Journal
JOURNAL OF DENTAL RESEARCH
Volume 90, Issue 2, Pages 246-250Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/0022034510387793
Keywords
45S5 bioglass; CO2 laser; bioactive glass
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Funding
- Japan Society for the Promotion of Sciences [21.09146]
- TMDU
- Grants-in-Aid for Scientific Research [23300178] Funding Source: KAKEN
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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 CO 2 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.
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