ABSTRACT:
This study aims to show the effect of glucoamylase and glucose oxidase from the Aspergillus niger and Penicillium notatumrespectively on inhibition of Streptococcus mutans causes the dental caries . The result of this study recorded theStreptococcus mutans growth was inhibited in the using the first and the second concentration of glucoamylase and glucose oxidase (0.09,0.009 and 0.3,0.03 µl) respectively , while the growth was appered in third concentration of enzymes ( 0.0009 , 0.003 µl ) respectively ,the NaF , ZnF2 , C 12H 7 Cl 3 FNaO2 , NaCl , NaHCO3 and KSCN with (0.5 and 1M ) leads to increase the enzymes activity, while Na3PO4 , SrCl2 , Fe2O3 and Ca(HCO3) 2 caused decreased the activity of enzymes when treated with (0.5 and1 M) from these solutions , the glucoamylase activity also decreased when it treated with ( 0.5 and 1M) from KNO3 solution but this solution increased the activity of glucose oxidase when it treated with (0.5 and 1 M) from this solution .