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t'«?r9S»>^ •:'-.-
96 MECHANICAL DENTISTRY AND METALLURGY.
color, size, and form of the latter will serve as a guide in
the choice of teeth appropriate for the opposite jaw. In
fitting and arranging the teeth upon the base, and in an-
tagonizing them with the opposing natural teeth, the same
general principles apply as those just described in connec-
tion with full upper and lower dentures.
Having adjusted the teeth to the base, they should be
placed in the mouth before uniting them permanently to the
plate, to detect and remedy any error of arrangement either
in respect to prominence, position, inclination, length, or
articulation.
Manner of Forming a Rim to a Plate.—If the case is
one where single gum or block teeth are employed, and it
is intended to form a socket or groove upon the borders of
the plate for the reception of the plate extremities of the
teeth, the rim forming the groove should be fitted and sol-
dered to the base before investing the piece in plaster. If
the alveolar ridge above is shallow, and but imperfectly
'
concealed by the lip, a rim to the plate will be inadmissible
lest when the mouth is opened and the lip retracted, as in
laughing, the metallic band will be exposed to view.
A rim may be fitted and attached to the base in the fol-
lowing manner An impression in plaster is first taken of
:
the gum surfaces of the teeth and exposed border of the
plate; but as it will be impossible to detach the plaster in
perfect condition when encircling the entire arch, or to
swage perfectly with a die so unfavorably formed for
stamping, separate impressions of the two lateral halves
of the piece should be taken from these plaster models,
and from the latter, dies and counter-dies; with these, two
strips of plate of sufficient width are swaged, each extend-
ing from the heel of the plate to a little beyond the median
line in front, overlapping slightly at the latter point. The
portions of the swaged strips embracing the plate ends of
t'«?r9S»>^ •:'-.-
96 MECHANICAL DENTISTRY AND METALLURGY.
color, size, and form of the latter will serve as a guide in
the choice of teeth appropriate for the opposite jaw. In
fitting and arranging the teeth upon the base, and in an-
tagonizing them with the opposing natural teeth, the same
general principles apply as those just described in connec-
tion with full upper and lower dentures.
Having adjusted the teeth to the base, they should be
placed in the mouth before uniting them permanently to the
plate, to detect and remedy any error of arrangement either
in respect to prominence, position, inclination, length, or
articulation.
Manner of Forming a Rim to a Plate.—If the case is
one where single gum or block teeth are employed, and it
is intended to form a socket or groove upon the borders of
the plate for the reception of the plate extremities of the
teeth, the rim forming the groove should be fitted and sol-
dered to the base before investing the piece in plaster. If
the alveolar ridge above is shallow, and but imperfectly
'
concealed by the lip, a rim to the plate will be inadmissible
lest when the mouth is opened and the lip retracted, as in
laughing, the metallic band will be exposed to view.
A rim may be fitted and attached to the base in the fol-
lowing manner An impression in plaster is first taken of
:
the gum surfaces of the teeth and exposed border of the
plate; but as it will be impossible to detach the plaster in
perfect condition when encircling the entire arch, or to
swage perfectly with a die so unfavorably formed for
stamping, separate impressions of the two lateral halves
of the piece should be taken from these plaster models,
and from the latter, dies and counter-dies; with these, two
strips of plate of sufficient width are swaged, each extend-
ing from the heel of the plate to a little beyond the median
line in front, overlapping slightly at the latter point. The
portions of the swaged strips embracing the plate ends of
