THE CONTENT OF MINERAL COMPONENTS OF ORAL LIQUID IN CHILDREN WITH CARIES OF FISSURES

Abstract

It is known that the large number of chemical elements take part in the process of mineralization of the tooth enamel and ensuring its caries resistance, but among them the main element is fluoride, calcium, phosphorus, which are in oral liquid. The lack of content of these elements in the body, in particular oral liquid, significantly affects the re-sistance of enamel and its resistance to caries. Aim of research. To analyze the content of the calcium, phosphorus, magnesium and alkaline phosphatase activity in the oral liquid in children with initial stage of the tooth caries. Material and Methods. The 162 children (6-9 years), who were divided into two groups were under observation. The first group contained the 64 children with intact fissures and the second group contained the 98 children with fis-sure caries of the first permanent molars. The concentration of total calcium, inorganic phosphorus, magnesium and alkaline phosphatase in saliva were determined photometrically with using the biochemical analyzer «HumaStar 300", using standard sets firm «HUMAN» (Germany). Results. Biochemical indices of oral liquid were analyzed depending on the affection of the first permanent molars with fissure caries. It was found that in the oral liquid of the children with intact fissures of the first permanent molars the total calcium content was on average 1,12±2,27 mmol / l. In children with fissure caries the increase of total calci-um content was observed (P> 0.05). In the first group magnesium content in oral liquid was on average 0,3±0,08 mmol / l, in the children of the second group this value was significantly lower (0,08±0,02 mmol / l, p <0,05). The analyze of the content of inorganic phosphorus in the oral liquid revealed that its level was on average 5,4±1,43 mmol / l in children with intact fissures. It was observed the decrease of amount of inorganic phosphorus in oral liquid (p> 0.05) in children with diagnosed fissure caries. In children with intact fissures of the permanent molars the activity of alkaline phosphatase is on average 5,9±1,45 units / l and somewhat reduced in the second group of children – 5,3±1,57 units / l (p>0.05 ). The results of the research of mineral components in oral liquid in children with caries of fissures are shown. The minor difference of the biochemical parameters of the oral liquid were found in children with fissure caries. It was es-tablished that the content of total calcium of the oral liquid increases in group of children with affected fissures of the first permanent molars. The level of magnesium and inorganic phosphorus, however, is somewhat reduced. The slight decline of alkaline phosphatase of the oral liquid was found in children with fissure caries of the first permanent molars.