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Abutment screw withdrawal after conical abutment settlement: A pilot study
Authors:Kuang-Ta Yao  Tsai-Yu Chang  Hsu-Wei Fang  Chang-Hung Huang  Ding-Han Wang  Ming-Lun Hsu
Affiliation:1. School of Dentistry, National Yang-Ming University, Taipei, Taiwan;2. Department of Chemical Engineering and Biotechnology & Institute of Chemical Engineering, National Taipei University of Technology, Taipei, Taiwan

Division of Medical Engineering Research, National Health Research Institutes, Miaoli, Taiwan;3. Department of Medical Research, Mackay Memorial Hospital, New Taipei city, Taiwan

Abstract:
Keywords:abutment screw  conical  implant–abutment connection  index  screw loosening
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