Page 112 - My FlipBook

98 METHODS OF FILLING TEETH.

oxyphosphate. This done, I burnished a thin piece of tin over the
palatal portion of the filling, extending it partly around the approximal
surface, and over the cutting-edge, trimming it to shape. With this
as a I cut out asimilar from thin gold(24-k.) plate, and
pattern, piece
treated it in the same way, thus fashioning a tray which would hold the
material, and protect it wherever it was covered. This bit of gold
was then soldered where the two turned edges came together at the
angle of the corner, and a thin layer of solder flowed along the inner
side. Into it were then dropped stray bits of gold, or platinum, and
when heated up once more these were caught and held by the solder,
producing a roughened inner surface. The filling was then removed
entirely from the tooth. Its first insertion was intended only to serve
for molding the gold tray. The gold tray was then held in place
against the corner of the tooth, and fresh oxyphosphate inserted.
When this was hardened the whole was finished with sand-paper disks,
and presented the appearance, from the palatal aspect, of any ordi-

FIG. 87. FIG. 88. FIG. 89. FIG. 90.

while I had the oxyphosphate simulating
nary gold filling, labially
the tooth in color. In Fig. 87 is shown a tooth prepared for filling,
the gold tray in position to receive the phosphate. Fig. 88 shows the
tray itself, and the inner surface here represented with loops. One or
two pins from old porcelain teeth, soldered into the tray, serve as well
as any other means of obtaining a point for the phosphate to adhere
against.
Another condition where extensive contours may be safely effected
mainly with oxyphosphate, is where a large portion of a tooth being
let us
missing, suppose that we find the" tooth itself intensely sensitive,
so that we should hesitate to insert a metallic filling. Or the patient
may be of such temperament that it would be hazardous or injudicious
to compel as long a sitting as would be necessary for the insertion of
gold. It may be desirable to reject amalgam, because the location is
such that it would show, as for example the anterior approximal sur-
face of a superior first molar, or one of the bicuspids. The plan that
I have followed with success is to restore the of the
temporarily shape
tooth by inserting an oxyphosphate filling. Next I take an impression
and dismiss the patient. During his absence I mold pure gold plate