(b)(6) 2016 integra investigation completed.Failure analysis, device history evaluation.Failure analysis - elevator returned in used condition, not showing any unusual markings and a broken tip.Without knowing how much pressure was used and what angle of the elevator to the tooth during leveling, excess force applied to the tips of the instrument may have led to the tips breaking.This type of damage is typically the result of improper usage.The damage to the elevator is not identified as a workmanship or material deficiency.The complaint report is confirmed.Device history evaluation: nonconforming product report / nonconforming material report history: none variance authorization / deviation history: none engineering change order/manufacturing change order history: there is no applicable engineering change order/manufacturing change order history.Corrective action preventive action history: none health hazard evaluation history: none the root cause has not been identified as a workmanship or material deficiency.
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