Side effects of a non-peroxide-based home bleaching agent on dental enamel

• Published in: Journal of Biomedical Materials Research Part B Vol. 88A; no. 1; pp. 195 - 204
• Main Authors: Wang, Xiaojie, Mihailova, Boriana, Klocke, Arndt, Fittschen, Ursula E. A., Heidrich, Stefanie, Hill, Mathias, Stosch, Rainer, Güttler, Bernd, Broekaert, José A. C., Bismayer, Ulrich
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.01.2009
• Subjects: ATR-IR and Raman spectroscopy; bleaching; Ca leaching; Calcium; Citric Acid; dental enamel; Dental Enamel - drug effects; Dental Enamel - pathology; Gels; Home Care Services; Humans; Phosphorus; Spectrum Analysis; Tooth Bleaching - adverse effects; Tooth Bleaching - methods; Tooth Demineralization - chemically induced
• ISSN: 1549-3296; 1552-4965; 1552-4981
• DOI: 10.1002/jbm.a.31843

Changes in the chemistry and structure of enamel due to a non‐peroxide‐based home bleaching product (Rapid White) were studied in vitro using attenuated total reflectance‐infrared spectroscopy, Raman spectroscopy, electron probe microanalysis, flame atomic absorption spectroscopy, and total reflection X‐ray fluorescence. The results revealed that the citric‐acid‐containing gel‐like component of the bleaching system substantially impacts on the dental hard tissue. Enamel is affected on several levels: (i) the organic component is removed from superficial and deeper enamel layers and remnants of the bleaching gel are embedded in the emptied voids; (ii) cracks and chemical inhomogeneities with respect to Ca and P occur on the surface; and (iii) within a submicron layer of enamel, the CaO bond strength in apatite decreases, thus enhancing calcium leakage from the bleached enamel hard tissue. © 2008 Wiley Periodicals, Inc. J Biomed Mater Res, 2009