. Orthodontia, or malposition of the human teeth; its prevention and remedy . Vulcanite Plate with Screws. made to cover the roof ofthe mouth and capthe bicuspids andmolars; opposite thetooth or teeth to bemoved, the plate is al-lowed to come nearlydown to their cuttingedges. Directly oppo-site to the center ofeach of these teeth, ahole is drilled entirelythrough the rubberto receive a piece of screw wire long enough to pass throughand project a little beyond the i^late. In springing theplate into position the slightly projecting ends of thescrews will press yig. 75. against the teethand they
. Orthodontia, or malposition of the human teeth; its prevention and remedy . Vulcanite Plate with Screws. made to cover the roof ofthe mouth and capthe bicuspids andmolars; opposite thetooth or teeth to bemoved, the plate is al-lowed to come nearlydown to their cuttingedges. Directly oppo-site to the center ofeach of these teeth, ahole is drilled entirelythrough the rubberto receive a piece of screw wire long enough to pass throughand project a little beyond the i^late. In springing theplate into position the slightly projecting ends of thescrews will press yig. 75. against the teethand they will bemoved half turn of thescrews every daywill soon force theteeth into Dodge * sug-gests the employ-ment of a hollowmetal screw tippedwith gutta-percha at its exposed end Moving centrals Outward. (Matteson.) used in connection with a vulcanite plate, as just described, * Dental Cosmos, Vol. XXXI., i5. PRACTICAL TKEATMENt. 135 Fig. 76. claiming for it greater friction in contact with the tooth andnon-liability to injury of tooth substance. Less cumbersome than ruljber plates and more positiveand satisfactory in the majority of cases are appliances con-structed entirely of metal. Fig. 75 shows one of this character designed by Prof. Mat-teson,* somewhat on the Angle plan, for the purpose ofmoving forward two inlocked superior central incisors. Aswill be seen, it is firmly attached to the anchor teeth bycemented bands and is operated by turning the nuts wliichrest against tubes soldered to the anchor bands. Should the occlusion not permit the use of the appliancejust described, the same end may be attained by employinga fixture devised by Dr. Kirk f and illustrated in Fig. 76. It consists of a nar-row silver plateswaged to fit andpartly cover the roofof the mouth, towhich are attachedtwo broad clasps ofplatinized gold fit-ting the first the buccal sur-faces of these claspsar
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidorthodontiaormal00guil
