Page 818 - My FlipBook

816 THE DEVELOPMENT OF ESTHETIC FACIAL CONTOURS.

The facial imperfection which consists principally in a prominence
or bulging along the higher portions of the upper lip and in the region
of the na.sal alie is often quite pronounced. When this is caused partly
by the canine roots the difficulties are much increased in the case of
patients older than thirteen. The fact that the roots of the canines are
surrounded by the most dense i)ortion of the alveolar process, and their
movement bodily in a posterior direction requiring the resorption of a
large portion of bone, makes this operation one of the most difficult in
dental orthopedia.
Fig. 855 is from the models of a patient over twenty years of age,
Fk;. 855.

and will serve to illustrate a case before and after treatment of abnormal
protrusion of the roots of the upper anterior teeth, alveolar process and
maxillae—the axis of the incisors being inclined lingually.
It will be observed that the canines have been moved bodily in a
posterior direction notwithstanding the advanced age of the patient.
If regulating appliances are properly constructed that will permit
the production of an independent static fulcrum at the occlusal ends of
the teeth, so that the entire power of the machine may be directed and
maintained upon the roots (see Figs. 896 and 897, in section VI.) per-
fect contrusion of the prominence will slowly but surely result.