The Dental cosmos . o assist the an-chorage and to prevent the appliancefrom being dislodged during mastication. The sides of the device were connectedby a palatal base-wire. A semicircularspring with two U-shaped loops was ar-ranged with the ends extending to the an-chorage portions. All of the parts wereunited with solder. The bite was opened on the opposite side of the arch. The bitebeing opened in this manner did not in-terfere with mastication, and permittedthe outward movement of the invalidingteeth when force was applied by means ofthe looped spring. The anterior part ofthe spring was r
The Dental cosmos . o assist the an-chorage and to prevent the appliancefrom being dislodged during mastication. The sides of the device were connectedby a palatal base-wire. A semicircularspring with two U-shaped loops was ar-ranged with the ends extending to the an-chorage portions. All of the parts wereunited with solder. The bite was opened on the opposite side of the arch. The bitebeing opened in this manner did not in-terfere with mastication, and permittedthe outward movement of the invalidingteeth when force was applied by means ofthe looped spring. The anterior part ofthe spring was retained by a lug on acollar cemented to the canine. The regu-lating was completed in a limited timeand with no special discomfort to the pa-tient. In Fig. 1*2 is seen the position ofthe teeth, and the partial upper and lower 350 THE DENTAL COSMOS. plates, which served for retaining theteeth and which filled the vacancies inplace. Fig. 13 illustrates the case of a patientthirteen years of age. The teeth were Fig. very large, and the cheek bones promi-nent. The upper arch was broad, and theincisors tipped inward. The lower archwas narrow, the molars on the left sideand the second molar on the right sideclosing entirely inside of the line of theupper ones. The incisors were extruded,antagonizing against the gum back of theupper incisors. As the patient lived incentral New York, and required eighthours time to reach my office, he couldtherefore make visits only at long inter-vals. The lower arch was first expanded lat-erally with an expanding device as shownin Fig. 14. The appliance was anchored Fig. 14.
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Keywords: ., bookauthor, bookcentury1900, bookdecade1900, booksubjectdentistry
