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UPPER PROTRUSTON. 763
being normal, but simply distorted, it must folloAv that such a case could
be restored without extracting any teeth, or in plainer language, that by
widening the jaw and reducing the forward prominence we may obtain a
normal mouth Avith all the teeth in proper position. The second class of
cases is where the length around the arch is increased, thus accounting for
Pointed arch. Protrusion with spaces. Protrusion— teeth too large.
Labial bow for three cases of protrusion.
the anterior prominence. In such a case the pressure would be supposed
to have moved the teeth forward, new tissue forming the Avhile. The
result would be a normal occlusion from the bicuspid region backward,
but a protrusion forward, with a distinct spacing between the teeth.
This of course M^ould be another condition which could be corrected
without the loss of a tooth."
Fig. 759.
Labial bow for reducing upper protrusion.
Treatment.—The treatment of upper protrusion will be considered
under four heads
A. Where there is a flattening of the sides of the arch (pointed arch).
B. Where there are spaces between the teeth.
C. Where a tooth must be sacrificed on each side to make room.
UPPER PROTRUSTON. 763
being normal, but simply distorted, it must folloAv that such a case could
be restored without extracting any teeth, or in plainer language, that by
widening the jaw and reducing the forward prominence we may obtain a
normal mouth Avith all the teeth in proper position. The second class of
cases is where the length around the arch is increased, thus accounting for
Pointed arch. Protrusion with spaces. Protrusion— teeth too large.
Labial bow for three cases of protrusion.
the anterior prominence. In such a case the pressure would be supposed
to have moved the teeth forward, new tissue forming the Avhile. The
result would be a normal occlusion from the bicuspid region backward,
but a protrusion forward, with a distinct spacing between the teeth.
This of course M^ould be another condition which could be corrected
without the loss of a tooth."
Fig. 759.
Labial bow for reducing upper protrusion.
Treatment.—The treatment of upper protrusion will be considered
under four heads
A. Where there is a flattening of the sides of the arch (pointed arch).
B. Where there are spaces between the teeth.
C. Where a tooth must be sacrificed on each side to make room.
