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Zimmerbiomet complaint number (b)(4).The reported device was returned for investigation.Visual inspection of the returned product identified worn markings due to usage and what had the appearance of bone, however no damage identified.Functional testing to recreate the reported event could not be performed due to the nature of the device and event.The returned device was measured and verified to match dhr drawing specifications.The customer is a smoker and clenche the teeth.The reported device was located attooth #29 and was used for approximately 2 months.Pictures or x-ray images were not provided.A device history record (dhr)review was performed and no related deviations or nonconformances were noted.Also, a complaint history search was performed using our complaint handling system and there were no related complaints for this product lot.Sterilization record was reviewed and verified to have passed all sterilization activities with no issues or nonconformities identified.Bone loss: a summary investigation has been completed for bone loss events recognizing that a definitive root cause cannot be identified due to a wide range of external factors (non-design or manufacturing related), including medical conditions (e.G., diabetes, poor bone quality, etc.) / patient habits (e.G., smoking) and surgical technique.Previously completed investigations for bone loss have not identified any signals indicating potential non-conformances affecting the manufacturing and sterilization processes.Furthermore, the probability of manufacturing or design defects that might lead to bone loss and escaping the available detections has been assessed and found remote and almost nonexistent.Should additional information be received which indicates that the device may have caused or contributed to the event, an additional report will be submitted.Complainant reported that the implant was removed due to infection and allergic reaction.The reported complaint could not be verified.A definitive root cause for this complaint could not be determined.The following sections have been updated: h3: device evaluated by manufacturer: change ¿no' to 'yes' h6: evaluation codes h10: additional narrative.
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