Effects of polishing procedures on color stability of composite resins
The purpose of this study was to investigate the effect of different polishing methods on color stability of posterior, universal and nanohybrid composite resin restorative materials upon exposure to a staining agent. Twenty-five specimens were prepared for each of 5 different composite resins (Filt...
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| Format: | Article |
| Language: | English |
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University of São Paulo
2009-04-01
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| Series: | Journal of Applied Oral Science |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572009000200007 |
| _version_ | 1818352200022228992 |
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| author | Ahmet Umut Güler Eda Güler Ali Çağin Yücel Ertan Ertaş |
| author_facet | Ahmet Umut Güler Eda Güler Ali Çağin Yücel Ertan Ertaş |
| author_sort | Ahmet Umut Güler |
| collection | DOAJ |
| description | The purpose of this study was to investigate the effect of different polishing methods on color stability of posterior, universal and nanohybrid composite resin restorative materials upon exposure to a staining agent. Twenty-five specimens were prepared for each of 5 different composite resins (Filtek Z250, Filtek P60, Quadrant LC, Grandio and Filtek Supreme). Specimens were divided into 5 groups and different polishing procedures, including polishing discs (Pd), polishing discs then diamond polishing paste (PdP), polishing discs then a liquid polishing system (Biscover) (PdB), and combinations of these (PdPB) were used. Unpolished specimens served as the control (C). The specimens were stored for 48 h in a coffee solution. The color of all specimens was measured before and after exposure with a colorimeter, and total color change (DE*) were calculated. The data were analyzed with a two-way ANOVA and the means were compared by Tukey HSD test (a=0.05). The lowest color difference was observed in the groups PdP and C, while the highest color difference was observed in PdPB, and PdB. When comparing the five different restorative materials, no significant difference was observed between FiltekP60 and FiltekZ250, and these materials demonstrated significantly less color change than Quadrant LC and the nanohybrid materials (Grandio, Filtek Supreme). The posterior (Filtek P60) and universal (Filtek Z250) composite resin restorative materials, which do not contain tetraethyleneglycol dimethacrylate (TEGDMA), were found to be less stainable than the nanohybrid (Grandio, Filtek Supreme) and universal (Quadrant LC) composite resins, which contain TEGDMA. The use of diamond polishing paste after polishing with polishing discs significantly decreased staining when compared to the groups that used polishing discs alone, for all restorative materials tested. The highest color change values were obtained for the specimens that were polished with the Biscover liquid polish system (PdB and PdPB groups). |
| first_indexed | 2024-12-13T18:49:51Z |
| format | Article |
| id | doaj.art-1ec7ac5e276a49b281f463718672a93e |
| institution | Directory Open Access Journal |
| issn | 1678-7757 1678-7765 |
| language | English |
| last_indexed | 2024-12-13T18:49:51Z |
| publishDate | 2009-04-01 |
| publisher | University of São Paulo |
| record_format | Article |
| series | Journal of Applied Oral Science |
| spelling | doaj.art-1ec7ac5e276a49b281f463718672a93e2022-12-21T23:34:59ZengUniversity of São PauloJournal of Applied Oral Science1678-77571678-77652009-04-0117210811210.1590/S1678-77572009000200007Effects of polishing procedures on color stability of composite resinsAhmet Umut GülerEda GülerAli Çağin YücelErtan ErtaşThe purpose of this study was to investigate the effect of different polishing methods on color stability of posterior, universal and nanohybrid composite resin restorative materials upon exposure to a staining agent. Twenty-five specimens were prepared for each of 5 different composite resins (Filtek Z250, Filtek P60, Quadrant LC, Grandio and Filtek Supreme). Specimens were divided into 5 groups and different polishing procedures, including polishing discs (Pd), polishing discs then diamond polishing paste (PdP), polishing discs then a liquid polishing system (Biscover) (PdB), and combinations of these (PdPB) were used. Unpolished specimens served as the control (C). The specimens were stored for 48 h in a coffee solution. The color of all specimens was measured before and after exposure with a colorimeter, and total color change (DE*) were calculated. The data were analyzed with a two-way ANOVA and the means were compared by Tukey HSD test (a=0.05). The lowest color difference was observed in the groups PdP and C, while the highest color difference was observed in PdPB, and PdB. When comparing the five different restorative materials, no significant difference was observed between FiltekP60 and FiltekZ250, and these materials demonstrated significantly less color change than Quadrant LC and the nanohybrid materials (Grandio, Filtek Supreme). The posterior (Filtek P60) and universal (Filtek Z250) composite resin restorative materials, which do not contain tetraethyleneglycol dimethacrylate (TEGDMA), were found to be less stainable than the nanohybrid (Grandio, Filtek Supreme) and universal (Quadrant LC) composite resins, which contain TEGDMA. The use of diamond polishing paste after polishing with polishing discs significantly decreased staining when compared to the groups that used polishing discs alone, for all restorative materials tested. The highest color change values were obtained for the specimens that were polished with the Biscover liquid polish system (PdB and PdPB groups).http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572009000200007ColorComposite resinsPolishingStaining |
| spellingShingle | Ahmet Umut Güler Eda Güler Ali Çağin Yücel Ertan Ertaş Effects of polishing procedures on color stability of composite resins Journal of Applied Oral Science Color Composite resins Polishing Staining |
| title | Effects of polishing procedures on color stability of composite resins |
| title_full | Effects of polishing procedures on color stability of composite resins |
| title_fullStr | Effects of polishing procedures on color stability of composite resins |
| title_full_unstemmed | Effects of polishing procedures on color stability of composite resins |
| title_short | Effects of polishing procedures on color stability of composite resins |
| title_sort | effects of polishing procedures on color stability of composite resins |
| topic | Color Composite resins Polishing Staining |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572009000200007 |
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