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INFLUENCE OF THE TEETH ON THE PHYSIOGNOMY. 807

a short-bite occlusion, as soon as the upper incisors began to erupt they
became inlocked Avith the lower incisors. At this time the roots and
surrounding processes were in an immature condition. As the crowns
continued to erupt they slid down the posterior faces of the lower in-
cisors, where they were retained during the continued development of
the roots in the opposite direction, the force being sufficient to prevent
the natural growth and development of the entire intermaxillary process,
which normally would have carried them bodily forward to an harmo-

FiG. s-n.

(Before.) (After.)

nious position. As the other teeth came into place the lateral portions
of the jaw were allowed to normally develop in harmony with the natural
growth of the other parts. Thus the canines and bicuspids were found
in their proper relative positions as regards the lower.

Fm. S42. Fig. 843.

Force was applied with the contouring apparatus described in section
VI. of this chapter. In less than six months the incisors were carried
bodily forward in an upright position, together with the entire surround-
ing alveolar ridge and intermaxillary process (see Figs. 841 and 842),