Effect of bleaching on surface roughness of two nanofilled and a microhybrid composite
Introduction: Regarding the importance of surface roughness of tooth structure and restorativematerials on plaque retention, this study was done to evaluate the effect of home and officebleaching agents on surface roughness of microhybrid and nanofilled composite resins.Materials and Methods: Point...
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| Format: | Article |
| Language: | fas |
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Isfahan University of Medical Sciences
2008-01-01
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| Series: | مجله دانشکده دندانپزشکی اصفهان |
| Subjects: | |
| Online Access: | http://jids.mui.ac.ir/index.php/jids/article/view/94 |
| Summary: | Introduction: Regarding the importance of surface roughness of tooth structure and restorativematerials on plaque retention, this study was done to evaluate the effect of home and officebleaching agents on surface roughness of microhybrid and nanofilled composite resins.Materials and Methods: Point 4 (kerr, USA) microhybride composite, Premise (Kerr, USA) andFiltek supreme (3M ESPE, USA) nanofilled composites, Opalescence PF (Ultradent, USA) as thehome bleaching agent and Opalescence Quisk (Ultradent, USA) as the office bleaching agent wereselected. One hundred and fifty samples were divided into 15 groups (n = 10). For each composite,five groups were defined as: control, two weeks home bleaching, 4 weeks home bleaching, one timeoffice bleaching and two times office bleaching with 2 weeks interval. The composites light curedunder clear matrix strip and polished with soflex TM (3M ESPE, USA) polishing disks systems.After bleaching with specific protocol, surface roughness of samples was measured withprofilometer (SM7 Profile Test, Italy). The data were analyzed with two-way ANOVA statisticaltest. Surface morphology of samples were analyzed with scanning electron microscopy; SEM(XL30, Philips, Netherlands).Results: There was no significant difference in surface roughness among all groups (p value >0.05). There were no difference between the surface morphology of control and experimentalgroups of each composite.Conclusion: The bleaching agents used in this study had no effects on surface roughness of twotypes of nanofilled composites and one type of microhybrid composite.Key words: Bleaching, Surface Raughness, Nano-filled composite, Micro-hybrid composites |
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| ISSN: | 1735-255X 2008-6989 |