Page 62 - My FlipBook

4f) THE TIGHTENING OF LOOSE TEETH

The front ai^pliance set, drill through the thin gold
lying upon the canine in the mouth.
The place where drilling is to be done is marked
in the impression for the back teeth.
In the side retaining appliance the centre of the
place where drilling is to be done is fitted with a
tongue or with a little thin gold-plate.
The side appliance also inserted, drill in the mouth
through the tongue over the canine, and connect both
appliances by a post.
If the bite be too much raised owing to too great
an elevation over the canine, cut off from the anterior
appliance over each canine a window, that, soldered to
the posterior appliance, forms a connection between
the anterior and posterior appliances.
The cut-out window remains in the impression
taken for the back teeth, and is soldered with these
appliances respectively to the bridge.
The post for connecting both appliances is best
driven in with the tapered upper end first ; thus it fits
tightly, disturbs the articulation as little as possible,
and offers no annoyance to the tongue (see Plate I.,
upper figure).
Such a post will also do excellent service in cases
where a badly broken down corner in a front tooth
has to be repaired without devitalizing the pulp.
Grind off the broken tooth a little with a carborun-
dum disc, sloping it to the labial wall ; drill through
it to the side, and take an impression.
Make up the broken tooth on the plaster model with