Study on the concetration of sodium,potassium and sodium-potassium ra tio in saliva of normal people

Objective To determine the concentrat io n of sodium,potassium and sodium-potassium ratio in saliva of normal people,and to detect the affection of sex and age.Methods The concentration of sodium and potassium in sali va of 121 normal people was examined by using Ion Specific Electrode(ISE). Results The saliva flow rate was highly significantly dec reased of peple aged 41 more years (P 0.01).The concentration of potass ium was elevated (P 0.05) and pH highly significantly decreased (P 0.01) of people aged 51 more years.The concentration of sodium was slightl y elevated with age increasing and the sodium-potassium ratio was slightly decre ased of people aged 51 more years,but the differences were not statistically sig nificant.Compared with female,the concentration of potassium was slightly increa sed and pH was slightly decreased in male aged 31 more years.Sodium-potassium ra tio and concentration of sodium were somewhat higher in female than in male aged 41 more years.However,no significant differences could be shown between sex.Conclusion The saliva flow rate,the concentration of pota ssium and pH were obviously affected by age.To determine saliva sodium and potas sium can be widely used in clinical differential diagnosis.