Effect of tooth whitening on dental restorative materials
| Autor: | Alexandre Cavalheiro, Susana Marto, Ana Pequeno, Catarina Coito |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Branqueamento dentário
Materials science Restaurações dentárias Scanning electron microscope chemistry.chemical_element Dentistry Zinc Zinc oxide-eugenol cement engineering.material Dental restorations Tooth whitening chemistry.chemical_compound Silicone Composite resin Dental amalgam General Dentistry Cement business.industry Resina composta Amalgam (dentistry) chemistry Distilled water Cimento de óxido de zinco-eugenol Zinc oxide eugenol Amalgama dentária engineering Surgery business |
| Zdroj: | Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial. 53(2):71-76 |
| ISSN: | 1646-2890 |
| DOI: | 10.1016/j.rpemd.2012.01.003 |
| Popis: | Objective To evaluate the effects of tooth whitening with 10% carbamide peroxide on the surface ultramorphology of three dental restorative materials. Materials and methods Three materials were tested: (1) a reinforced zinc oxide-eugenol cement (IRM® Powder Zinc Oxide Eugenol, Dentsply, Konstanz, Germany), (2) a high copper amalgam with spherical particles (Ventura Finest®, Madespa SA, Toledo, Spain) and (3) a nanohybrid composite (EvoCeram Tetric®, Ivoclar Vivadent AG, Schaan, Liechtenstein). 6 specimens of each material (N = 18) were inserted into silicone molds with circular cavities of 10 mm × 2 mm. 3 specimens of each material were randomly assigned into the whitening or control groups. In the whitening group, the specimens were exposed to a 10% carbamide peroxide gel (Opalescence® PF 10%, Ultradent, South Jordan, UT, USA) for 14 consecutive days, 6 h per day. In the control group, the specimens were exposed to distilled water. After 14 days stored at 37 °C, all specimens were analyzed by scanning electron microscopy. Results The specimens exposed to carbamide peroxide revealed an irregular surface, with cracks and pores. Specimens from all control groups showed a smooth surface. Conclusion The 10% carbamide peroxide gel may cause changes in surface ultramorphology of the materials tested: reinforced zinc oxide-eugenol cement, amalgam and composite. |
| Databáze: | OpenAIRE |
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