A practical treatise on artificial crown- and bridge-work . ^ nuts on the screws (Fig. 379). When incisor or cuspid roots form theabutments. Dr. Winder first forms a capfor the end of the root, to which a tubeis attached extending up the root-canal asseen at A, in Fig. 380. On this cap ismounted the crown (B), the post of whichfits the tube tio;htly. To the crown soformed (Fig. 381) the bridge is joined inthe usual manner. In constructing a bridge of this style,the crowns forming the abutments havingfirst been made, are removed from the mouth in a plaster impression and articulation, from whic
A practical treatise on artificial crown- and bridge-work . ^ nuts on the screws (Fig. 379). When incisor or cuspid roots form theabutments. Dr. Winder first forms a capfor the end of the root, to which a tubeis attached extending up the root-canal asseen at A, in Fig. 380. On this cap ismounted the crown (B), the post of whichfits the tube tio;htly. To the crown soformed (Fig. 381) the bridge is joined inthe usual manner. In constructing a bridge of this style,the crowns forming the abutments havingfirst been made, are removed from the mouth in a plaster impression and articulation, from which a. DETACHABLE AND REMOVABLE BRIDOE-WORK. 191 model is made, showing tlie crowns in }»osition. Each sectionof the bridge between the crowns is then constructed, and thecrowns adjusted in the mouth. The bridges are next inserted inposition, and cemented with resin and wax to the detachablesections of the crowns. The whole is then remov^ed in iuvestino;material, in an impression-cup. or by placing the investing materialin position on the bridge. After being removed from the mouthmore investing material is added and the bridge and crownsections soldered together. Only the detachable sections of thecrowns should be in the investment at the time of soldering. The incisive edges can be protected and the occluding surfacesof the porcelain capped with gold as in permanently attachedbridge-work, or they can be formed of the porcelain, which latterlessens the labor of construction, as the bridge is easily detachedfrom the abutments for the purpose of repair. AVhen theoccluding surfaces of bicuspid
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectcrowns, bookyear1889
