The dead bone having been removed, the lining granulations are scraped
away with a spoon, and the cavity is disinfected.
There are different ways of dealing with a _bone cavity_. It may be
packed with gauze (impregnated with "bipp" or with iodoform), which is
changed at intervals until healing takes place from the bottom; it may
be filled with a flap of bone and periosteum raised from the vicinity,
or with bone grafts; or the wall of bone on one side of the cavity may
be chiselled through at its base, so that it can be brought into contact
with the opposite wall. The method of filling bone cavities devised by
Mosetig-Moorhof, consists in disinfecting and drying the cavity by a
current of hot air, and filling it with a mixture of powdered iodoform
(60 parts) and oil of sesame and spermaceti (each 40 parts), which is
fluid at a temperature of 112 F.; the soft parts are then brought
together without drainage. As the cavity fills up with new bone the
iodoform is gradually absorbed. Iodoform gives a dark shadow with the
X-rays, so that the process of its absorption can be followed in
skiagrams taken at intervals.
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