IN-VITRO PLAQUE-FORMATION ON SOME DENTAL FILLING MATERIALS

The purpose of this study was to investigate the effects of filling an d lining materials in various compositions on Streptococcus mutans. Fi ve glass-ionomer cements (Vitrebond, XR Ionomer, Ketac-Bond, Shofu Bas e Cement, Shofu Lining Cement) and two composite materials (Heliomolar -RO, Concise) were used in this study. Samples from these materials we re prepared in sterilized conditions and hung in tryptic soy broth med ium containing 5% sucrose. The media were inoculated with Streptococcu s mutans ATCC 13419. After 5 days, the plaque that had accumulated on the surfaces was scraped off and weighed in wet and dry conditions, Th en the colonies were counted and evaluated in comparison with each oth er. The least amount of plaque and colony numbers were found on Vitreb ond material disks, in conclusion, there were no differences among XR Ionomer, Heliomolar-RO and Ketac Bond. Concise gave better results tha n some materials containing fluoride; whereas the most abundant amount s of plaque were found on Shofu Lining Cement and Shofu Base Cement.