Because of poor implant design with exceptionally long necks at the expense of shorter posts, the left neck of the cuspid implant snapped off from its base and it was decided to build up the right neck with a very hard acrylic for more support and better denture support, fig. 100. A blade-vent was inserted into the bone in the same area where the left neck broke off, figs. 101, 102, 103, and impressions of the three subperiosteal implant posts and the blade post was taken to fabricate a Dolder bar and coping structure to splint the isolated blade to the three remaining posts and give support to the new denture with the aid of internal clips, figs. 104, 105, 106, 107, 108A. The entire case is in for 12 years, the blade with new superstructure is in for seven years. Post-operative x-ray, fig. 108B.

261