The returned unit pymu303 (multi unit abutment) included unit pxmuas ( multi-unit abutment screw).The multi-unti abutment returned did not show any damage but the multi-unit abutment screw was stuck within the abutment due to biologic debris and plastic deformation.The evaluation revealed excessive force was applied during use.The multi-unit abutment are designed with internal threads and the multi-unit abutment screw was designed to screw into the unit.The screw appear to have been pushed into the abutment unit during placement instead of being screwed.The evaluation concluded excessive torque was applied.Therefore, the screw engagement allegation was a use error.
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