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24 MECHANICAL DENTISTRY AND METALLURGY.

these wax contour models, and attached while in this posi-
tion to an articulator, and the regulating screw in the
articulator properly adjusted. By this means the plaster
casts will be placed and retained in the relative position of
the ja\\s. This result is shown in ['\g. lo with the wax
base plates and bite removed.
For Partial Cases.—When a large partial case is pre-
sented, the l)ase plate should be prepared to fit the cast; then
a small piece of softened wax should be adjusted in the

Fig. 9.

spaces that are to be supplied with teeth. This should be
placed in the mouth and the patient directed to bring the
teeth carefully together; if this has been correctly done,
the bite should be removed and replaced upon the plaster
cast. Then a wax or compound impression of the opposing
teeth should be taken, and from this a plaster cast secured
which articulates with the cast containing the base plate
and bite. The two casts should then be carefully secured
in the articulator.
IVJici'c only one or ti^'o tcctli arc missing in the same
locality, it is not necessary, as a rule, to take the bite in this
manner. All that is usually ref[uired is to secure a cast of
the opposing teeth, and an ()l)serving eye to note the peculiar-