Page 821 - My FlipBook

UPPER DENTAL AND 3TAXILLARY RETRVSIONS. 819

bicuspids have been removed preliminary to retruding the anterior teeth
to reduce the abnormal protrusion of the
Fig. 859.
loAver lip and esthetically deepen the
curve between the border of the lip
and the chin. The figure has the ap-
pearance of a perfect occlusion of all
the molars, whereas, on account of the
very' great narrowness of the upper jaw,
the buccal cusps of the second molars
only, occluded with the lingual cusps
of the lowers.
Fig. 860 shows palatal views of the
upper arch before and after treatment.
Fig. 861 is a view of teeth in natural
occlusion after treatment. The entire upper dental arch, especially at
the apical zone, was considerably enlarged. The " open bite " was par-
tially closed by grinding the molars and partly by extruding the teeth
anterior to the molars with small rubber bands extending from the
upper to the lower teeth. Fig. 862 is from a model of the face after
treatment.
As mentioned in section II., a depression of the central features
such as described is often mistaken for a prognathous jaw, and treated
accordiuijlv.
Fig. 860.

A slight retraction of the lower jaw will in nearly every case of this
character produce an improvement in the facial aspect, because the chin
and lower lip are brought into more perfect harmony with the depressed
central features. Such a eliange, however, when it is not demanded,
can never cause the beautifying eifect produced by forcing the depressed
facial features—in segments 1 and 2—forward, thus bringing into per-
fect harmony the entire jihysiognomy.
This can be verified with any profile view of a typical case—as Fig.