Abstract

Digital radiographs are used frequently because of its various advantages like reduced radiation, quick image processing, improved image quality, but usage of same sensor leads to cross contamination. The aim of the current study is to evaluate microbial contamination on the surfaces of the digital radiographic equipment used in the Endodontics Department. Samples were collected randomly at the radiology unit over three consecutive days at two different times, in the morning – before attending patients, at the end of the day – after clinical attendance. Samples were collected from different surfaces of radiology unit such as tube head, control unit, activator switch, sensor, mouse and keyboard. The samples were cultured in different culture media and gram stained after incubation. The study results showed the presence of Staphylococci, Streptococci and other gram positive Bacilli species. The digital radiography increases the risk of cross contamination, there should be strict protocols to maintain the infection control by proper disinfection, using physical barriers.