The Dental cosmos . rst molded on the lingualside of a cast of the lower incisors andcanines, the surface of the wax beingshaped to project upward and backwardin the form required for the inclinedplane. An impression w;1s then taken ofthe labial faces of the incisors and ca- VOL. XLIX.—27 nines, including the front and upper sur-face of the wax. From this impression adie and counter-die were made of fusiblemetal. A piece of gold plate was thenswaged to fit the parts forming the frontof the incline. The wax was then re-moved from the lingual side of the teeth,the plate of gold being held in pro
The Dental cosmos . rst molded on the lingualside of a cast of the lower incisors andcanines, the surface of the wax beingshaped to project upward and backwardin the form required for the inclinedplane. An impression w;1s then taken ofthe labial faces of the incisors and ca- VOL. XLIX.—27 nines, including the front and upper sur-face of the wax. From this impression adie and counter-die were made of fusiblemetal. A piece of gold plate was thenswaged to fit the parts forming the frontof the incline. The wax was then re-moved from the lingual side of the teeth,the plate of gold being held in proper po-sition while another impression of the lin-gual side of the teeth and the projectingplate metal was taken with mold inc. Thegoldwas then withdrawn, and the moldineimpression removed, after which a dieand counter-die were made, and a platemetal was swaged to fit the lingual side ofthe teeth, projecting upward to join thepiece of plate metal fitting the front ofthe teeth. The two pieces of plate were Fig. united with gold solder, and thus an in-clined plane and cap were formed. Thecap was then roughened on the inside,and cemented over the incisors and ca-nines with zinc oxyphosphate. The device was applied February on AIa\ 7th it was removed. Thenatural force of occlusion had correctedthe conditions, as shown in Fig. 2-). therehaving been no special discomfort ex-perienced by the patient. The teeth wereretained by the occlusion itself. Apparatus for opening the bite shouldnot be worn longer than necessary. Theopening of the bite in any manner beyondthe normal, if continued for a consider-able length of time, is likely to provedetrimental to the occlusion. In openingthe bite, the muscles are necessarily puton a. stretch, and the teeth resting incontact, gradually become depressed intheir sockets through the force of theocclusion, owing largely to the tonic con-traction of the muscles. 364 THE DENTAL COSMOS. THE EXTRACTION OF TEETH A SURGICAL PROCEDURE. By MO
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