A practical treatise on artificial crown- and bridge-work . Buch a manner that the plate will be perfectly struck up withthe least possible risk of being cracked. The flattened hub isseen in Fig. 195, which also shows at D the obverse of the struck-up huh. and at El the cameo of the struck-up plate, having everycusp and depression of 6* sharply defined. The counter-die plate ALL-GOLD COLLAR CROWNS CONSTRUCTED IN SECTIONS. 101 (Fig. 192) is made of a very hard cast metal, which will admit ofthe striking up of many crown plates by the means described,if the crown plates be not too thick and stif
A practical treatise on artificial crown- and bridge-work . Buch a manner that the plate will be perfectly struck up withthe least possible risk of being cracked. The flattened hub isseen in Fig. 195, which also shows at D the obverse of the struck-up huh. and at El the cameo of the struck-up plate, having everycusp and depression of 6* sharply defined. The counter-die plate ALL-GOLD COLLAR CROWNS CONSTRUCTED IN SECTIONS. 101 (Fig. 192) is made of a very hard cast metal, which will admit ofthe striking up of many crown plates by the means described,if the crown plates be not too thick and stiff. Of course theyshould be annealed before they are placed over the die. r-l i *-1 r ^1 L<,
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherphila, bookyear1889
