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or dry powder of the proper color. A surplus of paste should be placed
in the matrix, after which the moisture should be absorbed by dipping the
paste into the dry porcelain from the same bottle. It is then brushed
with a large brush (Fig. qSc). and carved to proper contour (Fig. 103).
If, after biscuiting, it is found that a sufficient quantity of foundation
has not been added, another layer should be applied and fired to a high
biscuit and it should then appear as in Fig. 104.

Fig. III.

.A.n enamel having the same hue of a color as the gingival third of
the tooth is now applied to that portion of the inlay. It should be built
almost flush with the margins of the matrix, but under no condition
should it be made fuller ; and no porcelain should be permitted to remain
on the surface of the matrix. This result can be obtained by carefully
brushing over the surface of the matrix toward the porcelain. After the
gingival section has been applied (Fig. 105) and biscuited (Fig. 106), the
middle section is built almost flush with the margin using the enamel hav-
ing the desired color (Fig. 107) and biscuited (Fig. 108). The incisal
third is now built to proper contour with an enamel that approaches the
color of this section of the tooth (Fig. 109). After this has been
biscuited, the inlay should appear as in Fig. no.
At this stage of the operation the inlay may be tried into the cavity to
ascertain whether it has the proper contour. It has been found that
the contour of an inlay may be obtained by the following system of
measurements: A delicate pair of calipers (Fig. in) is used to ob-
tain the distance from the axial wall of the cavity at the incisal edge to
the approximating tooth (Fig. 112). After recording this measurement,
the distance from the approximo-labio-gingival margin of the cavity
to the approximo-incisal angle of the approximating tooth is measured
and recorded (Fig. 113). While these measurements will assist the

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