Naslov
Potentiometric determination of monofluorphosphate in dentifrice: a crtical discussion and a proposal for new improved procedures

Autori
Pavić, M. ; Carević, Darija ; Cimerman, Zvjezdana

Izvornik
Jurnal of Pharmaceutical and Biomedical analysis 20 (1999); 565-571

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
dentifrice; fluoride-electrode; potentiometric determination of monofluorophospate
(dentifrice; fluoride-electrode; potentiometric determination of)

Sažetak
It was shown that dentifrices containing fluoride ions can significantly to caries prevention (1,2). In the presence of F-, the hydroxylfluorapatite Ca10(PO4)6(OH)2-xFx, Wich is more resistant to acids than hydroxylapatite Ca10(PO4)6(OH)2 is sedimented on the tooth surface. As a result, the reconstitution of the tooth surface is much better and faster. The source of fluoride ions in dentifrices is sodium fluoride, tin fluoride, zinc fluoride, aminfluoride or-sodium monofluorphosphate. The latter componud is the one used most frequently. It contains covalently bonded fluorine and releases usually about 6% of fluoride inos during the application of dentifrice by hydrolysis in the mouth. Sodium monofluorphosphate is used in various dentifrices wichcontain Ca2+ and Mg 2+ insoluble salts as abrasives and the active fluoride ion can be lost as sparingly soluble CaF2 or MgF2. When NaF2 FPO3 is presents, the F- that disappeared is compensated by new F- ions delivered by continuous hydrolysis of NaF2 FPO3 by dentifrice application in the mouth.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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