The current instructions for use (ifu) contains the following: "general risks to patients - a tooth that has been previously traumatized or significantly restored may be aggravated.In rare instances, the useful life of the tooth may be reduced, the tooth may require additional dental treatment such as endodontic and/or additional restorative work, and/or the tooth may be lost" and the "health of the bone and gums which support the teeth may be impaired or aggravated".After align's clinical review of the initial records, it is apparent that the patient had several periodontal issues and lack of periodontal support of ll7 prior to the use of the vivera retainers.It was noted that ll7 was the only molar present on lower left on initial records and had a poor prognosis prior to using the vivera retainers.No conclusive evidence has been provided that supports or opposes the fact that the vivera retainers caused or contributed to the reported symptom.This event is being filed as an mdr as the treating doctor reported that the patient had symptom of tooth extraction (serious injury) and the vivera retainers were being used.
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