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Effects of two fretting damage modes on dental implant-abutment interface and the generation of metal wear debris: an in vitro study
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  • Jing Gao,
  • Jie Min,
  • Xin Chen,
  • Ping Yu,
  • Xin Tan,
  • Qianqian Zhang,
  • Haiyang Yu
Jing Gao
Sichuan University West China Hospital of Stomatology
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Jie Min
Sichuan University West China Hospital of Stomatology
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Xin Chen
Sichuan University West China College of Stomatology
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Ping Yu
Sichuan University West China College of Stomatology
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Xin Tan
Sichuan University West China College of Stomatology
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Qianqian Zhang
Sichuan University West China College of Stomatology
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Haiyang Yu
Sichuan University West China Hospital of Stomatology
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Peer review status:UNDER REVIEW

12 Jun 2020Submitted to Fatigue & Fracture of Engineering Materials & Structures
12 Jun 2020Assigned to Editor
12 Jun 2020Submission Checks Completed
14 Jun 2020Reviewer(s) Assigned

Abstract

The fretting damage and wear debris on the dental implant-abutment interface (IAI) are unclear. In this study, fatigue cycle loading (FT) and chewing cycle loading (CW) test were applied to two implant systems, the fretting damage morphology and wear debris generation on the IAI were observed by a scanning electron microscope. The torque value of the central screw was measured by electronic torque tester. The fretting damage on the IAI was relatively slight and mainly plastic deformation in the FT group, which was more serious and mainly furrow wear in the CW group. Various forms of wear debris were generated. The removal torques were lower than its pre-tightening value in both groups, the decline and loss rate of the CW group was significantly higher. This study confirmed the critical roles of fretting damages and metal wear debris on the IAI in the implant-supported prosthesis.