Fretting damage at the dental implant–abutment interface (IAI) is a critical factor of dental implant failure, and it has been investigated using fatigue cycle (FC) loading tests. For the first time, we applied chewing cycle (CC) loading onto the IAI to simulate masticatory movements. It was found that more serious furrow wear was induced by the sliding forces present under CC loading. Furthermore, four types of metal wear debris and a markedly higher torque loss rate were observed after undergoing both cyclic loadings. Such debris can aggravate the resulting fretting damage, and an increased amount of large‐grain wear debris was generated under CC loading. Therefore, CC loading can be an effective approach for exploring the fretting damage at the IAI to improve implant‐supported prostheses.

中文翻译：

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两种微动损伤模式对种植体-基台界面和金属磨损碎片产生的影响：一项体外研究

牙种植体-基台界面（IAI）的微动损伤是造成牙种植体失效的关键因素，已使用疲劳循环（FC）载荷测试对其进行了研究。第一次，我们将咀嚼周期（CC）加载到IAI上以模拟咀嚼运动。发现在CC负载下存在的滑动力会引起更严重的沟槽磨损。此外，在经历了两种循环载荷后，观察到四种类型的金属磨损碎片和明显更高的扭矩损失率。这些碎屑会加剧所产生的微动磨损，在CC负载下会产生大量的大颗粒磨损碎屑。因此，CC加载可能是探索IAI的微动损伤以改善植入物支撑假体的有效方法。