Comparison of wet weight total CFU, S mutans and PH changes of plaque collected from composite fillings and natural teeth

In this in-vivo study carried out in the Department of Operative Dentistry, Nishtar Medical College, Multan, plaque from two different types of the composite fillings and that from natural teeth was compared by cultivation of CFU and S. mutans and pH measurements. It was observed that CFU per milligram of plaque from different sources varied. S. mutans was cultivated from plaque of Heliosit and natural teeth. pH drop was seen in plaque collected on Hospital. Despite the presence of S. mutans in plaque of natural teeth a rise in pH was observed