thin and weak portion of the substructure framework in the areas of both mental foramina, fig. 274. Being that the mental bundles were so far over the ridge the buccal peripheral struts had to blend in with the lingual strut thus creating two weak areas, figs. 275, 276. Three weeks after the first surgical stage, the implant was placed over the bone, figs. 277, 278, and sutures were placed beneath the horizontal bar, fig. 279. A temporary acrylic denture was fabricated, fig. 280. Healing was uneventful, fig. 281. The implant denture included a metal superstructure with internal clips, fig. 282, seen on next page. The completed case, figs. 283, 284, 285, 286.

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