Implant Loss Secondary to overloading?
65 y/o presented with only one lower incisor which was periodontally involved and mobile. This remaining incisor was removed and two 3.0 Astra implants placed.
There was a a Class 2 defect associated with the extraction site. The defect was within the boney housing and was grafted with Sticky bone and covered with a
resorbable collagen membrane (Cytoplast). The membrane was stabilized with the temporary abutment screws. Primary closure was not attained, however the site was
covered with fibrin clots. 6 weeks later,patient presents with report of loose implant. He had been eating corn on the cob. Mobile implant removed. The sound implant also had a totally loose abutment screw. Noted huge Class 3 vertical defect. Grafted with Ti-Mesh, Sticky bone with Miner-Oss, multiple fibrin clots and primary closure. Failure considerations include failure to adequately torque abutment screws, failure to completely remove granualtion tissue, occlusal stress too soon, All 3. Thoughts and comments.