Page 56 - My FlipBook

40 THE TIGHTENING OF LOOSE TEETH
forated articulating-})aper on the root, and pressing
the pivot into the opening where the margin of the
plate will be marked.
Sometimes shortening of the pivot within the tooth
to be inserted may be required, or deepening of the
opening in the artificial tooth in which the pivot is
to be introduced.
This may be done by means of carborundum
(Butler's points) dipped in oil of turpentine.

Fig. 29.
If the tube of a detached crown tooth be ever badly
weakened by having been ground, and breaking be
imminent, the part in question should be covered
with Jenkins's prosthetic as far as the bite may
permit.
In case the whole tooth is ground off too thin, put
platinum wire round, countersink it a little in the
tooth, invest and cover with prosthetic ; or swage the
pure gold-plate backing of the artificial tooth beyond
the cutting edge, put prosthetic compound on the
artificial tooth, stick the pure gold wall on it, and fire