Page 70 - My FlipBook
P. 70
54 THE TIGHTENING OF LOOSE TEETH
To avoid air-bubbles, coax the plaster over the
surfaces of the impression with a brush.
As to a casting apparatus, I have constructed
parallel casting-pliers* (Fig. 33) which are to be pre-
ferred to Solbrig"s, the parallel pressure being more
equal and reliable than lateral.
Fig. 33.
Slight pressure is sufficient to force the molten
gold into the mould. Hence the plaster model shows
neither fissures nor any deformity.
The pliers stand firmly, and may be heated in a
short time.
* The pliers will be found described in the Deutslie Dental
Geselhhaff.
