Page 171 - My FlipBook

CYLINDER OR BLOCK FILLING. 167

alone. There cannot be as much gold put in by
pellets as by blocks or cylinders well adjusted.
Adhesive Foil.—By this we understand that condi-
tion of gold foil in which the leaves unite readily and
firmly together. This property of cohesion is pos-
sessed, in the greatest degree, by properly manufac-
tured foil, immediately after annealing. Not that
annealing imparts any new property to the gold, but

it removes obstacles to the manifestation of a principle
possessed by all gold under favorable circumstances.
It is now about twelve years since this property was
first employed in gold foil for filling teeth. To Dr.
R. Arthur is due the credit of first directing the
attention of the profession to it. He not only did
this, but he entered most fully into the details of the
manipulations, instruments, etc., pertaining to this
mode of operation. Almost all recently prepared

gold foil possesses this property to a greater or less
degree ; there are methods of preparing it, however,
by which it possesses it most fully ; all recently
annealed foil is adhesive. If the foil is adhesive
when we wish to use it, nothing further is required
in the way of preparation. But if it is not adhesive
—as almost all foil is not, especially if it has been

exposed to the influence of the atmosphere—it will
require to be made so by some process : there are two.
either of which will perfectly accomplish the object,