Page 139 - My FlipBook

COHESIVE GOLD IN THE MAKING OF FILLINGS BY CLASSES 135

the height of the gingivo-axio-labial angle this should be thoroughly
filled and the filling continued, maintaining the same level of the
gold, restoring full contour past contact point which should be well
condensed and burnished.
Filling Incisal Angle. Shortly after passing contact point the
gold should be advanced along the axio-lingual angle to the incisal
angle which should then be filled using hand pressure alone as the
direction of the force will not permit of the use of the mallet. The
filling should then be completed with the plugger point still directed
toward the angle where gold was first condensed, the last portions
of gold being added to the labial portion of the filling at the incisal
extremity.
With Lingual Approach in Class Three the Avhole plan is re-
versed. The gold is first built into the gingivo-axio-labial angle.
The plugger point is maintained in a position pointing at this angle
as the filling progresses, till the last additions of gold are to the
lingual surface at the incisal extremity, all the while the operator is
working to the image reflected in the mouth mirror.
The Lingual Approach Is Advised in cases where ample prelim-
inary separation is secured or when the lingual wall is wanting and
the axial wall meets the lingual cavo-surface angle. That said about
the use of the mechanical mallet in Class Two applies to Class
Three with equal force.
Class Four. Proximal Cavities in Incisors and Cuspids Involving
the Angle.
The removal of the incisal angle permits of the plugger point be-
ing used in an ideal angle to the walls and allows the force being
applied more nearly from the direction that the subsequent force of
service is received.
Starting the Filling. These fillings are started as has just been
described with Class Three; however, the gingival wall should be
most rapidly covered and the plan of building similar to that de-
scribed for Class Two, keeping the surface of the gold parallel to
the plane of the gingival wall, restoring lost contour as the filling
advances, and maintaining the plugger point at about 12 degrees
centigrade to the surrounding walls.
The Final Portions of Gold should be condensed on the extreme
incisal angle with the shaft of the plugger point still maintained at
an angle of 12 degrees to the plane of the axial wall.
The Layers of Gold in Class Four should receive some attention
and what is said in this connection is true of all contour restora-