Izvorni znanstveni članak
[The lining of cavities with phosphate cement]
T. Cvetković
; Stomatološka klinika Medicinskog fakulteta, Sarajevo
N. Bašić
; Stomatološka klinika Medicinskog fakulteta, Sarajevo
Sažetak
The aim of this work as to review the problem of cavity lining. It is a well known fact that cavities are lined in order to protect the dental pulp from chemical and thermic insults arising in various methods of cavity filling . It was our wish to investigate in the simplest possible manner the permeability for fluid of some phosphate cements which are used for the lining of cavities. This would be analoguos to an investigation as to how good these cements are as chemical isolators in lining cavities which are filled with silicate cements or selfbinding acrylics. The testing was carried out by simple experiments, i. e.: 1. On freshly extracted teeth lining of the prepared cavities was undertaken with phosphate cements of soft, moderately firm and firm consistency, trade mark Galenika , Harvard and Dental Fillings. The permeability of these cements was checked by absorption of the fluid stained with carbolfuchsin through the cement base in the dentin. 2. A certain quantity (about 2 drops) of blue ink was placed on the previously prepared blocks made of phosphate cements. The permeability of these materials was determ ined by means of the absorption of the blue ink into the very mass of the cements. These two experiments did not give identical rezults, exept for the moderately hard consistency of the » Racim « phosphate cement which in both cases was impermeable and no passage of Uained fluid took place. The » Harvard « phosphate cement proved equally good, that is very iittle passage of stained fluids (Figs. 5. a. and b .) was seen » Galenika's « phosphate cement showed great permeability of stained fluids, especially in the second experiment.Further research in this direction, and investigations by other authors will eventually give more complete and more precise results concering the quality of these phosphate cements.
Ključne riječi
Hrčak ID:
120025
URI
Datum izdavanja:
15.6.1970.
Posjeta: 2.813 *