. Orthodontia, or malposition of the human teeth; its prevention and remedy . n the centrals. Where the occlu-sion of the teethwould not contra-indicate its emplo)--ment, an outstanding-cuspid maybe drawninward by means of a screw operating between the tooth tobe moved and those used as anchorages. Fig. 86 represents a case of this character, where, in addi-tion to the firmness of the tooth, the j^atient resided at sucha distance from the dentist that a visit to him could be made only at intervals of tw^o orthree weeks. It was there-fore necessary to devise anappliance of such charac-ter that
. Orthodontia, or malposition of the human teeth; its prevention and remedy . n the centrals. Where the occlu-sion of the teethwould not contra-indicate its emplo)--ment, an outstanding-cuspid maybe drawninward by means of a screw operating between the tooth tobe moved and those used as anchorages. Fig. 86 represents a case of this character, where, in addi-tion to the firmness of the tooth, the j^atient resided at sucha distance from the dentist that a visit to him could be made only at intervals of tw^o orthree weeks. It was there-fore necessary to devise anappliance of such charac-ter that it could not beremoved or misplaced, andwith a sufficiency of powerthat might be regulatedby the patient appliance shown incut, consists of two plati-num bands made to fit theGold isux and Screw Drawing in Cuspid. misplaccd cuspid and Op-posite molar respectively, and cemented to these teeth. Tothe palatine surface of each of these bands was soldered agold ring, which served as point of attachment for the goldbox and screw, which operated between them. Fig: 146 ORTHODONTIA. Fig. 87. One end of the gold box was bushed and thread-cut toreceive the gold screw, which at the opposite end was bentinto the form of a hook to engage with the ring on the cus-pid band. The other end of the box was fitted with a smoothgold wire, with a head on one end to serve as a swivel,and a hook on the other to attach to the ring on the molarband. Turning the box with a wrench drew the screw in-ward, and with it the cuspid tooth. Using a single molarfor anchorage in the movement of a cuspid was scarcely in accord with correct prac-tice, but in this case therewas no alternative. Ind rawing the cuspid toplace the molar was alsomoved somewhat inwardand forward, but it soonresumed its former posi-tion after being relievedfrom duty. The corrected Completed Case with Retainiug Appliance, tootll WaS retained in place by having cemented to it the small band and bar appli-ance shown in position
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidorthodontiaormal00guil
