A practical treatise on artificial crown- and bridge-work . )resenting a cuspidor bicuspid. Figs. 343, 344, and 345 represent an extension bridge con- EXTENSION BRIDGES. 173 structed by Dr. H. A. Parr, of Xew York. The anterior aluit-ment consfsts of the six front teeth, which were all crowned andjoined together, the pulps being preserved in the incisors. Asaddle on each side forms the posterior abutments. A Spar Support consists of a flange formed at the end of anextension bridge, affording support by resting on the palatalwall of either an incisor or cuspid, or in the sulcus between thecusps
A practical treatise on artificial crown- and bridge-work . )resenting a cuspidor bicuspid. Figs. 343, 344, and 345 represent an extension bridge con- EXTENSION BRIDGES. 173 structed by Dr. H. A. Parr, of Xew York. The anterior aluit-ment consfsts of the six front teeth, which were all crowned andjoined together, the pulps being preserved in the incisors. Asaddle on each side forms the posterior abutments. A Spar Support consists of a flange formed at the end of anextension bridge, affording support by resting on the palatalwall of either an incisor or cuspid, or in the sulcus between thecusps of a bicuspid or molar. Fig. 346 illustrates a case with a Fig. 348. Fig.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectcrowns, bookyear1889
