title |
Evaluation of the slumping property of dental composites during modeling |
title_short |
Evaluation of the slumping property of dental composites during modeling |
title_full |
Evaluation of the slumping property of dental composites during modeling |
title_fullStr |
Evaluation of the slumping property of dental composites during modeling |
title_full_unstemmed |
Evaluation of the slumping property of dental composites during modeling |
title_sort |
evaluation of the slumping property of dental composites during modeling |
publisher |
Elsevier |
series |
Journal of Dental Sciences |
issn |
1991-7902 |
publishDate |
2012-12-01 |
description |
Background/purpose: The aim of this study was to investigate the slumping resistance during modeling of four light-initiated composite materials before their polymerization.
Materials and methods: Filtek Supreme XT (3M-ESPE, Seefeld, Germany), Enamel Plus HFO (GDF, Germany), Tetric EvoCeram (Vivadent, Liechtenstein), and Synergy D6 (Coltene, Whaledent AG, Switzerland) were used to measure the shape deformation (i.e., slumping). Three different molar shapes of composites were obtained from customized silicon molds. The surface of each sample was digitized with a 3D laser scanner (400 slices, with a lateral resolution of 25 μm) every minute up to the first 4 minutes. The 3D datasets at each point in time were numerically superimposed with matching software. Differences in deformation were calculated relative to the baseline measurement.
Results: We found the lowest surface change for Synergy D6 with tooth molds 1 and 2 (21–37 μm) and Tetric EvoCeram with tooth mold 3 (29–37 μm). Enamel Plus HFO had the largest surface change of all tooth molds and all observed time intervals. Significant differences (P < 0.05) in material type factors were determined among all tested composites. Synergy D6 and Tetric EvoCeram presented no significant differences with tooth mold 1.
Conclusion: With this method, the handling characteristic of different composite materials can be identified. Results of this study can quantify slumping differences and help select materials for their intended use. |
topic |
composite materials handling characteristics rheologic property slumping |
url |
http://www.sciencedirect.com/science/article/pii/S1991790212001675 |
work_keys_str_mv |
AT tongmeiwang evaluationoftheslumpingpropertyofdentalcompositesduringmodeling AT mingshulee evaluationoftheslumpingpropertyofdentalcompositesduringmodeling AT alenaknezevic evaluationoftheslumpingpropertyofdentalcompositesduringmodeling AT zrinkatarle evaluationoftheslumpingpropertyofdentalcompositesduringmodeling AT yuchihchiang evaluationoftheslumpingpropertyofdentalcompositesduringmodeling AT karlheinzkunzelmann evaluationoftheslumpingpropertyofdentalcompositesduringmodeling |
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