In this event a doctor reported that eight years after a restoration in a patient with zoe b&t, the material had not absorbed and had to be surgically removed.A patient had come to the dentist for an x-ray to ensure no damage happened after he hit his jaw.While reviewing the x-ray, the dentist noticed a dark spot, which he believed to be decay.The dentist stated that when he went to remove it, he found the zoe in pieces and it did not absorb.
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Zoe b&t is not resorbable material.Further review of the dentist's technique found that directions were not properly followed.While in might be argued that other factors may have contributed to the issue it is impossible to ascertain whether the failures were caused by the material alone or at all.Without additional supporting information we cannot conclude that there was a malfunction.Nevertheless, because intervention was required, this event meets the criteria for reportability per 21 cfr part 803.The device was not returned for evaluation and the lot number was not provided for retained-product testing and/or dhr review.
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