Introduction. Minimal attention has been given to the role of salivary microelements, the importance they have in reducing the\nintensity of caries, and the effect of caries prophylaxes. Aim. This research aimed to determine the concentration and quantity of\nZn and its impact on the prevention and the reduction of the intensity of caries in schoolchildren aged 12-13 years with permanent\ndentition. Methods. For this research, we analyzed the stimulated and nonstimulated full saliva of 106 schoolchildren divided into\nthree groups by mean decayed, missing, and filled teeth (DMFT) index. The control group consisted of 25 caries-free children, the\nsecond group had 47 children with mean DMFT index of 1 to 6, and the third group had 34 children with DMFT index of � 6.\nComplete saliva was collected from all children in a sterile test tube. Results. The concentration of Zn in saliva before\nstimulation in caries-free children has variations of the order of 0.001+ to 0.01 mmol/l. The maximum concentration after\nstimulation is 6.72 mmol/l, while the maximum value is 64.38 mmol/l. Conclusion. The Zn concentration in the stimulated\nsaliva showed a significant increase in the group of caries-free children and could be described as a positive value for the\nreduction of caries.
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