Biofilm Affecting the Mechanical Integrity of Implant-Abutment Joints

Dental implant-abutment connections are established on torque application resulting in high friction of the contacting surfaces. Plastic deformation and wear occur on the abutment screw threads and inner implant surfaces during tightening or occlusal loading. Abutment removal may be indicated during treatment, depending on clinical and esthetic needs. Wear and fatigue can significantly modify the inner implant surfaces, leading to microgap size changes and mechanical integrity loss.1

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