Comparative Evaluation of Dentinal Caries in Restored Cavity Prepared By Galvanic and Sintered Burs

BACKGROUND: The occurrence of secondary caries is the most common reason for the restorations failures. AIM: The aim of the study was to evaluate and compare the anticaries effect of copper ions on the teeth restored with glass ionomer cement (GIC) and composite restorations in the cavity prepared by galvanic and sintered burs. MATERIALS AND METHODS: A total of 40 premolars were divided into two halves buccolingually. Class V cavity was prepared with sintered diamond burs and galvanic diamond bur. Cavities were restored with either GIC or composite resin. The monospecies artificial microbial caries model was selected for induction of secondary caries. The lesions were measured at junction of restoration by confocal laser scanning microscope. RESULTS: The results were statistically significant (P < 0.001) and suggested that the width of lesion was lowest in cavity prepared by sintered bur and restored with composite resin. CONCLUSION: The use of different burs in combination with various restorative materials influence the occurrence and width of caries lesion.