[Calcium ion-selective miroelectrodes for measurement of free calcium in saliva]

In this paper, the free calcium concentration in saliva was measured and evaluated by the neutral carries ion-selective microelectrodes.The statistical results showed that there was no significant difference (the groups of all,P>0.05) between children and adult,between male children and female one,between caries-free and caries-active,and between interval of two weeks.The results suggested that caries might be no direct relation to the calcium concentration in children physiological saliva. Calcium ion-selective microelectrodes seems to be a good method for measuring free calcium in oral micro-sample fluid.