At times, due to extreme resorption of the posterior edentulous areas of bone the inferior alveolar nerves and the mental bundles are totally exposed, fig. 23. With a round bur, the author has often created his own inferior alveolar canal and mental foramen, fig. 24, into which the inferior alveolar nerve and mental branch were placed into, fig. 25.

The same is repeated on the other side of the arch, figs. 26, 27, 28, 29. Anteriorly where there still remains sufficient bone a groove is made, fig. 30, to allow the bladevents, fig. 31, to be tapped properly into the bone, fig. 32. The tissues are then sutured closed, figs. 33, 34, and a snap-on removable denture is fabricated, supported by the anterior blades, fig. 35.

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