Butakhieo, W.; Olanaramkul, A.; Phintong, P.; Puasiri, S.; Thaweesit, P. A SEM Study of The Root Canal Filling Remnant and Patency between Bioceramic Sealer Group and Epoxy-Resin Sealer Group after Removing by Using Ni-Ti Rotary with Eucalyptus Oil and GuttaClear®. Khon Kaen Dent J 2023, 26, 1-16.