Examination of Native and Carbamide Peroxide-bleached Human Tooth Enamel by Atomic Force Microscopy
| Autor: | Markus Kastner, Peter Hinterdorfer, Ljubomir Vitkov, Kurt Schilcher, Christoph Mahringer, Matthias Hannig, Monika Fureder, Ferry Kienberger, Andreas Ebner |
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| Rok vydání: | 2009 |
| Předmět: |
genetic structures
Surface Properties Dentistry Carbamide Peroxide Matrix (biology) Microscopy Atomic Force Pathology and Forensic Medicine stomatognathic system Structural Biology Human tooth Tooth Bleaching medicine Surface roughness Humans Urea Dental Enamel Enamel paint business.industry Chemistry Atomic force microscopy Tooth enamel Peroxides Drug Combinations stomatognathic diseases medicine.anatomical_structure visual_art visual_art.visual_art_medium sense organs Carbamide peroxide business Junction depth Nuclear chemistry |
| Zdroj: | Ultrastructural Pathology. 33:189-196 |
| ISSN: | 1521-0758 0191-3123 |
| DOI: | 10.3109/01913120903275634 |
| Popis: | Atomic force microscopy (AFM) was used to study the effects of bleaching on the morphology of the enamel surface with nanoscale resolution. Samples of human tooth enamel with native (pumiced) or fine-polished surfaces were examined before and after bleaching with 30% carbamide peroxide. The obtained profilometric AFM data revealed significant morphological surface alterations. After 1 h of bleaching, the surface roughness increased significantly from 19 +/- 4nm to 33 +/- 5 nm. Six-hour bleaching did not produce any significant further increase in enamel surface roughness. The interrod junction depth raised more than twice after 1 h of bleaching. After 6 h of bleaching, a further and significant increase in interrod junction depth was recorded. This alteration might be a consequence of oxidation and a subsequent partial lysis of the tooth enamel matrix proteins. |
| Databáze: | OpenAIRE |
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