期刊
JOURNAL OF DENTAL RESEARCH
卷 91, 期 5, 页码 454-459出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/0022034512443068
关键词
Biodentine; glass-ionomer cement; interfaces; Raman; confocal microscopy; second harmonic generation
资金
- Septodont
- Department of Health via the National Institute for Health Research (NIHR) comprehensive Biomedical Research Centre
- Wellcome/EPSRC Medical Engineering Centre
- National Institute for Health Research [II-3A-1109-10046] Funding Source: researchfish
The interfacial properties of a new calcium-silicate-based coronal restorative material (Biodentine (TM)) and a glass-ionomer cement (GIC) with dentin have been studied by confocal laser scanning microscopy (CLSM), scanning electron microscopy (SEM), micro-Raman spectroscopy, and two-photon auto-fluorescence and second-harmonic-generation (SHG) imaging. Results indicate the formation of tag-like structures alongside an interfacial layer called the mineral infiltration zone, where the alkaline caustic effect of the calcium silicate cement's hydration products degrades the collagenous component of the interfacial dentin. This degradation leads to the formation of a porous structure which facilitates the permeation of high concentrations of Ca2+, OH-, and CO32- ions, leading to increased mineralization in this region. Comparison of the dentin-restorative interfaces shows that there is a dentin-mineral infiltration with the Biodentine, whereas polyacrylic and tartaric acids and their salts characterize the penetration of the GIC. A new type of interfacial interaction, the mineral infiltration zone, is suggested for these calcium-silicate-based cements.
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