Cheng, Feng-ChouFeng-ChouChengCHEN-YING WANGCHUN-PIN CHIANG2024-01-232024-01-232023-1019917902https://scholars.lib.ntu.edu.tw/handle/123456789/638837enCounter-torque device; Fractured abutment screw; Screw retrieval instruments[SDGs]SDG3Removal of a fractured abutment screw within the implant body: A case reportjournal article10.1016/j.jds.2023.06.008377999142-s2.0-85171998082https://api.elsevier.com/content/abstract/scopus_id/85171998082