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- Title
CO 2 Laser Improves 45S5 Bioglass Interaction with Dentin.
- Authors
Bakry, A.S.; Takahashi, H.; Otsuki, M.; Sadr, A.; Yamashita, K.; Tagami, J.
- Abstract
Bioglass 45S5 is a bioactive glass that can create a layer of calcium-phosphate crystals on mineralized hard tissues. In this study, 45S5 bioglass was mixed with phosphoric acid and irradiated with CO2 laser and examined as a possible aid in the treatment of dentin hypersensitivity. The dentinal surface modified by the aforementioned technique was chemically and micro-morphologically examined with a field emission scanning electron microscope (FE-SEM) equipped with an energy-dispersive x-ray spectroscope (EDS), and the crystalline structures of the examined dentinal surfaces were examined by x-ray diffraction (XRD). Moreover, the mechanical properties of the newly formed layer were examined by nanoindentation. The results showed that 45S5 bioglass could occlude the dentinal tubule orifices with calcium-phosphate crystals. The application of CO2 laser potentially improved the mechanical organization of these crystals.
- Subjects
CARBON dioxide lasers; DENTIN; BIOACTIVE compounds; GLASS; CALCIUM phosphate; CRYSTALS; PHOSPHORIC acid; FIELD emission; SCANNING electron microscopes; X-ray spectroscopy; X-ray diffraction; INDENTATION (Materials science)
- Publication
Journal of Dental Research, 2011, Vol 90, Issue 2, p246
- ISSN
0022-0345
- Publication type
Article
- DOI
10.1177/0022034510387793