Original scientific paper

Microstructural Properties of Leucite-type Glass-ceramics for Dental Use

Svetozar Musić ; Ruder Bošković Institute, P. O. Box 1016, 10001 Zagreb, Croatia
Jasenka Živko-Babić ; Faculty of Dentistry, University of Zagreb, 10000 Zagreb, Croatia
Ketij Mehulić ; Faculty of Dentistry, University of Zagreb, 10000 Zagreb, Croatia
Mira Ristić ; Ruder Bošković Institute, P. O. Box 1016, 10001 Zagreb, Croatia
Stanko Popović ; Ruder Bošković Institute, P. O. Box 1016, 10001 Zagreb, Croatia
Krešimir Furić ; Ruder Bošković Institute, P. O. Box 1016, 10001 Zagreb, Croatia
Dunja Selinger-Kocijan ; INA-NAFTAPLIN, 10000 Zagreb, Croatia
Stojan Ćelap ; INA-NAFTAPLIN, 10000 Zagreb, Croatia
Tomislav Ivaniš ; Faculty of Dentistry, University of Zagreb, 10000 Zagreb, Croatia

Abstract

Microstructure of leucite-type dental glass-ceramics was investigated
using X-ray diffraction, Fourier transform infrared spectroscopy, laser
Raman spectroscopy, scanning electron microscopy and energy dispersive X-ray spectrometry. The main features of the FT-IR and laser Raman spectra were similar to those of silicate glasses containing Al3+ or other M3+(M = metal) as network forming ions. Two weak IR bands at 640 and 543 cm-1 were typical of all leucite glass-ceramics. These IR bands disappeared with the conversion of leucite glass-ceramics to the glass state. The laser Raman spectrum ofleucitetype glass exhibited one unusual band centred approximately at 4600 cm-I possessing the fluorescenceiluminescence spectral feature together with two luminescence sharp peaks at 5037 and 5007 cm-I. The effects of quenching (cooling) on the morphological and chemical properties of leucite-type dental glass-ceramics were monitored.

Keywords

Hrčak ID:

176968

URI

https://hrcak.srce.hr/176968

Publication date:

1.5.1997.

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