A practical treatise on artificial crown- and bridge-work . e-plates, flowing upon them and the backing asmuch of the solder as may be necessary to give them the desiredthickness and rigidity; the amount admissible largely depend-ing upon the nature of the occlusion; a central thickness ofabout No. 21, standard gauge, being all that is really requisitefor strength, while the edges can be made much thinner. Fig. 480 represents the appliance without the pin. A is theporcelain tooth and backing; E, the base-plates; C and F, theopenings for the pins. Fig. 481 represents the appliance completed wit
A practical treatise on artificial crown- and bridge-work . e-plates, flowing upon them and the backing asmuch of the solder as may be necessary to give them the desiredthickness and rigidity; the amount admissible largely depend-ing upon the nature of the occlusion; a central thickness ofabout No. 21, standard gauge, being all that is really requisitefor strength, while the edges can be made much thinner. Fig. 480 represents the appliance without the pin. A is theporcelain tooth and backing; E, the base-plates; C and F, theopenings for the pins. Fig. 481 represents the appliance completed with the pins inposition. PARTIAL CAP AND PIN-BRIDOE METHODS. 239 Fig. 482 represents the natural teeth and interspace B, withopenings for retaining-pins, C, D. Fig. 483, ahcady described, represents the appearance pre-sented when the bridge is cemented in position. To Attach the Bridge.—To attach the bridge the best attaina-ble oxyphosphate cement should be used. It is desirable that itshould set slowly. Thoroughly dry the teeth and denture; mix Fto. the cement to as thick a consistence as is compatible with per-fect plasticity. A thick, viscid, semi-fluid mass is what isrequired. With suitable instruments, swiftly but carefully placethe cement around the head and shank of each platinum pin,and also in the openings in the natural teeth. This care isnecessary in order to exclude all air-bubbles and thoroughlyengage the pin-heads in the cement. They furnish ample
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectcrowns, bookyear1889
