Upon 3m follow-up with the patient's pediatric dentist who placed the stainless steel crown, a perforation of a stainless steel crown is not unusual, especially after almost three years, and could be caused by the masticatory function of the child or bruxism.However, it should be noted that 3m has not received any similar complaints of this nature in the past.This event involved two 3m products; therefore, two manufacturer reports are being submitted.This report represents the first product.Manufacturer report 3005174370-2017-00045 represents the second product.
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