Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	A multi technique study of a new lithium disilicate glass-ceramic spray-coated on ZrO2 substrate for dental restoration
Δημιουργός/Συγγραφέας:	Möncke D. Ehrt R. [EL] Παλλές, Δημήτρης[EN] Palles, Dimitris Efthimiopoulos I. [EL] Καμίτσος, Ευστράτιος Ι.[EN] Kamitsos, Efstratios I. Johannes M.
Εκδότης:	Walter de Gruyter GmbH
Ημερομηνία:	2017
Γλώσσα:	Αγγλικά
ISSN:	2299-3932
DOI:	10.1515/bglass-2017-0004
Περίληψη:	An alkali niobate-silicate veneer ceramic for ZrO2-based dental restoration was developed and characterized for its physical properties and structure. The properties were adjusted for dental applications. The new lithium disilicate glass-ceramic VBK (sold as cerafusion or LiSi) can easily be applied by spray coating to any individually formed ZrO2-matrix and needs only one final tempering treatment. The surface of the glass-ceramic is very smooth. The color of the already translucent glass-ceramic can be adjusted to that of individual natural teeth. The structure of the glass-ceramic was studied by XRD and Raman spectroscopy as a function of heat-treatment and of spatial variations within the material and at its interfaces. ToF SIMS, SEM and thermal analysis techniques were applied to investigate the crystallization behavior and surface-interface reactions. XRD and Raman spectroscopy identified different crystalline phases in the amorphous glass matrix including Li2Si2O5, Li2SiO3, NaxLi(1x)NbO3 and Na3NbO4. The Raman spectrum of the amorphous matrix is dominated by the vibrational activity of the highly polarizable niobate units with a prominent feature at 865 cm1, assigned to Nb-O stretching in NbO6 octahedra, which have non-bridging oxygen atoms and are connected to the silicate matrix rather than to other niobate polyhedra.
Τίτλος πηγής δημοσίευσης:	Biomedical Glasses
Τόμος/Κεφάλαιο:	3
Τεύχος:	1
Σελίδες:	41-55
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Φασματοσκοπία[EN] Spectroscopy
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2017 WDG. All rights reserved.
Όροι και προϋποθέσεις δικαιωμάτων:	All Open Access, Gold
Σημειώσεις:	Financial support from the German Bundesministerium für
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο