valuation of elemental composition of the different dental burs: An energy dispersive spectroscopy study

Objective: Recurrent caries is the one of the commonest reason for the failure of restoration. The microgap created at the tooth restoration interface lead to the formation of secondary caries. Cavity disinfection, chelation or fluoridation of the smear of the cavity did not prevent caries formation. Study Design: Five galvanic burs and sintered burs each are selected and cleaned with absolute alcohol. The elemental compositions of the burswere assessed by energy dispersive X-ray spectroscopy. Scanning electron microscope was used to examine the changes of the burs before and after preparation of tooth. Result: EDS of the galvanic burs (G) (Matrix) detected the presence of Nickel ions in the range of the 69.94 to 75.09 atomic%, carbon from 20.21 to 97.53 atomic % and oxygen from 1.38 to 6.31 atomic % in all the burs. The EDS of sintered burs (Matrix) copper ion concentration ranged from 27.58 to 46.21 atomic % with the mean concentration of 36.17±3.28 SD Conclusion: The copper ions and the nickel ions were the major constituents of the binder of the sintered and galvanic burs respectively