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BARRETO, M.S. et al. 2016. Efficacy of ultrasonic activation of NaOCl and orange oil in removing filling material from mesial canals of mandibular molars with and without isthmus .
Journal of Applied Oral Science. 24, 1 (Feb. 2016), 37–44
. DOI:https://doi.org/10.1590/1678-775720150090.