Page 114 - My FlipBook

110 THE TECHNICAL PROCEDURES IN FILLING TEETH.

I Special Holding Instrument.
I Weston's Plugging Assistant.
I Automatic Plugger.
Starting cohesive gold fillings.—In treating this subject
I will suppose that the cavity has been prepared as has been
directed in the article on cavity preparation, and that the con-
venience points have been arranged for the beginning of the
filling. Begin the filling in the most convenient angle
of the cavity. In occlusal cavities this will usually be at some
point along the pulpo-distal angle. In proximate cavities it will
usually be the linguo-axio-gingival angle. In buccal cavities it
will usually be the axio-disto-gingival angle. In labial cavities it
may be either the axio-gingivo-mesial or the axio-gingivo-distal
angle, etc.
Select a plugger point that will easily go into all parts
of the convenience point with which to condense the first
piece of gold, and have the holding instrument or the assistant
plugger ready in the left hand. Select a piece of gold rope,
cylinder or block, that seems rather large for the conven-
ience point, and see to it carefully that it is well annealed.
Convey it to the point with the annealing instrument and catch
it with the assistant plugger ; hold it so while the annealing
instrument is exchanged for the plugger selected, and with the
two bunch the gold carefully into the angle and catch it with the
assistant plugger in such a way that the condensing instrument
will have free access to the convenience point. Now, condense
the gold into the angle by a few quick blows of the mallet,
beginning in the central portion, and drawing the outlying
parts of the gold into the angle with the subsequent blows. If
the convenience point has been correctly formed this first piece
will seldom need to be held afterward, but sometimes a second
and a third piece should be added while still holding the gold
with the assistant plugger. In case the operator is using a hand
mallet with his own hand this first condensation must be done
by hand pressure. The first piece of gold should always
be sufficient in quantity so that the plugger point will
not come in contact with the dentin. The plugger point
should never punch through the gold. Remember that if the
bottom of your convenience point is round, as made with a
round bur, this first piece of gold will roll, but if the bottom is