A-7 ポルトランドセメント配合レジンの石灰化誘導能(陶材・生体用セラミックス・模型材,一般講演(口頭発表))

概要

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This study evaluated the chemical or structural changes of the Portland cement containing cured resin composites after long-term water storage. Resin disks were examined by morphological and chemical analysis. Various types of crystal growth were observed on the disk surfaces with SEM after a few days. For Raman analysis, the peaks corresponding to resins and cements were not observed for the crystals. The X-ray diffraction showed crystals deposited on the resin matrix had similar chemical structure of cement. The XPS analysis showed that Ca-rich layer was formed on the specimen surfaces after water storage. Such crystal formation may be accelerated in saliva, compared to distilled water. The restorative compounds used to fill voids by remineralization may protect materials-tooth interface for long-term clinical use.
2010-03-25