The device was not returned.However a non-visual investigation has been completed and the results are as follows: dhr results: no dhr was available for review.The device was fabricated per physician's prescription only.Stock product reviewed results: no stock product was available for review since the device was fabricated per physician's prescription only.Investigation methods/results: the device was not returned for investigation.Root cause: the root cause cannot be explicitly determined.Customer did not return the device for investigation.Customer provided very limited information for this complaint.Ifu-012544 rev 1.0 (ema instruction for use) states in precaution "do not clean soak in water, ammonia, mouthwash, bleach, peroxide and denture cleaner".Ifu-012544 rev 1.0 also states in cleaning procedure "brush the device carefully with a soft toothbrush and use only clear cool water to rinse the device.Do not use soap to clean the appliance".However, the customer did not provide the information regarding how the patient was instructed to handle and maintain the device.Per ifu-0125444 rev 1.0, it contains the following statement in warning section."dentists should consider the medical history of the patients, including allergic reactions, history of asthma, breathing, or respiratory disorders, or other relevant health problems, and refer the patient to the appropriate healthcare provider before prescribing the device.Irritation of the mouth, tongue, and lips may occur.Regular dental follow-ups are recommended to review any side effects to avoid device breakage, allergic reaction, irritation, or discomfort.".
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