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36 DENTAL ANATOMY

respectively (Fig. 43). In this way the denomination of the
tooth and the aspect presenting to view may be seen at a
glance. For the transverse sections the same plan is followed
in regard to the denomination of the tooth. Also label the
block in the upper or lower right-hand corner, depending on
whether the tooth is upper or lower, A, B, or C, thus indicating

whether it is the crown, mid-root or apical section; A repre-
senting the crown, B the mid-root, and C the apical portion
(Figs. 45, 46, 47).

Making Prints or Silhouettes

Object.—To further impress upon the student's mind
the size, location and shape of the pulp chamber and canals,
the outline form of the tooth and the relative thickness of
the enamel and dentin.
Directions.—The prints are made on ruled paper, as in

the illustration, Fig. 49, from the sections already made.
The face of the section must be perfectly smooth and the
enamel line and chamber and canal margins clearly cut, if
good prints are desired.
(a) Ink the surface of the section by bringing it in contact

with the ink pad. Avoid too much ink.
(b) Stamp the section firmly in contact with the note
paper, and hold steadily for a few moments to allow the ink
to take hold of the paper. In curved sections great care is
necessary to bring every portion of the section in contact

with the paper. Several thicknesses of the paper may be
held in the palm of the left hand while stamping with the
right hand; or laying the paper on a soft rubber pad of about
K inch in thickness and carefully rotating the section

longitudinally is a valuable procedure in these cases.
(c) Annotate the prints in the same manner as described
for the sections (Fig. 49).
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