than a partial full arch splint in a totally edentulous mandible. If for some reason the subperiosteal did not fit the three blades were still inserted. The fit, however, was exact, fig. 49. Grooves were then made symmetrically to one another and to the subperiosteal implant, fig. 50, and the blades were inserted, figs. 51, 52, and the tissues closed, fig. 53. Healing again shows to be excellent even with the Vitallium subperiosteal implant and the titanium bladevents, fig. 54. Because of vertical bone loss anteriorly the finished restoration contained a pink gingival portion which ended at the gingival portion of the blades and did not overlap the soft tissues, figs. 55, 56, 57. The post-operative x-ray, fig. 58.

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