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The data were evaluated by Fisher exact test and binomial test. Nine instruments were identified in DPR (37.5%) and none in the CBCT protocols (P.05). The type of instrument (stainless steel hand file or reciprocating instrument) did not influence the identification of the separated instrument (P.05). This study showed that DPR is the most accurate and sensitive imaging technique, with 83.3% and 37.5%, respectively. DPR is the better imaging diagnostic exam to evaluate the presence of separated endodontic instruments inside a