Page 33 - My FlipBook

MECHANICAL FIXATION 17

tooth to be drilled firmly towards the gold retainmg-
wall. The pin, when put through, is kept in place
by an assistant with pliers. Next, drill through the
opposite canine, again pass a pin through this,
the entire retaining appliance being thus fixed
for further drilling. To avoid any inexactitude in
the drilled canals, pass a fissure-burr through each
hole.
The six teeth drilled, take another impression, re-
moving in one impression both the retaining-wall

Fig. 1:5.

and pins. At the internal wall press the compound
over the retaining appliance, but at the external wall
only as far as the pins, and remove the impression
(Fig. 13).
In case the compound passes between the pins, re-
move it carefully, and press any displaced pins back
into the grooves that are visil^le in the compound.
The model shows the retaining appliance with six
2