Page 67 - My FlipBook

COLOURING TEETH 51

manner will never again insert them without giving
them the natural appearance thus obtainable.
As in making bridge-work the conspicuous appear-
ance of gold cannot be avoided, artificial teeth should
be given a less formal appearance by gold fillings.
By the use of my gold enamel a little corner or the
neck of an artificial tooth may be provided with a gold
filling of natural appearance.
Such gold fillings, especially when set on the necks
of the teeth, give extremely long teeth a very short
appearance.
When making retaining appliances, the small bent-
apart pins may be visible or show through. "When
artificial teeth are set between them, the smooth
surfaces of these may show plainly that they are
artificial. Drawing the pin in gold enamel provides
an efiicient imitation.
Artificially cast gold fillings may be produced as
follows :
The whole tooth having been coloured, except the
place which has to be filled with gold, lay on there, by
means of a camel's-hair brush, a trifling quantity of
gold enamel.
The enamel flows at about 900° C. At this the tooth
becomes red-hot and the gold enamel does not dis-
appear from the colour of the tooth.
The tooth being cool, and the filling burnished with
fine cuttlefish discs, lay on gold enamel again.
At last, polish with cuttlefish discs and agate
burnishers.