(b)(4).One certain performance temporary cylinder was returned for inspection with an abutment screw and restoration.The cylinder hex showed signs of wear, and no longer has distinct edges.The abutment screw shows significant signs of wear at the drive feature.No device lot number was provided so a device history record review and a complaint history review could not be performed.Appropriate documentation was reviewed and the following information was identified: documents reviewed: product catalog for restorative technologies instres rev e 04/16 information identified: preformance posts indications: single and multiple-unit cement-retained provisional restorations minimum interarch space of 7mm.Maximum angulation of 15° intraoral use limited to 180 days immediate non-occlusal loading of singe-unit provisional restorations multiple-unit restorations will require an evaluation of occlusal forces in lateral and protrusive excursions and masticatory forces to minimize the load on the provisional restorations guided soft-tissue healing of single and multiple-unit restorations of integrated implants.Complaint indicates the temporary post hex was damaged during torquing.The cylinder was functionally tested with a mating implant, and it was determined that the device would not seat in the drive feature.The alleged event was confirmed following inspection of the temporary post.A root cause for this complaint could not be determined.
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