. The principles and practice of dental surgery. TREATMENT OF IRREGULARITY OF THE TEETH. 15 encasing them and the alveohir ridge. An encasement of thissort (Fig. 64), possesses greater stability than can he obtainedfor an appliance like the one represented in Figs. 62 and 63. Fig. 64.. In Fig. 64, is seen arepresentation of an in-clined plane for bring-ing forward a centralincisor which had comeout about a quarter ofan inch behind the cir-cle of the other teeth.The manner of theaction of this instrumentupon the deviating toothis shown in Fig. 65. The plan proposedby Delabarre, as shown in Fig.

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. The principles and practice of dental surgery. TREATMENT OF IRREGULARITY OF THE TEETH. 15 encasing them and the alveohir ridge. An encasement of thissort (Fig. 64), possesses greater stability than can he obtainedfor an appliance like the one represented in Figs. 62 and 63. Fig. 64.. In Fig. 64, is seen arepresentation of an in-clined plane for bring-ing forward a centralincisor which had comeout about a quarter ofan inch behind the cir-cle of the other teeth.The manner of theaction of this instrumentupon the deviating toothis shown in Fig. 65. The plan proposedby Delabarre, as shown in Fig. t)6, taken from his treatise onsecond dentition, is to pass silk ligatures (a) around the teeth, in such a way that a properly directed and steady pressure willbe exerted on such of the teeth as are situated behind thearch. To keep the jaws from coming in contact, he recommendsthe application of a metallic grate (/>) fitted to two of the inferiormolars. This plan possesses the merit of simplicity, and occasions lit-tle or no inconvenience to the patient. It will, however, some-times be found not onh^ inefficient. Init also injurious in its actionupon the teeth adjacent to those to l)e brought forward. Theforce on the irregular teeth, and those against which the liga-tures ac