Influence of modeling agents on the surface properties of an esthetic nano-hybrid composite
ObjectiveThe aim of this study was to evaluate the influence of different modeling agents on the surface microhardness (Vickers hardness number; VHN), roughness (Ra), and color change (ΔE) of a nano-hybrid composite with or without exposure to discoloration by coffee.Materials and MethodsSixty-four...
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Korean Academy of Conservative Dentistry
2020-05-01
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| Series: | Restorative Dentistry & Endodontics |
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| Online Access: | http://rde.ac/upload/pdf/rde-45-e13.pdf |
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| author | Zeynep Bilge Kutuk Ecem Erden Damla Lara Aksahin Zeynep Elif Durak Alp Can Dulda |
| author_facet | Zeynep Bilge Kutuk Ecem Erden Damla Lara Aksahin Zeynep Elif Durak Alp Can Dulda |
| author_sort | Zeynep Bilge Kutuk |
| collection | DOAJ |
| description | ObjectiveThe aim of this study was to evaluate the influence of different modeling agents on the surface microhardness (Vickers hardness number; VHN), roughness (Ra), and color change (ΔE) of a nano-hybrid composite with or without exposure to discoloration by coffee.Materials and MethodsSixty-four cylinder-shaped nano-hybrid composite specimens were prepared using a Teflon mold. The specimens' surfaces were prepared according to the following groups: group 1, no modeling agent; group 2, Modeling Liquid; group 3, a universal adhesive (G-Premio Bond); and group 4, the first step of a 2-step self-adhesive system (OptiBond XTR). Specimens were randomly allocated into 2 groups (n = 8) according to the storage medium (distilled water or coffee). VHN, Ra, and ΔE were measured at 24 hours, 1 week, and 6 weeks. The Kruskal-Wallis test followed by the Bonferroni correction for pairwise comparisons was used for statistical analysis (α = 0.05).ResultsStorage time did not influence the VHN of the nano-hybrid composite in any group (p > 0.05). OptiBond XTR Primer application affected the VHN negatively in all investigated storage medium and time conditions (p < 0.05). Modeling Liquid application yielded improved Ra values for the specimens stored in coffee at each time point (p < 0.05). Modeling Liquid application was associated with the lowest ΔE values in all investigated storage medium and time conditions (p < 0.05).ConclusionDifferent types of modeling agents could affect the surface properties and discoloration of nano-hybrid composites. |
| format | Article |
| id | doaj-art-5bee346105684dd19d5b02805d7d308d |
| institution | OA Journals |
| issn | 2234-7658 2234-7666 |
| language | English |
| publishDate | 2020-05-01 |
| publisher | Korean Academy of Conservative Dentistry |
| record_format | Article |
| series | Restorative Dentistry & Endodontics |
| spelling | doaj-art-5bee346105684dd19d5b02805d7d308d2025-08-20T02:38:30ZengKorean Academy of Conservative DentistryRestorative Dentistry & Endodontics2234-76582234-76662020-05-01452e1310.5395/rde.2020.45.e13894Influence of modeling agents on the surface properties of an esthetic nano-hybrid compositeZeynep Bilge Kutuk0Ecem Erden1Damla Lara Aksahin2Zeynep Elif Durak3Alp Can Dulda4Department of Restorative Dentistry, School of Dentistry, Hacettepe University, Ankara, TurkeyDepartment of Restorative Dentistry, School of Dentistry, Hacettepe University, Ankara, TurkeyDepartment of Restorative Dentistry, School of Dentistry, Hacettepe University, Ankara, TurkeyDepartment of Restorative Dentistry, School of Dentistry, Hacettepe University, Ankara, TurkeyDepartment of Restorative Dentistry, School of Dentistry, Hacettepe University, Ankara, TurkeyObjectiveThe aim of this study was to evaluate the influence of different modeling agents on the surface microhardness (Vickers hardness number; VHN), roughness (Ra), and color change (ΔE) of a nano-hybrid composite with or without exposure to discoloration by coffee.Materials and MethodsSixty-four cylinder-shaped nano-hybrid composite specimens were prepared using a Teflon mold. The specimens' surfaces were prepared according to the following groups: group 1, no modeling agent; group 2, Modeling Liquid; group 3, a universal adhesive (G-Premio Bond); and group 4, the first step of a 2-step self-adhesive system (OptiBond XTR). Specimens were randomly allocated into 2 groups (n = 8) according to the storage medium (distilled water or coffee). VHN, Ra, and ΔE were measured at 24 hours, 1 week, and 6 weeks. The Kruskal-Wallis test followed by the Bonferroni correction for pairwise comparisons was used for statistical analysis (α = 0.05).ResultsStorage time did not influence the VHN of the nano-hybrid composite in any group (p > 0.05). OptiBond XTR Primer application affected the VHN negatively in all investigated storage medium and time conditions (p < 0.05). Modeling Liquid application yielded improved Ra values for the specimens stored in coffee at each time point (p < 0.05). Modeling Liquid application was associated with the lowest ΔE values in all investigated storage medium and time conditions (p < 0.05).ConclusionDifferent types of modeling agents could affect the surface properties and discoloration of nano-hybrid composites.http://rde.ac/upload/pdf/rde-45-e13.pdfcolor changemicrohardnessmodeling agentsnano-hybrid compositesurface roughness |
| spellingShingle | Zeynep Bilge Kutuk Ecem Erden Damla Lara Aksahin Zeynep Elif Durak Alp Can Dulda Influence of modeling agents on the surface properties of an esthetic nano-hybrid composite Restorative Dentistry & Endodontics color change microhardness modeling agents nano-hybrid composite surface roughness |
| title | Influence of modeling agents on the surface properties of an esthetic nano-hybrid composite |
| title_full | Influence of modeling agents on the surface properties of an esthetic nano-hybrid composite |
| title_fullStr | Influence of modeling agents on the surface properties of an esthetic nano-hybrid composite |
| title_full_unstemmed | Influence of modeling agents on the surface properties of an esthetic nano-hybrid composite |
| title_short | Influence of modeling agents on the surface properties of an esthetic nano-hybrid composite |
| title_sort | influence of modeling agents on the surface properties of an esthetic nano hybrid composite |
| topic | color change microhardness modeling agents nano-hybrid composite surface roughness |
| url | http://rde.ac/upload/pdf/rde-45-e13.pdf |
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