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Device's lot was asked but unknown.Per the dentist, the reported device was given to one of (b)(6) employees at a conference; however, the dentist could not identify the employee.Evaluation is anticipated.Once the investigation is completed, a supplemental report will be submitted.
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The device was not returned to the manufacturer for investigation.A lot number was not provided, therefore a review of the device history record (dhr) could not be conducted.Although the root cause for failure to osseointegrate is inconclusive and specific to each case, probable could be due to insufficient bone or poor bone quality; either the bone was too soft or the operator erred in creating an osteotomy bigger than the size of the implant diameter.Premature loading can also be a factor.Per the reported information the patient has type iv bone quality.It has been shown that the quality and quantity of bone available at the implant site are very important patient factors in determining the success of dental implants.It is difficult to obtain implant anchorage in bone that is not very dense.Type iv bone quality is: very thin cortical bone with low density trabecular bone of poor strength.Therefore, the patient's bone quality may have been a factor in the failed osseointegration of the implant.A warning provided in the ifu states "absolute success cannot be guaranteed.Factors such as infection, disease, and inadequate bone quality and/or quantity can result in osseointegration failures following surgery or initial osseointegration.Precautions are provided in the ifu that state, minimizing tissue damage is crucial to successful implant osseointegration.In particular, care should be taken to eliminate sources of infection, contaminants, surgical and thermal trauma.Risk of osseointegration failure increases as tissue trauma increases.For best results, please observe the following precautions: · all drilling procedures should be performed at 2000 rpm or less under continual, copious irrigation.All surgical instruments must be in good condition and should be used carefully to avoid damage to implants or other components.Implants should be placed with sufficient stability; however, excessive insertion torque may result in implant fracture, or necrosis of the implant site.The proper surgical protocol should be strictly adhered to." this event will be tracked and trended.
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