[Tests on ionic release from glass-ionomer cements].
BACKGROUND
Dissolution process in oral liquids by the presence of glass-ionomer systems (due to surface corrosion, to diffusion through solutions and through mass) make an ionic release (particularly F, Al, Pb, As) which is a non secondary problem, due to the usual utilization of these materials in pedodontic and restorative dentistry.


METHODS
In this work, considering the high toxicity of low quantity of Arsenic ion, a comparative research has been made in order to determine, by using high level liquid Cromatography (HPCL), the quantity in ppm of As hydro- and acid soluble given by five ionomeric products, in water and in nitric acid concentrated solution.


CONCLUSIONS
The results show that in some products arsenical concentrations are higher then the quantity accepted by ISO-FDI; therefore, a better control in the production of these products is needed as well as a limited use in dentistry. It is suggested to use glass-ionomer systems in patients with dental dike and varnish on the surfaces that are in contact with oral liquids action.
Eramo
S
S
Cattedra di Clinica Odontoiatrica, Università degli Studi, Perugia.
Fraschini
M
M
Lomurno
G
G
Polimeni
A
A
D001672:Biocompatible Materials; D002851:Chromatography, High Pressure Liquid; D003738:Dental Cements / Q000494:pharmacology*; D005899:Glass Ionomer Cements / Q000494:pharmacology*; D006801:Humans; D017136:Ion Transport
D001672:Biocompatible Materials; D003738:Dental Cements; D005899:Glass Ionomer Cements