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One of the consequences of the development of dental implant therapy has been the appearance of multiple implant companies. 1 Aftermarket companies offer replacement components designed to match the original implant manufacturer. However, whether the use of nonoriginal components has consequences for the longevity of the prostheses is unclear. [2][3][4][5][6][7] Variations in the internal tolerances or design of the abutments can lead to modifications in the mechanical behavior of the restoration and can result in stress on the prosthetic screw, leading to screw loosening or screw failure. 3 Moreover, the cyclic loading could also affect the formation of microgaps at the implant-abutment interface, resulting in large differences in the overall contact areas. 8,9 Oral microbiome can proliferate in this microgap and affect peri-implant tissues, causing inflammation and peri-implant diseases. 10,11 The degree of bacterial penetration has been reported to be influenced by the applied force, micromovement, and precision fit at the implant-abutment interface. 12,13 However, clinical studies of original versus nonoriginal implant abutments are lacking, and information on long-term performance of "compatible" or "interchangeable" third-party abutments supporting cemented crowns is still scarce. 14 Therefore, the long-term success of these implantsupported restorations requires analysis of their in vitro mechanical fatigue lifetime, information that is much

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